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Alafia River POTA: How 12 Meters Delivered 72% DX While Everyone Else Fought on 20m
Everyone defaults to 20 meters for POTA. It's crowded, competitive, and honestly…boring at this point. So at Alafia River State Park (US-1829), I did something different: I skipped 20 meters entirely and focused on 12 and 15 meters instead. The result? A 72% DX rate on 12 meters, contacts to 10 different countries in under an hour, and some of the best propagation I've experienced from a Florida state park. All at 10 watts.
Everyone defaults to 20 meters for POTA. It's crowded, competitive, and honestly…boring at this point. So at Alafia River State Park (US-1829), I did something different: I skipped 20 meters entirely and focused on 12 and 15 meters instead. The result? A 72% DX rate on 12 meters, contacts to 10 different countries in under an hour, and some of the best propagation I've experienced from a Florida state park. All at 10 watts.
Let me show you why 12 meters is the band everyone's ignoring while they pile up on 20m.
Why I Skipped 20 Meters Entirely
Look, I get it. 20 meters is the default POTA band. It's where everyone goes, it's where the hunters expect you to be, and it's reliable. But reliable also means crowded, and crowded means QRM, pile-ups, and fighting for frequency space with a dozen other activators doing the same thing.
We're near solar cycle maximum right now, which means the higher bands (10m, 12m, and 15m) are performing like 20m used to during previous cycles. But most POTA activators haven't adapted their band strategy yet. They're still automatically going to 14.061 MHz CW or 20m SSB without even checking what's happening higher up in frequency.
So today at Alafia River State Park with Chas (who was also activating), I made a conscious decision: skip 20 meters completely. Start with 12 meters, see what happens, then move to 15 meters. If those bands produced nothing, I could always drop to 20m as a backup. But I had a feeling 12m was going to surprise me.
Spoiler: it absolutely did.
The Alafia River State Park Setup
Alafia River State Park is designated US-1829 for POTA and it's located in Lithia, Florida, just southeast of Tampa. The park has a really nice covered pavilion with picnic tables, bathrooms, and RV camping area with good tree coverage. Spanish moss everywhere, typical Florida scrub vegetation, and plenty of tall trees for wire antennas.
The covered pavilion where we set up for the activation. Clean facilities, picnic tables, and good tree coverage for wire antennas.
Chas and I both set up under the pavilion, him at one table, me at another about 20 feet away. This gave us enough separation to avoid too much RF interference between our stations, though we still had to coordinate who was transmitting when to avoid stepping on each other.
My antenna setup was a 65 foot random wire thrown up into one of the larger trees near the pavilion. I'm guessing it got maybe 30-35 feet up into the branches, which isn't spectacular but it's what I could reach with the available trees. The radiator came down to the tuner that is tied up high on the corner column of the pavilion. I also used a larger set of radials so the antenna would be more likely to work on 40 meters. But that didn’t seem to matter as I would come to find out…
This is the tree branch I had my wire antenna ran out to, if you look close, you can see the wire antenna in the photo.
Now here's where I need to be honest about the equipment struggles today... I am not immune to making common, simple mistakes and here are a couple from today that I actually did. I started out on 40 meters and wanted to work some stations there since it was supposed to be about 9:30 when I would be starting the activation. Well, that isnt how it went at all. I started out usng the Elecraft T1 antenna tuner with the sBitx. This turns out to be a problem though, you see JJ and the team added a high SWR protection script in the new code and if the SWR goes over 3 to 1 then it automatically turns the output power all the way down to prevent it from killing the finals. Well, it seems that as the Elecraft T1 goes through the tune process, the SWR will rise above 3:1 and this shuts off the RF from the radio and the tuner cant finish the tune…
Elecraft T1 Antenna Tuner with wire antenna and ground radials tied to pavilion column.
But before I figured this out, there is another small detail… The sbitx tune feature is simple, hit a button and it will “dead key” the radio and hold that for a time. Both the level of power and the time are adjustable in the menu so I set it to 20 seconds and the level to about 5 watts as the T1 is a QRP tuner. The Elecraft T1 can tune about anything you want to use for an antenna to a usable SWR so I was confident in the little tuner. Soooo, I would hit the tune button on the sBitx then sprint over to the tuner and hit the button on it to activate the tune feature on the tuner. The tune timer on the sBitx would finish right as I would get back to the radio. I would check it with a Morse code key in CW mode and the radio would and SWR of 5 or 6 to 1 and the output power would be turned all the way down… I would turn the power back up to 5 watts and then try again. I performed this comedy act a few more times before seeing the “SPLIT” button was on and that the B VFO was on 15 meters!
Armed with this knowledge, I confidently turned off split and immediately found myself back to the HIGH SWR alarm on the sBitx… No matter what I did, as soon as the Elecraft T1 would start the tune cycle, it would trip the radio SWR protection feature and this would turn off the transmitter in the radio and by extension, also shut down the tuner mid-tune… Frustrated by this revelation, I found myself getting the Penntek TR-35 out of the bag and using it a couple of times to find out it was doing the same thing! After spending 30 minutes doing this, I finally threw in the towel and just went out to the truck and got my MFJ941 manual tuner and the nanoVNA and connected it in place of the Elecraft unit.
But the fun doesn’t stop here! I could not get this one to tune either! What was going on here!!! Well, it turns out that I had at some point switched the MFJ’s antenna selector from wire to the next antenna port and didn’t check it so I was effectively tuning the SO239 connector on the back of the tuner to 40 meters!!! Good grief, this has been a mess! Once I figured this out and set the tuner to the correct antenna, it tuned up almost instantly. This whole debacle took over an hour to sort out, so if you think you are not very good at POTA setup and breakdown because you see these “old pros” doing it effortlessly, just know we are not immune to errors and odd problems either…haha.
Back to the rest of the activation report…
Radio-wise, I was running the sBitx v3 at 10 watts maximum. For those not familiar with QRP POTA operations, 10 watts is pretty normal power level, it is about 1/10th of what most people run. But it's what the sBitx puts out reliably on all bands and that is well within the Elecraft T1 tuner’s power handling capability (remember, I had started with this tuner), and honestly, with propagation conditions this good, power isn't the limiting factor anyway.
I had my Dell laptop for logging contacts in HAMRS (the POTA logging software), a foldable keyboard because typing on a laptop in bright sunlight is annoying, a CW paddle, and the usual field gear—water bottle, clipboard with paper log backup, etc. Pretty standard POTA kit.
12 Meters: The Band Everyone's Ignoring
I fired up the sBitx on 12 meters around 1600 UTC (11:00 AM local time) and started calling CQ on FT8 at 24.915 MHz. Within seconds, I was getting responses. And not just USA stations, I'm talking Greece, France, Netherlands, Spain.
The station: sBitx v3 running 10 watts, MFJ-941 manual antenna tuner, Dell laptop for logging, Begali Traveler CW paddle, and field keyboard. This setup delivered 72% DX on 12 meters today!!!
The first contact was PB2A in the Netherlands at 1620 UTC. Signal report was strong both directions. Okay, that's promising! 12m is open to Europe!
Next contact: EA5KB in Spain at 1622 UTC. Also solid copy.
Then SV1GYN in Greece at 1626 UTC, followed by SV8EFJ (also Greece) at 1631 UTC.
This is when I realized 12 meters wasn't just "open" to Europe it was absolutely on fire! In the next hour, I worked:
Three stations in Greece (SV1GYN, SV8EFJ, SV7FDA)
Two stations in France (F4IFO, F6BIA)
Spain (EA5KB)
Netherlands (PB2A)
Portugal (CT1FIU)
Czech Republic (OK1DTC)
Poland (SP2GCJ)
Plus Brazil, Dominican Republic, and Canada as bonus DX
That's 10 different countries in less than an hour on 12 meters. With 10 watts. From Florida. To put this in perspective: of the 18 contacts I made on 12m, 13 were DX (non-USA). That's a 72% DX rate.
When was the last time you heard anyone report a 72% DX rate from a POTA activation? This is why solar cycle maximum matters, and this is why you should check 12 meters before defaulting to 20m.
The propagation held solid from about 1606 UTC until around 1657 UTC when it started to fade. That's nearly an hour of wide-open conditions to Europe from a Florida state park with a wire antenna and 10 watts. Just... chef's kiss (I saw someone else use this term and it absolutely applies here, lol). This is what amateur radio is supposed to be.
15 Meters: The Reality Check
After 12 meters started fading around 1700 UTC, I switched to 15 meters to see if the party was still going. Spoiler: it was not.
15 meters wasn't dead as I made 10 contacts between 1738 and 1748 UTC but the DX had evaporated. Out of those 10 contacts:
8 were USA stations (domestic)
2 were Germany (the only DX and were way down in the noise)
That's a 20% DX rate on 15m compared to 72% on 12m. The contrast was striking and immediate. As soon as I moved from 24 MHz to 21 MHz, I went from European pile-ups to mostly USA stations.
This isn't a knock on 15 meters, it's just propagation and we all know how the sky likes to mess with out brains…. By late afternoon (1730-1800 UTC), 15m was transitioning from long-skip DX to shorter-distance USA contacts. Which is fine if you need domestic QSOs to reach your 10-contact activation threshold, but if you're chasing DX, 12m was clearly the better choice earlier in the day.
The lesson here: timing matters just as much as band selection. 12m was the star of the show from 1600-1700 UTC. 15m was better for domestic contacts after 1730 UTC. If I'd started on 15m at 1600, I probably would've missed the entire European opening on 12m.
The 40m and 10m Bookends
I also made a few contacts on 40 meters and 10 meters to round out the activation, mostly just to see what those bands were doing.
40 meters (4 contacts): Mostly short-skip USA stations. Nothing surprising here as 40m in the afternoon is for regional contacts. It works, it's reliable, but it's not going to give you Greece with 10 watts and a random wire thrown over a tree branch.
10 meters (4 contacts): Had a brief opening but nothing like 12m. A couple of USA stations and some Caribbean/Central America. 10m can be spectacular during solar max, but today it was just "okay." You could just watch the stations fade in and out on the band here on the waterfall…
Final tally for the activation:
Total: 36 QSOs
12m: 18 QSOs (50% of total) - 72% DX rate
15m: 10 QSOs (28% of total) - 20% DX rate
40m: 4 QSOs (11%)
10m: 4 QSOs (11%)
Modes: 50% CW, 50% FT8
Twelve meters did half the work and delivered nearly all the DX. That's the story.
Operating With Chas: Multi-Operator Coordination
Chas (NA2B) at his operating position with me in the background. Multi-operator POTA setup at Alafia River State Park—he's about 20 feet away to minimize RF interference.
Chas was set up about 20 feet away at another picnic table under the same pavilion, also activating US-1829. We coordinated our operating so we weren't transmitting on top of each other. He started on 30 meters since I was on 40 and after I finished on 40, I jumped all the way to 12 meters so he could move slowly up the band through 20 then 17 and even 15 before he got his 60 and called it a day. He runs 50 watts currently and has great success with it, but the QRP bug has bitten him and he is going to be turning down the power dial soon… or so he says… haha
This coordination is important for multi-operator POTA setups. You can absolutely operate two stations simultaneously from the same park, but you need enough physical separation to avoid RF interference (20-30 feet minimum), and you need to pay attention to who's transmitting when. If both operators key up at the same time on different bands, you'll hear it immediately as front-end overload or mixing products.
It actually works out pretty well though, you have someone to talk to between contacts, you can share band information ("hey, 12m is wide open to Europe right now"), and if one operator needs help with something technical, the other person is right there. Plus it makes the drive more enjoyable when you're carpooling to the activation site (which we didn’t do this time, but this point is still valid). All of this and it is just plain fun to hand out with a like minded person for a while and just have the fellowship.
Chas and I have done several multi-op activations now and we've got the coordination pretty well figured out. As long as you're mindful of the RF environment and don't step on each other's transmissions, it's actually a really fun way to do POTA.
Lessons for Other POTA Activators
If you take away one thing from this activation, let it be this: check 12 meters before you default to 20 meters.
Most POTA guides and YouTube videos focus on 20m and 40m because those bands are "reliable." And they are! You can almost always make contacts on 20m or 40m during a POTA activation. But reliable isn't the same as optimal…or fun..
We're at solar cycle maximum right now (or very close to it), which means the higher bands—10m, 12m, and 15m—are performing better than they have in a decade. But those bands are only open during certain times of day, and you have to actually check them to know.
Here's my recommended POTA band strategy for 2025-2026:
1. Start with 12 meters during daylight hours (1500-1900 UTC / 10 AM - 2 PM local) Check FT8 on 24.915 MHz or CW around 24.900-24.910 MHz. If you see European or South American stations, stay there. Don't move until the band fades.
2. If 12m is dead, try 15 meters next Same time window. 15m opens a bit earlier and stays open a bit later than 12m.
3. If both higher bands are quiet, then drop to 20 or 17 meters You haven't lost anything by checking 12m and 15m first, it only takes 5 minutes to scan FT8 and see if there's activity. But if you skip straight to 20m, you might miss the entire European opening on 12m.
4. Add 40 meters in the evening or early morning 40m is your regional workhorse. Use it to fill in USA contacts if you need to reach your 10-QSO activation threshold.
5. Keep an eye on 10 meters during solar max 10m can be absolutely bonkers during cycle peaks. Sometimes it's dead, sometimes it's a highway to Japan. Worth checking.
Key point: Solar cycle conditions change everything. The band strategy that worked in 2019 (solar minimum) doesn't apply in 2025 (solar maximum). Adapt your approach, check the higher bands first, and you'll be rewarded with DX that most POTA activators never experience because they're stuck in the 20m/40m routine.
The "Skip 20m" Strategy: Does It Always Work?
Okay, let's be realistic here. Will 12 meters always deliver 72% DX rates? No, of course not. Propagation is fickle, solar conditions vary day to day, and sometimes the higher bands are just dead. The sun giveth and the sun taketh away.. lol.
But here's the thing: you don't know until you check. And checking takes 5 minutes to tune to 24.915 MHz on FT8, watch the waterfall for 1 minute, and see if you're decoding any DX stations. If it is a yes, start calling. If no, move down to 20m like you were going to do anyway.
The worst-case scenario is that you "waste" 5 minutes checking a dead band and then go to 20m as your backup. The best case scenario is that you find a wide open band to Europe with zero QRM and work 10 countries in an hour with 10 watts.
I'll take that bet every time.
Also worth noting: 12 meters is way less crowded than 20m. On 20 meters during a weekend, you're competing with dozens of other POTA activators, contest stations, and regular QSOs. On 12 meters? Most of the band is empty. You can call CQ on an open frequency without worrying about stepping on someone else, and when DX stations hear you, you're often the only POTA station they can work on that band.
Less QRM, better propagation, higher DX percentage, what's not to love?
Alafia River State Park: Worth Activating?
As for US-1829 specifically: yeah, it's a nice park. The covered pavilion makes POTA operations comfortable even in Florida weather (sun, rain, whatever), the facilities are clean and modern, there's RV camping if you want to stay overnight, and the trees provide decent antenna support.
It's about 30 minutes southeast of Tampa, so it's accessible if you're in the area. Not a destination park like some of the big state parks, but definitely worth activating if you're looking for a Florida POTA location that isn't mobbed with tourists.
The tree I used for the 65-foot random wire was a large pine tree of some variety with good height and thick branches for support. Spanish moss everywhere, typical Florida landscape. Got the wire up to maybe 30-35 feet, which is serviceable if not spectacular.
One note: there were RVs parked in the camping area about 100 feet from the pavilion, so we weren't completely isolated. Nobody bothered us though, and one RV owner came over to chat about amateur radio for a few minutes. Friendly folks just out camping.
Best time to activate: Late morning to early afternoon (local time) if you want to catch the 12m European opening. Earlier in the day if you want 40m to be productive for longer distance USA contacts.
Facilities: Bathrooms, covered pavilion with tables, RV camping, paved parking. Bring your own food/water.
Antenna options: Plenty of trees for wire antennas. A vertical would work too if you prefer.
Final Stats and Conclusion
Let's wrap this up with the numbers:
Total QSOs: 36
12 meters: 18 QSOs (50% of total) - 72% DX rate
15 meters: 10 QSOs (28%) - 20% DX rate
40 meters: 4 QSOs (11%)
10 meters: 4 QSOs (11%)
DX Worked: 12 different countries
Greece (3 QSOs)
France (2)
Germany (2)
Brazil (2)
Plus Spain, Netherlands, Portugal, Czech Republic, Poland, Canada, Dominican Republic, US Virgin Islands
Modes: 50% CW, 50% FT8 Power: 10 watts QRP Antenna: 65-foot random wire at about 30-35 feet
The takeaway: 12 meters is the secret weapon for POTA DX during solar cycle maximum. While everyone else is fighting on 20 meters, you can have an entire band nearly to yourself with better propagation, less QRM, and DX rates that would make any contester jealous.
So next time you're setting up for a POTA activation, do me a favor: check 12 meters first. You might be surprised what you find.
Thanks and get your radio out!
Have you worked DX on 12 meters during POTA activations? What bands are you checking during solar max? Drop a comment! I'd love to hear what's working for you.
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73, David / WK4DS
Ten watts to Spain. Ten watts to Germany. Ten watts to Austria. The EFHW at 35 feet made all the difference.
Activating Hillsborough River State Park (US-1878) with a friend is one thing—making over 100 contacts in a single afternoon using QRP power and a homemade wire antenna is another. That's exactly what Chas and I accomplished using a 65-foot EFHW antenna strung 35 feet up in the Florida pines, a ground mounted vertical, his FT891, a Penntek TR-35, and my sBitx v3 running just 10 watts (Chas was running 50 watts today though). This wasn't just a Parks on the Air activation—it was a field test of how well minimalist gear performs in a multi-operator setup, complete with lessons learned about antenna placement, front-end overload, and working around the Florida sun.
Activating Hillsborough River State Park (US-1878) with a friend is one thing, making over 100 contacts in a single afternoon using QRP power and a homemade wire antenna is another. That's exactly what Chas (NA2B) and I accomplished using a 65-foot EFHW antenna strung 35 feet up in the Florida pines, a ground mounted vertical, his FT891, a Penntek TR-35, and my sBitx v3 running just 10 watts (Chas was running 50 watts today though). This wasn't just a Parks on the Air activation, it was a field test of how well minimalist gear performs in a multi-operator setup, complete with lessons learned about antenna placement, front-end overload, and working around the Florida sun.
Hillsborough River State Park entrance designated K-1488 for Parks on the Air activations.
Hillsborough River State Park: Location and Access
Hillsborough River State Park sits about 12 miles north of Tampa and makes for an excellent POTA location. When you arrive at the entrance, the first thing you're greeted with is a ranger station where you pay your four dollar entrance fee. Yes, you read that right—four dollars for the whole day. This is a really nice park with extensive hiking trails, a large loop perfect for biking, and the Hillsborough River running through it where visitors can enjoy boating and fishing.
There's plenty of infrastructure here for families… playgrounds, picnic areas with covered pavilions, and well-maintained facilities. For POTA activators, the key feature is the abundance of tall trees throughout the park, making it ideal for wire antennas. The main loop road has several pull-off areas with picnic tables that work perfectly as operating positions. Cell phone coverage is good throughout the park, which helps for spotting yourself on the POTA network and coordinating with other operators.
After paying the entrance fee, I drove around the loop a couple of times while talking to Chas on the phone, trying to figure out where he'd set up. Here's the kicker, though, he decided to drive over to my location so we could operate together from adjacent tables. This gave us the multi-operator experience but also taught us some valuable lessons about antenna placement and RF interference, which I'll get into later.
The 65-foot EFHW antenna strung into the tree canopy (highlighted in yellow) getting the wire 35 feet high made a dramatic difference in propagation. The wire itself is nearly invisible against the tree background.
The Antenna Setup: 65-Foot EFHW in the Trees
Today saw the use of a 65-foot long wire antenna, an End-Fed Half-Wave from Reliance Antennas. This antenna isn't rated for high power, so I held all of my transmit power to 10 watts or less throughout the day to prevent potential damage to the matching transformer. We deployed it using throw lines to get it about 35 feet up into a large oak tree, then Chas loaned me his 10-foot push-up pole and stand to support the feed point end of the antenna and get it a little higher off the ground as well.
I believe this additional height aided propagation dramatically. Getting the whole 40-meter EFHW that high off the ground, with the far end even higher in the tree, made a noticeable difference compared to previous activations where I'd run antennas lower. I made many contacts all over the United States, into Mexico, and even worked some European stations on the higher bands with just 10 watts. That's the magic of getting a wire antenna up high… height matters more than power in many cases.
The EFHW is resonant on 40m, 20m, 15m, and 10m without needing an antenna tuner, which keeps the station setup simple. I specifically avoided the WARC bands (30m, 17m, 12m) during this activation because the antenna isn't cut for those frequencies and I didn't want to deploy a tuner. Sometimes keeping things simple is the better approach, especially when you're testing equipment and learning how gear performs in the field.
The ranger station where you pay the $4 entrance fee to access the park for POTA activations.
Radio Gear: Penntek TR-35 and sBitx v3 Performance
Once I had the antenna set up and tested, I decided to use the Penntek TR-35 transceiver first. I really enjoy using this tiny little radio, the CW break-in is phenomenal, and the keying from the internal keyer circuit works flawlessly. It's a true QRP radio putting out 5 watts maximum, and I've made some additional accessories for it to turn it into a more complete field station. But even as it sits stock, it's a wonderful little radio that's almost impossible to damage from bad antennas or other field mishaps. Plus, it just works really well at making contacts.
I started on 40 meters and after working through a good run of stations, I decided to move up to 20 meters where activity was heating up. Chas started on 30 meters and worked his way through the WARC bands, eventually ending up on 10 meters where we made a park-to-park contact with each other from 30 feet apart. That was pretty funny, logging a P2P (park-to-park) contact when we could literally see each other across the operating area. I turned my output power all the way down, it showed literally zero output and I was still booming into Chas’ radio!!! Haha!
After finishing my run on 20 meters with the Penntek TR-35, I swapped it out for my sBitx v3. I throttled the output power on the sBitx for two reasons: first, to prevent damage to the antenna which isn't rated for high power, and second, to keep from running down my battery too quickly. I'd brought an 8 amp-hour LiFePO4 battery, and if I'd run the sBitx at full output power I could have easily depleted that battery in an hour or so, especially running FT8 on the lower bands which requires more transmit time. As it turned out, limiting power to 10 watts kept the battery happy all day and I still had plenty of capacity left when we packed up.
Initial station setup with the Penntek TR-35, Dell laptop for logging, clipboard with paper log, and CW paddle ready to make contacts.
The first thing I did with the sBitx was get on 15 m and attempt to make contacts there on FT8. This went pretty well and I made several contacts on 15 m before moving to 10 m to see what I could make on that band. The reason I skipped the WARC bands today was because this antenna is not resonant on any bands other than 40, 20, 15, and 10 m. So I stayed on those bands as I did not want to try and deploy an antenna tuner as well.
The sBitx v3 with improvised sunshade, Florida sun glare was a constant challenge throughout the activation. Notice the notebook to keep my arm off that rough concrete!
Contact Statistics:
Between Chas and me, we logged 118 total QSOs during the activation! 66 in my log and 52 in Chas's log(I did operate a little longer than him and we were not in a race either). Here's my detailed breakdown:
David's Stats (WK4DS):
40 meters: 5 QSOs (all CW)
20 meters: 50 QSOs (all CW)
15 meters: 1 QSO (CW)
10 meters: 10 QSOs (8 FT8, 2 CW)
Total: 66 QSOs
CW: 58 contacts
FT8: 8 contacts
Geographic Breakdown:
Domestic (USA): 56 QSOs across the continental United States
DX (International): 10 QSOs reaching six countries:
Spain: 2 contacts (EA4T, EA5BCO)
Germany: 2 contacts (DL4JCP, DJ9HX)
Mexico: 2 contacts (XE2BCS, XE2IF)
Austria: 1 contact (OE2IGP)
Canada: 1 contact (VE1ZZ)
Poland: 1 contact (SQ9JS)
Czech Republic: 1 contact (OL26WRTC - special event station)
NA2B Chas's Stats: Chas logged 52 QSOs throughout the day, primarily working 30m, 17m, and 10m (he might have done more but that is all I know of) while I focused on 40m, 20m, 15m & 10m. This band coordination helped us avoid stepping on each other while maximizing total contacts for the activation.
Combined Performance: For QRP power (my 10 watts maximum and Chas running 50 watts) and simple antennas, 118 total contacts in one afternoon represents excellent POTA performance. The 10 DX contacts on 10 meters with just 10 watts and the EFHW antenna particularly stand out, working Spain and Germany on FT8, then switching to CW for additional European contacts, demonstrates what's possible when propagation cooperates and you get your antenna up high.
Twenty meters was the workhorse band, delivering 50 contacts in my log alone. The concentration of activity on 20m CW (14.061 MHz) is typical for POTA activations, as this is where most hunters are listening for parks. The handful of 40m contacts at the start of the activation caught the tail end of daytime propagation before that band shifted to primarily short-skip domestic contacts.
Operating Challenges - Sun and Glare
Both Chas and I learned pretty quickly that the Florida sun was not our friend today, even though the temperature was pleasant. The glare from the sun continuously made us struggle to see our displays and adjust settings. I think Chas literally just toughed it out and lived with squinting at his screen. I, on the other hand, kept deploying improvised sunshades and repositioning my station to create shade for my equipment as the day wore on, as you can see in the photos. This is something to think about when planning a POTA activation, a simple popup canopy or umbrella can make the difference between comfortable operating and constantly fighting the sun. Add that to my growing list of field operation lessons learned.
sBitx v3 CW Keying: Improvements and Remaining Issues
The CW keying in the sBitx has been dramatically improved as the software revisions continue. The developers keep optimizing the scan time of the Raspberry Pi processor and how the program executes, making the keyer more responsive with each update. It's almost like using a regular radio now, though there are still quirks you need to work around.
I've learned that I have to pay very close attention to my sending cadence when working CW with the sBitx. The keyer isn't as forgiving as a traditional Curtis-style keyer circuit, and it will send errors if you're not careful with your timing. Knowing this limitation, I work much harder to stay at one speed setting throughout a contact when possible. It's easier to develop muscle memory and consistent sending rhythm at one speed rather than constantly adjusting the keyer speed up and down as I might do with other radios.
With a traditional Curtis keyer, minor variations in your paddle timing get smoothed out by the keyer circuitry and everything sends cleanly. The sBitx will occasionally miss characters if you vary your speed too much, if you slow down suddenly, you can actually outrun the radio's keyer circuit and it won't register that you asked for a "dit," so it leaves it out. This isn't a deal breaker, but it does mean the sBitx requires more disciplined sending technique than most modern transceivers.
I do tend to make more mistakes with the sBitx than I do with other more traditional Morse code radios, and I think all of this traces back to the timing limitations from the Raspberry Pi's scan cycle. But it's getting better with each software update, and for a radio that does CW, SSB, and all digital modes in a package this small and affordable, I'm willing to work around the keyer quirks.
Chas operating his Yaesu rig from the adjacent picnic table. His vertical antenna is behind me and to my right. My wire antenna is behind him.
My operating position in the foreground with Chas visible about 30 feet away in the background—close enough for a park-to-park contact but creating some RF interference challenges.
20-Meter Band Issues: IRF520 vs IRF510 Amplifier Problems and Receiver Front End Overload"
The final two photos show a couple issues I've been wrestling with on my sBitx. The first image shows my sBitx operating on 10 meters with lots of noise lines visible in the waterfall display. These noise lines are coming from Chas transmitting Morse code on a different band, his signal is getting into my receiver and creating visible interference. I don't remember exactly what band he was on, but the important lesson here is that antenna placement matters tremendously when you're running multi-station setups like this one.
sBitx running FT8 on 10 meters (28.074 MHz) showing the noise spikes from Chas transmitting on a different band nearby 9in the waterfall) this is what front-end overload looks like in a multi-op field setup. The vertical lines in the waterfall are RF bleed-through from his station 30 feet away.
Be mindful of where you place antennas if you're operating a multi-operator event. We were only 30 feet apart, which is far too close for optimal isolation. I was still able to work many contacts even with this persistent noise coming through, though. This is something you learn to work around if you're going to be an amateur radio operator in a multi-operator event of any kind…think Field Day here. It's just part of the game, so you expect it and adapt. We could have used bandpass filters to eliminate most of this interference, but I didn't bring mine to the park.
The next photo shows my sBitx on 20 meters, and on 20 meters my radio has a persistent issue that I'm still troubleshooting. I'm beginning to believe it has to do with the IRF520 MOSFET transistors that I used in the power amplifier section when I built this radio. These IRF520 transistors have significantly more internal capacitance than the IRF510 transistors that Farhan originally specified in the revised amplifier design. I think this extra capacitance is causing the amplifier to oscillate, and that oscillation is what you're seeing as the noise signal in the photo.
sBitx on 20 meters CW mode (14.061 MHz) showing the noise from what I am suspecting is from oscillating mosfets.
Here's the interesting part: as the radio warms up during operation, this spurious noise signal moves down in frequency within the 20-meter band. If I want to push it out of the way temporarily, I'll switch to 40 meters or 80 meters and run FT8 for a few minutes. You generate more output power on those lower bands, which heats up the amplifier section faster. Usually, if I just run FT8 first thing when setting up, it warms up the transmitter enough to push the oscillation down to below where I normally work CW on 20 meters anyway, giving me a temporary workaround.
This isn't a permanent solution, obviously. I'm convinced I'm going to have to address this capacitance issue when I get back home, probably by swapping out the IRF520s for the specified IRF510s or adding additional filtering to the amplifier circuit. But for now, knowing the workaround lets me keep the sBitx operational in the field for POTA activations, which is what matters most.
Multi-Operator Challenges: RF Interference and Antenna Placement
Operating two stations in close proximity taught us several valuable lessons about multi-operator setups. The biggest challenge was RF interference between our stations. With antennas only 30 feet apart, we experienced significant front-end overload, when Chas was transmitting on his station, I could see his signal bleeding through into my receiver on completely different bands.
The sBitx has a somewhat easy-to-overload front end compared to more expensive commercial receivers, which made this problem more pronounced. But even with a better radio, operating this close together without bandpass filters or careful band coordination is asking for trouble. The solution for future multi-op activations is simple: either space antennas much farther apart (100+ feet minimum if possible), or operate on bands that are far enough apart in frequency that filter roll-off provides natural isolation.
The position of your antennas matters just as much as the distance between them. If we'd oriented our antennas at right angles to each other instead of parallel, we might have achieved better isolation through pattern nulls. These are the kinds of things you learn by doing, and they apply equally to Field Day operations where you might have multiple stations running simultaneously.
Despite the interference challenges, we still made excellent contact numbers. Multi-operator POTA activations are worthwhile because you can cover more bands simultaneously, operate different modes at the same time, and keep the activation going continuously while one operator takes a break. Just be prepared to work around the RF challenges that come with the territory.
Who Should Activate This Park?
Hillsborough River State Park is an excellent choice for both first-time and experienced POTA activators. Here's why:
For beginners: The $4 entrance fee is minimal, facilities are excellent with clean restrooms and covered picnic areas, and the tree coverage makes wire antenna deployment easy. You don't need to hike to reach good operating locations…everything is accessible by car right off the main loop road.
For experienced activators: The park's location north of Tampa puts you in a good spot for both domestic and DX contacts. The tall pines support wire antennas at significant heights, and there's plenty of space to spread out if you're running a multi-operator activation.
Best practices for K-1488:
Arrive early morning (8-10 AM) or late afternoon (3-5 PM) to avoid midday heat and sun glare
Bring sunshade or canopy, there's limited natural shade at the picnic tables
Plan for 2-3 hours of operating to get a good contact count
Cell coverage is good for self-spotting on the POTA network
Spring and fall offer the best weather conditions
If you're in the Tampa Bay area and looking for an easy, productive POTA park with good facilities, Hillsborough River State Park should be on your list.
Activating Hillsborough River State Park proved to be a highly productive POTA outing. Between Chas and me, we logged well over 100 contacts using QRP power and simple wire antennas…proof that you don't need high power or expensive gear to have success in Parks on the Air. The 65-foot EFHW at 35 feet worked exceptionally well, the Penntek TR-35 remains one of my favorite field radios for CW, and the sBitx v3 continues to impress despite some remaining amplifier quirks on 20 meters.
Key lessons learned: antenna height matters more than output power, multi-operator setups require thoughtful antenna placement to avoid interference, and limiting transmit power to 10 watts keeps your batteries happy all day. If you're looking for a beginner-friendly POTA park in Florida with good tree support and easy access, Hillsborough River State Park (K-1488) is an excellent choice.
Have you activated K-1488 or other Florida state parks? Share your experiences in the comments below, I'd love to hear about your favorite POTA locations and antenna setups.
Want more POTA activation reports and technical amateur radio content? Check out my other WK4DS blog posts for detailed equipment reviews, antenna builds, and field operation tips.
Frequently Asked Questions About POTA Activations
What is Parks on the Air (POTA)?
Parks on the Air is an amateur radio operating activity where hams set up portable stations in state and national parks to make contacts. Activators (operators in parks) try to make at least 10 contacts to qualify the activation, while hunters (operators at home) try to contact as many parks as possible. It's similar to Field Day but focused on public parks and conservation areas. POTA encourages hams to get outdoors, test portable equipment, and promote amateur radio to park visitors. The program started in 2016 and has grown to include thousands of parks across the United States and internationally.
How do you activate Hillsborough River State Park for POTA?
To activate Hillsborough River State Park (K-1488), you need to set up your amateur radio station within the park boundaries and make at least 10 contacts. Pay the $4 entrance fee at the ranger station when you arrive, then find a suitable operating location with trees for antenna support. Most activators set up at picnic tables near the main loop. Operate from battery power or a generator, no AC mains allowed for POTA activations. Log your contacts using a smartphone app like HAMRS or POTA Logger, then upload your log to the POTA website within a few days. The park has excellent tree coverage for wire antennas and is open from 8 AM to sundown year-round.
What is an EFHW antenna and why use it for POTA?
An End-Fed Half-Wave (EFHW) antenna is a wire antenna that's fed at one end through a matching transformer (typically a 49:1 unun), making it incredibly easy to deploy in the field. For POTA activations, EFHWs are popular because they require no ground radials, work on multiple bands without a tuner if cut for harmonically-related bands, and can be thrown into trees using a throw line and weight. My 65-foot EFHW works on 40m, 20m, 15m, and 10m, covering the most productive POTA bands. Getting it 35 feet high significantly improved propagation compared to running the same antenna closer to the ground. A properly deployed EFHW antenna at height will often outperform a vertical antenna at ground level for DX contacts.
Can you run two stations at the same POTA activation?
Yes! Running multiple operators at the same park location is allowed and encouraged in POTA. Each operator logs their own contacts and submits their own activation log. Chas and I each operated our own stations about 30 feet apart, which let us cover different bands simultaneously and maximize the total contact count. However, you need to be mindful of RF interference between stations. With our antennas so close together, I experienced front-end overload on my sBitx when Chas was transmitting on nearby bands. Solutions include better antenna separation (100+ feet apart if possible), using bandpass filters on receivers, or coordinating to operate on widely separated bands like 40m and 10m simultaneously.
What's the best QRP radio for POTA activations?
For CW-only POTA activations, the Penntek TR-35 is exceptional. It's lightweight (under a pound), battery-efficient, has outstanding CW break-in, and is nearly indestructible, perfect for field operations. For multi-mode operation covering CW, SSB, and digital modes, the sBitx v3 offers incredible value and capability in a portable package, though the CW keying requires careful technique and practice. Other popular POTA QRP rigs include the Elecraft KX2/KX3 (premium price but premium performance and battery efficiency), QRP Labs QCX-mini (CW-only, ultra-portable and inexpensive), and the Xiegu G90 (good SSB performance, acceptable CW, built-in tuner). Choose based on your preferred modes, budget, and how much weight you want to carry into the field.
How many contacts should you expect from a POTA activation?
Contact numbers vary widely based on propagation conditions, time of day, your operating skill, and whether you're spotted on the POTA network. A successful activation requires at least 10 contacts to count, but most activations yield 20-40 QSOs in an hour or two of operating. Our 100+ contacts in one afternoon between two operators was excellent, partly because we covered multiple bands and modes (CW, FT8) and had good propagation to Europe on the higher bands. If you're new to POTA, expect 15-30 contacts on your first few activations. Using CW typically yields more contacts than SSB due to pile-ups from hunters chasing parks, and FT8 can be productive when propagation is marginal or when SSB isn't getting through.
My 66 contacts plus Chas's 52 gave us 118 total QSOs from K-1488 on February 17, 2026. Ten of mine reached six countries across two continents, all at 10 watts or less.
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David / WK4DS
Overall, today we had a wonderful day and made many contacts and was able to test antennas and enjoy ourselves in the warm Florida sun far from home where all the cold weather and dreariness is at. So until next time, get your radio out and go power it up and make a contact on it. That’s why you bought it after all.
Chas grabbing a photo from his perspective for posterity! HaHa! Look at all that stuff I brought!
Over 100 QSOs at Chito Branch US-5524 POTA Activation AAR
Once on 15 meters with a warm radio, I set off with calling CQ on a clear frequency. I called for maybe two or three minutes before I started getting replies…and then I got more, and more, and more till I had a genuine pileup on 15 meters! There was times when I am sure I could hear at least ten stations calling at once and this happened a coupe of times today!
Today saw me working on my kilo at Chito Branch again. I figured I would net 30, maybe 40, contacts considering the band conditions and the problems I was running into, but nothing prepared me for what happened today…
The Antenna and Radio Setup
I arrived at the park after hitting a pretty heavy traffic jam this morning a little frustrated since I am attempting to secure the kilo before we leave town for the rest of the year. I get to the park and there is not a single person on site other than me, which gives me the pick of the litter of locations. I immediately go about setting up the antenna and tuning it.
I also noticed today something about the antenna that was of interest to me. I will be investigating it further and writing about it soon. It is that the characteristic impedance of the vertical can not be made purely 50 ohms without a reactive component at all. It simply doesnt work. I testing it for a few minutes as I was curious and as I would tinker with the vertical and the radials to move the plot to purely resistive, it would move the frequency of the antenna off at the same time (stands to reason) but I couldn’t get it to a nice clean 50 ohms no matter what I did. I tinkered with it and the radials till I got the null on frequency and the SWR as low as feasible and moved on to the radio.
After I finished setting up the antenna, I chose to use the TenTec Scout 555 amateur radio and only pulled the 15 and 20 meter band modules for today’s activity. I wanted QSOs in the log and not exotic bands today… I had made a mistake last night though, this radio is temperature sensitive to some degree, it will drift in frequency (mine wanders slowly up) till it warms up from use. So when I am running the keyer and the radio is in transmit a lot calling CQ, the radio heats up in the back and slowly that heat creeps forward in the case to warm the rest of the electronics. Once warm I find the radio to be very stable and work exceeding well, but until it does, I have to watch it and turn the VFO down a little at a time till it is warm. This is what I had to deal with today
The POTA Activation Begins…
People were sending me notes in the spots on the POTA website about my frequency so I would know about the drift. I love how the hunters are there for you all the time, even once they have you in the log. That is awesome camaraderie if I must say so. I racked up a staggering 35 QSOs in short order! It was going so well that I figured I would hop onto 15 meters and see if I could get 40 or 45 before I ran out of time… What happened next blew my mind. After I worked those 35 stations it is like the radio simply turned off, I don’t know if I had worked everyone on the band or if the band had started to close, but I could no longer hear anyone calling. So I called CQ a couple more times and finally after not hearing anyone else for a coupe of cycles, decided to QSY to 15 meters.
The ¼ wave telescoping vertical antenna was simple and effective today.
TenTec Scout 555 Amateur Transceiver with Begali Travler CW Key
15 Meters Gets Sporty!
Once on 15 meters with a warm radio, I set off with calling CQ on a clear frequency. I called for maybe two or three minutes before I started getting replies…and then I got more, and more, and more till I had a genuine pileup on 15 meters! There was times when I am sure I could hear at least ten stations calling at once and this happened a coupe of times today! I also knew from prior experience that 15 meter is kinda where I start really hearing DX stations when the band is in good shape so I was kinda listening for stations with callsigns that start with letters other than A,K,N and W. I have found that after doing POTA for a while that my brain instinctively listens for one of those letters first in the call. If I don’t hear one of those 4 at the beginning then something in my brain trips and I only get the last 2 or 3 letters of the callsign and require a repeat…unless…I am on 15 meters and above.
It is really rare for me to even hear DX with the antennas I use for POTA until I get up to 21 mhz or higher. To be honest, I am surprised I hear them at all with some of the antenna designs I use. The ¼ wave vertical pictured above is a prime example, I am pretty sure this antenna needs to be a good bit higher in the air for a good DX take off angle, but here we are….
Here is the list of the DX I worked today from a POTA park:
DX Countries Worked:
Working DX on simple antennas is one of the joys of amateur radio. The ARRL's guide to HF propagation explains why 15 meters can be so productive for European contacts from the US.
Venezuela - YV1GIY
England - G0LLU, G3NKQ
France - F6CAX, F6OYU
Spain - EA4MZ
Belgium - ON5JT, ON4ZD
Czech Republic - OK1MGW, OK1XC
Germany - DF2PI
Cape Verde - D4HP
Belarus - EW6GB
Russia - R1QBD/3
Israel - 4Z4DX
China - SH2NR
I use HAMRS for my POTA logging.
AAR POTA Wrap Up
As you can see, I was hearing people from all over the world! I couldn’t believe some of the ones on this list. I don’t think I have ever worked Cape Verde before! He was really weak too, I could just make out the call and signal report after him repeating it a few times, but we got it done! Europe would come booming in with spurts of band openings apparently as I would work two or three at one time then it would go silent in the EU for a while then it would happen again.
Now this is not to say the band was in perfect condition. There was considerable QSB (fading) of the signals today, but it was manageable with a decent set of headphones and a properly adjusted radio. I could hear all but maybe 3 stations that I could hear at all. Of those three, one of them I almost got but then it faded out completely. I was so close too… Anyway, the calls just kept coming in and over the next hour I hit 50 then 60 then 70 and the log just kept building. I use HAMRS for my POTA logging and it shows the total in the top corner like a little scoreboard...
I finally got to something like 78 and had a couple of duplicate calls by now so I wanted to finish with a solid 80 and started really working towards this new little goal I had thrown up. Then I did it and then ran right past 80 to almost 90! It just kept happening! 15 meters was on fire today! I finally got to about 98 and I was almost out of time so I decided to stop at 100 even if I didn’t account for the duplicates. 98 is better than being late for picking up the XYL (the wife)… haha. But then I hit a little run of 5 and landed finally on 103 and the goal being reached, I called QRT and powered off the station. This is what I love about POTA, the callers were coming in from everywhere.!
Screen capture from the HAMRS logging software QSO map.
This map blows my mind, all of those calls were worked on a 30 year old, 40 watt TenTec Scout 555 radio (I turned the power down from factory spec for a reason)that has to warm up to stay on frequency, with an “outdated” mode that appears to be very NOT outdated at all, with a less than ideal antenna! So with all this I have to say, just get something together and don’t worry too much about if it has perfect SWR or if the antenna is “high enough” for DX, obviously that don’t matter when the band conditions get right! Now of note, most of the DX (I think almost all of it other than Venezuela, is 15 meters only) also all of the west coast if 15 meters as well as several of the ones due north of my position.
Elated at the fact that I had put over 100 calls in the log toward my kilo, I hurriedly broke down the antenna and packed the radio away and drove off to get the wife from school. Now if I can just repeat this again tomorrow…haha.
How many watts does the Ten-Tec Scout 555 output? The Ten-Tec Scout 555 outputs 50 watts from the factory, I have mine “turned down” to 40 watts as this is a simple adjustment and helps protect the radio from high SWR issues in the field, which is more than adequate for POTA activations and working DX on CW. Despite being a 30-year-old radio, it performed exceptionally well during this activation and many others in the past.
What bands work best for DX during POTA activations? 15 meters (21 MHz) and above typically offer the best DX opportunities during POTA activations (for me at least). At US-5524, nearly all European DX was worked on 15 meters, while 20 meters provided primarily US contacts.
Do you need a perfect antenna for POTA DX contacts? No - this activation proved that DX is possible with simple antennas. Using a basic quarter-wave vertical with radials at ground level, I worked 12 countries across Europe, South America, Africa, and Asia…in one sitting.
Why does the Ten-Tec Scout 555 drift in frequency? The Scout 555 is temperature-sensitive and drifts slightly as it warms up during transmit cycles. Once warm (after 15-20 minutes of operation), it becomes very stable. Simply adjust the VFO slightly downward as it warms. The radio drifts in frequency due to component value changes as they warm up, this is common in older equipment or less sophisticated designs like the Scout 555. Things like crystals will change frequency when they get warm, other things like capacitors will also change value with temperature if they are not specifically stabilized versus temperature.
What is the best logging software for POTA activations? HAMRS is excellent for POTA logging - it's free, works offline, handles POTA references automatically, and generates helpful QSO maps. It also exports to ADIF format for easy upload to pota.app. Is it the best? For me it is…
Related Posts
Hope you enjoyed this AAR, leave a comment and I look forward to hearing from you in a future one,
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David - WK4DS
Rainy day CW POTA is the best...for me.
When I set out to activate a park today, I didn’t know where, but rather, only how I wanted to do it. I have been using FT8 so much lately that I got to missing my little CW only radios.
When I set out to activate a park today, I didn’t know where, but rather, only how I wanted to do it. I have been using FT8 so much lately that I got to missing my little CW only radios.
The Penntek TR-35 CW QRP radio is perfect for POTA
Today saw the re-emergence of the Penntek TR-35 and all the little widgets I made to go with it. I really love this little radio and now I have built an actual travel kit around it so if I wanted to take it somewhere on a plane, the kit will fit in my carry on baggage.
The travel kit doesn’t include the s-meter module or power pack/speaker, but those are “luxuries” anyway. The kit does have everything needed to get the radio on the air and making contacts and that is all that it has. Anyway, let’s get to today!
Pictured above is the radio and the “S meter” I built to go along with it. This meter works really well and makes using the radio just a little more fun for me. Is it needed? No, not at all, but that isn’t the point. This needle bouncing around while I copy code somehow is soothing for some reason and I can see how strong the signal is visually as well. I wrote about how I built in in this blog post.
Another thing of note is that this tiny little N6ARA key works REALLY well. Way better than something this simple should work… It actually works so well that it is worth using as a regular key. It is that good. Now to be fair, I dont know what the life of the key would be as it is PC board material so the contact thickness isn’t that much, but these keys do work really well. It takes a while to get it dialed in (read that as adjusted to your sending feel and style) but once you do, it is amazing how well it works. I should have gotten the larger variant, but I had this silly idea about minimalism and because of this, I got the little one.
Getting the key adjusted correctly and then some practice using it and this thing is amazing. Take it from me, if your not super concerned with every gram of weight, then get the bigger unit. It gives you so much more to hold onto that it isn’t even a option for me now. I still have the small one, but I do plan at some point to get the larger case for it.
Getting a spot on the POTA website
I posted this screen shot, of my spot on the POTA website, because I wanted to thank David- WA2OTC for going to the trouble of spotting me on the website while I was at the park without good cellular signal. He even came back to me and let me know that he had gotten the spot on there before moving on with his hunt. Thank you David!
It was really nice to not have to worry about getting on the website and getting myself spotted. You are probably thinking, then how did you get the screen shot? Well, I didn’t have a total black out, but just weak signal, so I simply loaded up the website and waited the 5 minutes or so for it to populate (seriously, I thought it would never load) so I could grab a screen shot for the blog. It would update EVER SO SLOWLY if I left it on the page. This location is a geographical oddity, it is close to the city but in a particular spot where there is terrible cellular coverage for some reason.
Welcome to fall and winter in the south. I have realized over the years that we get most of our water in the winter and I have planned accordingly. Things like the tape on the coax connector below to keep the rain out during an activation… Don’t forget to keep a roll of electrical tape in your car. Another trick I learned in working electrical maintenance over the years is that if you wrap the tape inside out (sticky side to the outside) then it wont leave residue on the cable and it works just as well for this purpose. We used it on factory motor connections so the rubber insulating tape would not stick to the connectors and it make changing the motors so much easier.
This exact weather event is what drove me to build the truck-tenna mount and figure out a power source for inside the truck cab to start with. POTA in the rain can still be fun as long as you plan for it.
The Inside-Out Electrical Tape Trick (From 20 Years of Electrical Maintenance)
I learned this trick working electrical maintenance over the years and it's perfect for POTA rain operations. The standard method that most people use is wrapping electrical tape with the sticky side to the connector, and this works fine for permanent installations where you're never going to take it apart again. But here's the problem for POTA: it leaves sticky residue when you remove it, it attracts dirt and moisture over time, and it's a pain to clean off in the field when you're trying to pack up and get home!
The inside-out method is way better for portable operations. You wrap the tape sticky side OUT, which sounds completely backwards but hear me out! The first wrap still sticks to itself even though it's reversed. It forms a perfect… well, close enough… waterproof barrier just like normal tape would. But here's the magic: when you peel it off after the activation, there's no residue on your connector! You can do this multiple times without any sticky buildup.
So how did I learn this? We used it on factory motor connections in industrial settings so the rubber insulating tape would not stick to the connectors and it made changing the motors so much easier. Motors would run for years in dusty, dirty environments and when it came time to replace them, the tape would peel right off without leaving any mess behind. The connectors underneath would be clean and ready to reconnect immediately.
For ham radio applications, I wrap coax connectors sticky-side-out, cover BNC connections between the radio and coax, and protect any exposed metal from rain. It works perfectly! Here's the actual process: Connect your coax normally first. Start the tape wrap with the sticky side facing OUT (this feels weird at first!). Wrap it around the connector 2-3 times, overlapping each wrap by about half. Press the tape to itself as you go so it forms a good seal. And that's it! You're done and it's completely waterproof…for a little while (long enough to complete the activation).
After the activation when you're packing up, peel off the tape and toss it in the trash.
Just like the tape on the coax connector below to keep the rain out during an activation... Don't forget to keep a roll of electrical tape in your car! This simple trick has saved countless activations from rain-related failures. I'm serious about always having a roll in the truck because you never know when weather is going to change on you!
Another thing that has happened at this location is that someone has cleaned it up… I am guessing the park service since there were chainsaws used…a lot. The cut all of the dead trees out as well as cleaned up all the dead-fall and then mowed the entire site! This is the first time I have seen this happen since doing POTA! The photo below was take just a month or so back.
The Joy of CW-Only Operations
There's something special about CW-only rigs like the Penntek TR-35 that's hard to explain until you've actually used one for a while.
The first thing you notice is there's no mode confusion. It's CW and that's it! You don't sit there thinking "should I try SSB instead?" or "maybe FT8 would work better in these conditions?" You just do CW all the time and you stop second-guessing yourself. That simplification is actually really freeing!
This leads to simplified operating in general. There are fewer controls to fiddle with. There's no mic gain to adjust, no audio levels to mess with(other then the obvious AF Gain knob for your headphones), no VOX settings or anything like that. It's just frequency and volume and you're done. You send code, you receive code, and that's the entire operating experience. No menus, no submenus, no functions buried three levels deep in software!
Here's something I didn't expect when I first started using CW-only radios: it actually forces you to improve! You can't fall back on voice modes if CW is hard. You actually have to learn the code better. You have to build your speed and confidence because there's no other option. And you know what? This makes you a better CW operator! When you go back to radios that have multiple modes, your CW skills are way better than they were before.
There's also this Zen quality to CW that's hard to describe. The rhythmic sending and receiving, the meditative quality of copying code, the direct brain-to-brain communication without any voice involved... it's pure information transfer! No misunderstood words, no voice characteristics, just the message itself getting through. I know that sounds kind of woo-woo but it's real!
After using FT8 (which is great!), phone modes (also great!), and other digital modes (all great!), sometimes I just want the simplicity of CW. One mode, one band (20 meters on the TR-35 is a good safe bet), one purpose which is to make contacts! No computer required, no sound card interface, no USB cables, no software updates. Just the radio, the key, and propagation.
This is exactly why today's activation was so satisfying for me. No menus to navigate, no mode switching to think about, no computer to set up and troubleshoot. Just me, the key, the radio, and the other operators on the other end. Simple! And after almost an hour of non-stop contacts, I realized this is what I really love about ham radio. The simplicity and the direct connection to other people through Morse code. I really love this little radio!
So after getting the radio setup and checked for SWR, I hopped on 20 meters right away. I wanted to be sure to get the activation fairly quickly as I didn’t a long time to stay and I also was using my Penntek TR-35 radio which is QRP power too. This gives me the best possible chances at activating…well, I underestimated the capability of the radio a little as you can see from the log. LOL. I first hunted AC4BT to just see if I could get through, this is because lot’s of activators today use 100 watt radios so just listening to the other stations no longer gives you an idea of how strong your signal will be. I make my point with the signal reaport I got back. He was booming into my radio and I was a 339 to him. 339 is workable so I moved to a clear spot, called QRL a few times, then called CQ and that is when things took off!
For almost the next hour, the bands were on fire! The only time there was a significant time between contacts was when I tried to reply to KM3STU and couldn’t get him. He came in strong and then vanished. Shoot, at one point I worked Germany! He was closer to the noise than the other stations but I was able to dig his call out after a minute. It is ALWAYS awesome to work another continent with a QRP radio!!! Alas, after about 45 minutes of non-stop contacts, the band just fell silent for me and after calling CQ for a few minutes, I called QRT and shut down the station as I needed to pack up anyway. This was a great POTA activation for me and one where I look back fondly at how much fun a tiny little radio can be.
I will say it again, if you have thought about activating a park, just do it. If you have hunted, then you know the exchange. Just write the park number at the top of the page for when you work another activator and the want to exchange park numbers with you. You can see that I paper log in the field then enter it into a computer when I get home to submit it to the POTA site so the hunters get credit. I will be honest here, if the hunters didn’t get credit for the contacts as well, I wouldn’t bother uploading the logs at all. For me it is about the experience and not the awards, this is why I have never submitted anything for awards from any organization. I just like operating on the air. So those logs upload are for you, not me… you see, without the hunter, this would not be a huge hobby like it is today, so I want them to get the credit they deserve. Anyway I will stop rambling and until next time, get your radio out and talk to someone on it!
Frequently Asked Questions About CW POTA and QRP Operations
Can you do POTA activations in the rain?
Absolutely! POTA in the rain can still be fun as long as you plan for it. This is exactly what drove me to build the truck-tenna mount and figure out a power source for inside the truck cab to start with. Here's what you need:
Waterproofing:
Electrical tape on coax connectors (keeps rain out!)
Pro tip: Wrap the tape inside out (sticky side to the outside) so it won't leave residue on the cable and it works just as well
Keep a roll of electrical tape in your car at all times
I learned this trick working electrical maintenance over the years
Operating from the vehicle:
Truck-tenna (receiver hitch) mount lets you operate from inside
Power source in the cab (battery or power supply)
Stay dry and comfortable
Still counts as a valid POTA activation as the whole station is inside the park boundry.
Welcome to fall and winter in the south! We get most of our water in the winter, so I've planned accordingly. Don't let weather stop you from activating parks!
What is QRP and why do you use it for POTA?
QRP means low power operation, typically 5 watts or less. My Penntek TR-35 is a QRP radio, and honestly? I love using it for POTA! Here's why:
Why QRP is awesome:
Small, lightweight radios (easy to carry)
Lower power consumption (batteries last longer)
Challenge and satisfaction (you worked them with 5 watts!)
Proves propagation is good (if you can get through at QRP, conditions are solid)
Fun factor (there's something special about making DX contacts on 5 watts!)
Reality check: The signal report I got from AC4BT was 339 (readable but weak). But you know what? It's workable! I hunted him first just to see if I could get through, because lots of activators today use 100-watt radios so just listening to other stations no longer gives you an idea of how strong your signal will be. At one point I worked Germany with this little radio! It is ALWAYS awesome to work another continent with a QRP radio!!!
QRP isn't for everyone, but if you enjoy the challenge and the simplicity of small radios, it's incredibly rewarding!
What's the advantage of CW over voice or digital modes for POTA?
CW (Morse code) has some real advantages for POTA activations:
Narrow bandwidth:
Gets through noise better than voice
Can copy weak signals that would be unreadable on SSB
Works in poor conditions
Lower power required:
QRP CW is more effective than QRP voice
5 watts CW = 20+ watts SSB in terms of effectiveness
Better battery life
Faster exchanges:
CW POTA exchange can be quick and efficient
Less time per contact = more contacts per activation
Usually people can make clean contacts in poor operating conditions with CW where voice would fail or require many repeats.
Personal preference: I have been using FT8 so much lately that I got to missing my little CW only radios! There's something meditative about copying code and sending with a straight key. The rhythm, the simplicity, the direct connection to the other operator. It's just fun!
That said, use whatever mode you enjoy! POTA is about getting on the air and having fun, whether that's CW, SSB, FT8, or anything else.
How do you activate a POTA park without good cellular signal?
This is a real challenge! At this particular location (a geographical oddity), I'm close to the city but in a spot where there's terrible cellular coverage for some reason. Here's how to handle it:
Before you leave:
Download offline maps of the park
Have your POTA park number written down
Know the exchange you'll use
Pre-plan your frequency and mode and schedule them on the POTA website ahead of time
At the park:
Self-spot if you can get any signal at all (even slow!)
Ask another station to spot you (like WA2OTC did for me!)
Just start calling CQ and hunters will find you eventually
The WA2OTC story: I wanted to thank David WA2OTC for going to the trouble of spotting me on the website while I was at the park without good cellular signal. He even came back to me and let me know that he had gotten the spot on there before moving on with his hunt. Thank you David! It was really nice to not have to worry about getting on the website and getting myself spotted.
Getting screenshots with weak signal: I didn't have a total blackout, but just weak signal, so I simply loaded up the website and waited the 5 minutes or so for it to populate (seriously, I thought it would never load) so I could grab a screenshot for the blog. It would update EVER SO SLOWLY if I left it on the page.
The ham radio community is great about helping activators get spotted. If you can't self-spot, just ask on frequency!
What is the Penntek TR-35 and why do you like it?
The Penntek TR-35 is a tiny QRP CW-only transceiver for 20 meters. It puts out about 5 watts and is incredibly simple. I really love this little radio! Here's why:
What makes it special:
CW only (no distractions, just Morse code)
20 meter monoband (one band, done well)
QRP power (5 watts, battery-friendly)
Small and portable (travel kit friendly)
Simple to operate (no menus, just tune and send)
My travel kit: Now I have built an actual travel kit around it so if I wanted to take it somewhere on a plane, the kit will fit in my carry-on baggage. The travel kit doesn't include the S-meter module or power pack/speaker, but those are "luxuries" anyway. The kit does have everything needed to get the radio on the air and making contacts and that is all that it has!
Real-world performance: For almost the next hour after I started calling CQ, the bands were on fire! I worked Germany! The only time there was significant time between contacts was when I tried to reply to KM3STU and couldn't get him. After about 45 minutes of non-stop contacts, the band just fell silent for me.
This was a great POTA activation and one where I look back fondly at how much fun a tiny little radio can be!
What is the N6ARA key and how well does it work?
The N6ARA key is a tiny straight key designed for portable operations. I have the small version, and honestly? This tiny little N6ARA key works REALLY well. Way better than something this simple should work!
Why it works:
Simple PCB construction (printed circuit board material)
Adjustable contacts and “spring” tension
Compact size (fits in tiny kits)
Surprisingly good feel when dialed in
The adjustment process: It takes a while to get it dialed in (read that as adjusted to your sending feel and style), but once you do, it is amazing how well it works! Getting the key adjusted correctly and then some practice using it and this thing is amazing.
My regret: I should have gotten the larger variant, but I had this silly idea about minimalism and because of this, I got the little one. Take it from me, if you're not super concerned with every gram of weight, then get the bigger unit. It gives you so much more to hold onto that it isn't even an option for me now. I still have the small one, but I do plan at some point to get the larger case for it.
Longevity question: To be fair, I don't know what the life of the key would be as it is PC board material so the contact thickness isn't that much, but these keys do work really well. It actually works so well that it is worth using as a regular key. It is that good!
Why did you build an S-meter for the Penntek TR-35?
The Penntek TR-35 doesn't come with an S-meter, and I wanted one! I built a simple S-meter module that works really well and makes using the radio just a little more fun for me. I wrote about how I built it in this blog post.
Is it needed? No, not at all, but that isn't the point! This needle bouncing around while I copy code somehow is soothing for some reason and I can see how strong the signal is visually as well.
Why I like it:
Visual feedback (see signal strength)
Satisfying to watch (needle bouncing with code)
Helps tune in weak signals
Just makes operating more enjoyable
It's one of those "luxuries" that isn't necessary but adds to the fun factor. And isn't that what ham radio is all about?
Should you upload your POTA logs even if you don't care about awards?
Yes! I will be honest here, if the hunters didn't get credit for the contacts as well, I wouldn't bother uploading the logs at all. For me it's about the experience and not the awards. This is why I have never submitted anything for awards from any organization. I just like operating on the air.
Why upload logs:
Hunters get credit for their contacts
Without the hunter, this wouldn't be a huge hobby like it is today
Those log uploads are for you, not me
It's the right thing to do for the community
My logging process: I paper log in the field then enter it into a computer when I get home to submit it to the POTA site so the hunters get credit. You can see my paper log in the photos!
I want hunters to get the credit they deserve. Without them, POTA wouldn't be what it is today!
What should a beginner know before attempting their first POTA activation?
Just do it! If you have thought about activating a park, just do it. Here's what you need to know:
If you've hunted, you already know the exchange:
Your callsign
Signal report
Park number (write it at the top of your log page)
If working another activator, exchange park numbers
Start simple:
Pick a mode you're comfortable with (CW, SSB, FT8, whatever!)
Bring a paper log (you can log electronically later)
Start on 20 meters (most activity)
Call CQ and see what happens!
Don't overthink it: I underestimated the capability of the radio a little as you can see from the log, LOL. I first hunted AC4BT just to see if I could get through, then moved to a clear spot, called QRL a few times, then called CQ and that is when things took off!
The hardest part is just getting started. Once you make that first contact, you'll realize it's not scary at all. It's fun!
What power source do you use for in-vehicle POTA operations?
I figured out a power source for inside the truck cab specifically for rainy day operations. Options include:
Battery options:
Bioenno LiFePO4 batteries (lightweight, efficient)
Sealed lead acid (cheaper but heavier)
Cigarette lighter adapter (if your vehicle supports it)
QRP advantage: Since the Penntek TR-35 only uses 5 watts, battery consumption is minimal. You can operate for hours on a small battery!
Rain operations: Having power inside the vehicle means you can operate comfortably in any weather. The truck-tenna mount lets me set up the antenna outside while I stay dry inside. POTA in the rain can still be fun as long as you plan for it!
BONUS QUESTION: What's your favorite part about POTA activations?
The experience! For me it's about the experience and not the awards. There's something special about:
Taking radios to beautiful parks
Making contacts from random locations
The challenge of QRP and CW
Meeting other operators on the air
Just being outside with radio gear
Today was a great POTA activation for me and one where I look back fondly at how much fun a tiny little radio can be. The bands were on fire, I worked Germany on 5 watts, and I spent almost an hour making contacts in the rain from my truck!
That's what ham radio should be: fun, challenging, and rewarding. So get your radio out and talk to someone on it!
Moving out for POTA at US-0716
Some days are better than others…
Today saw me putting the truck in the shop to get the water pump repaired as it gave up the ghost on the interstate. It got to ride on the big truck to the mechanic and I have been driving my back up truck ever since. The old white ford is a good truck that we normally relegate to shop duty for deliveries and such but for now it is my daily driver. This also means I have to transfer all my gear over from the Dodge to the Ford and I inevitably forget some stuff. This time it was the AUX cable so that I can run my phone through the stereo…So I have been wearing my AirPods instead. I also don’t have a bed cover like on the dodge so I can’t just leave my radios on the back of the truck and have to take them in the house when I am not using them. This is mildly frustrating since I like to use my truck for a POTA wagon and just have it constantly outfitted with the gear I use.
This is what the operation center looked like today. It is nice to sit in the shade and work some contacts when it isnt too hot. I still used the antenna on the truck mount and just ran the coax out into the grass. Today saw the sBitx V3 deployed again so I could work some CW as well as FT8 quietly while other people rode bikes and enjoyed lunch in the park. I wound up sitting on the hard shell case for the Argonaut as a sort of makeshift chair and it worked really well. I also sat the radio on its hard case to raise it up as well. What POTA activation would be complete without a cup of good chain store coffee? Lol…
As you can see, the antenna worked out quite well on the old ford. I was quite happy with the results even though it was thin on total contacts. I like the fact that I can simply back into a space and setup my antenna right there in just a couple of minutes. There are times that I wished I had a better antenna but you use what you brought and have fun. I did have fun so it is all good. I do have some really good wire antennas to work with but I don’t like trying to string them up in places like this. I am almost certain that it is against some sort of rule in the national parks.
Here is an interesting note about this activation. One of those fancy-smancy Tesla cyber trucks rolled into the parking lot while I was operating and I immediately got this broadband RF hash all over me radio. When he shut the truck down, the hash disappeared and as soon as he powered it back up, it returned. So I am convinced they need better RF shielding of something. You can see it on the display on my radio above.
I am still on the fence as to whether I like the aesthetic of the Tesla Cybertruck or not. Hard to say to be honest. I do like the power availability idea that you can POTA for days from it. It is battery powered after all… Haha…once you shut it down that is…
Until then I will be using my 36Ah battery. This is a Lithium Iron Phosphate battery and is shockingly light for its size and performance. I can run literally for days on this one cell without problem. You can even run several hours at 100 watts if you wanted to… I normally have this plugged into my shack for a backup power system in the event of power failure so that some of my radios continue to work. Mainly my VHF/UHF machines so I can talk to the locals either on the repeaters or via simplex should there be some sort of emergency. On some days though, I will take it to the field with me to make some POTA contacts and this was one of those days.
31 contacts in the log is a great day for me. I had so much fun and even got a bunch of DX into the log! What more can you ask for? Nice weather, ham radio, DX, POTA…it is almost more than you can handle!!! HaHa. Thanks for following along and I hope to see you again in the next one.
72
WK4DS
Broke out the Penntek TR-35 for a change.
When you dont use a radio for a while it is almost like having a new radio…
This radio has quickly became on of my all time favorite radios. This tiny radio has everything you could ask for in a CW machine…EXCEPT for an internal antenna tuner…but I digress. In the past I have had the Elecraft K1 (a couple of times actually) which does have a tuner (both of mine had the tuner) but it was not as intuitive to use. That is why I sold it and got this one instead. It is a better radio in my opinion… Even missing the antenna tuner, I prefer this little radio to the K1, now this comes with some needed caveats as it is not really fair to compare these two radios directly. You see the K1 was design around 20 years ago and the TR-35 my more recently with much more modern technology and features. The stability of the TR-35 is uncanny compared to the K1 which would drift a little till it warmed up. Still the K1 was a wonderful machine for my needs and I used it to activate a POTA park on the island of Hawaii last year, so it is plenty capable.
Due to the weather improving I have moved the “shack” outside and setup on the bed cover to get some sun and fresh air, plus it is easier to work since I can spread out the gear somewhat.
I like these hamstick antennas so much that I am thinking about making a tripod mount for them so that I can setup at a nearby picnic table and use them with an elevated counterpoise concept… I could even get them higher above the grade this way too, possibly improving performance a little.
So this is the whole station today, the hamstick on 17 meters with a 15’ coax to the common mode choke. I put it on the nanoVNA and the resonant point was high, and I think it is from the fact that the 17 meter counterpoise wire have some broken off of them which makes them too short for a tuned circuit. But nonetheless the SWR measurement was plenty good enough to use, so I got on the air in short order. To try to compensate for this, I added the 20 meter radial that works so well for me now in the past on a bunch of bands. (I should probably measure this wire and make a new since it is getting frazzled) but it didn’t help very much today. I left it anyway as it did seem to help a little…
The operating position today… I really like using the bed cover for the operation position as it affords me the most user space I could possible imagine as well as it is simple. I have activated with this battery 3 or 4 times at this point and it is still over 13 volts!
The key for today is the Gemini travel key. This has turned out to be a wonderful little key and I am so happy to have bought it. It works so well.
As you can see from the log, I had a great day on 17 meters and even landed me a DX station! Jan was in the Netherlands when I started hearing his callsign! It was awesome that he could hear me too!!! There was some fading of course, but he could hear me! I made a good bit of notes about the activation in the log today where you can see things happening like when I lost a QSO outright to some one tuning up on top of me…for a long time… There is another note about the time when someone had a messed up car ignition that created some broad band noise and I couldn’t hear anything for a few minutes till they left.
Testing a new power pack for backpacking…
This is the idea… I think I want to do some SOTA activations after listening to K4SWL talk about them on his YouTube channel. So this means that I need a smallish radio setup to be able to do these kinds of activations. I have to be able to pack them in and out from the SUMMIT, yeah, the very tip top of a mountain…
Today’s blog post covers the idea I have for a power source. I am going to use AA batteries. I know I can buy a Bioenno battery, but this gives me the options of picking up regular alkaline batteries if need be (I plan to make a couple of aluminum dummy cells for this option so the voltage wont be too high). It also allows me to repurpose the cells for my HT radios too as I have them configured to used these batteries as well. I found these 10 cell battery holders on Amazon and ordered one to try it out. Since it hold 10 cells, the voltage is higher and gets closer to the regular battery voltage everyone uses. The cells are 1.3 VDC when charged so this adds up to just over 13 volts in this kit. I measured the pack today before the activation at 13.2VDC…Perfect for what I wanted. So I load up the new battery pack and head over to K-2169 to test out the power pack life with a POTA activation.
The above photo is an optical illusion that has to do with the shutter speed of me camera and the refresh rate of the display on the radio, to the naked eye it was not gapped like this but looked fine. This little radio is a perfect little radio for SOTA so I am going to use it for that purpose.
Here is the basic radio kit as I plan to deploy it. The headphones are smaller and lighter than my box speaker/battery pack I made. I can also hear better on headphones too so it just made sense to use these instead. These are Sony headphones if I remember right, but I could be wrong. I will also be using my little travel key I bought as it is perfect for this project…till I get the new one that I plan on in the not-to-distant future.
I also plan to use a 40m EFHW antenna for my activations and just work 40m and 20m bands with it. This is the simplest antenna setup I can come up with as it doesn’t require a tuner and is pretty small for what it can do. I might get one of the compact verticals at some point, but for now that will have to do. I will also take a piece of throw line and a throw weight as well to get the antenna into the air. I will also add a piece of coax as this is the counterpoise in most cases. Otherwise I will need a coax AND a counterpoise… so I will eliminate the counterpoise and just work off the coax shield instead. Above is the tuner I used today as it was still in the truck from the last activation and I know how good it works.
This is the beauty of using campgrounds to activate, there are plenty of tie off points for your antenna system. LOL
After working almost 50 contacts over about 2 hours with almost all of it either making a contact or sending CQs meaning there was significant battery draw over these two hours, the battery voltage had only dropped from 13.2 to 12.82VDC. A little less than .4VDC or about 3% of the pack voltage overall. That is great as this tells me that almost any hike-to activation will have plenty of power to make contacts. I dont think I will be doing SOTA where I will have more than two or three hours on the summit for radio as there is the hike to and fro that has to be factored in as well. I call this part a success.
Pro-tip to the new hams just getting going. Grab a cheapo little volt meter for a field meter. This one was only a few dollars and worked perfectly. This technology has gotten very affordable and can be a priceless tool when you need to check the continuity of a piece of coax or to see if the battery pack has voltage on it like here. It has come in handy quite a few times now and stays in my POTA kit all the time. Until next time…72
My 80th Activation of K-2169
This AAR is brought to you by… wait for it… me! Lol. But seriously, today is special for another reason or two, on this day I activated Cloudland Canyon State Park for the 80th time and I met another ham at my home park!
Today, once again I setup the truck in the lower lot like I did a while back as it is faster somewhat but also it has a different view as well. I normally don’t setup down here as I have had issues with electronic hash noise in this area (I am guessing it is coming from inverters in the campground just over the hill) so that is why I goto the top of the hill where the disc golfers are most of the time. The antenna situation today is as follows, I went ahead and installed all the radials at once as it was threatening to rain the whole time and would sprinkle on occasion during the activation regularly.
I also used my RG-316 coax today along with my rain proof “countermeasures” which consist of a peanut bag taped over the coax connector to keep it dry during the activation. This is a field expedient solve that also happens to be a way to recycle a common piece of trash that would otherwise end up in the landfill. I can even reuse the tape a couple of times if I am careful.
Since I connected all my radials today, I also tried to use the whole suite of antennas that I have currently. If you will look closely, you will se I also installed QD mounts on my hamsticks as well. This made band changes so much faster!
I figured I would start on 17 meters to see what I could hear up there. When I connected it and saw the radio, I had high hopes as the waterfall on the Icom IC-705 had several signals on it. Calling CQ almost immediately netted 2 dx contacts! I worked DL1AX in Germany and SP9RXP in Poland! Did I mention I am only using 5 watts?!?! SP9RXP is 5060 miles from K-2169 so that qualifies for the 1000 miles per watt award! One day I will actually apply for these… HIHI I attribute this entirely to the new common mode choke I made and was using and a nice little band opening that happened at the same time. The choke probably didn’t have much of an impact on this but I want to believe it did.
This choke works so much better than my other one that it isnt even a real comparison. It also seems to help with band noise, but that could just be me wanting to believe it does since I built it more than anything. I know it measures real good on the nanoVNA… lol
While I was on 20 meters this camper van rolls by real slow, I tend to get that a lot with all the radials and the hamstick on the back of the truck. Then the camper van stops right in front of me and the guy gets out and starts over my way. I also get this a lot as people are curious and want to know what I am doing. But then it takes a completely different direction when he says (I am paraphrasing a little here) “Are you doing Parks on the Air?” This caught me off guard as I had never had someone who knew what I was doing, actually ask me if that was what it was.
Turns out this camper was none other than W5DXQ on vacation! He is from Texas and is very active on the air using an assortment of modes. I was in the middle of a QSO so I asked him to let me clear it then we proceeded to talk for about 20 minutes about my rig and CW and digital modes and how he uses the spotter system and SSB and the list goes on and on. Meeting Jeff was the highlight of the activation…well that and working two dx stations right out of the gate on 17 meters… It was awesome to finally meet someone else who does POTA at a park. I am so glad he decided to stop and ask what I was doing. I hope to work him on the air at some point! Now the challenge for me is to meet someone actually activating like Jeff did when he found me today.
Once we finished our eyeball QSO he headed off on his adventure and I got back on the air. Looking at the QSO map, it looks really odd with the two european stations when compared to the North American dispersion that happened once the band opening closed on 17 meters. I normally net at least a few western states but today saw no one west of Texas.
As you can see from the logbook, today 30 and 20 meters were the bands to use but even then the reports were showing how the bands were fading in and out. I did make some contacts on all four bands though so I am super happy with that.
The peeps over at the POTA website even sent me this cool certificate to commemorate the 80th activation! Nice!
All in all, it was a great day for POTA. I hope to hear you on the air soon. 72 de WK4DS
Activating an Off-road Vehicle Area is not always a great idea.
Sometimes things look better on paper…
But in execution, they are not a great ideas.
This is the story of me (WK4DS) at K-5493 Franklin-Marion State Forest.
On my way over to the park, I passed through South Pittsburg, Tennessee to shoot a little photography first since it was on the way to the top of the mountain to do an activation…
When I arrived at the park location I liked, it was perfect weather and quiet and as you see from the photo, I had the place all to myself. Well, that changed in about 15 minutes from the time I took this photo. You see, this “park” on the POTA map is actually a state forest with OHV trails on it. I parked in a clearing that is about 100 yards off of the paved road and is next to an old forest service fire tower. The luxury to this site is that it is literally on top of the mountain and 100 yards of gravel road from the pavement. So I have a great elevation profile because of that and easy access to a good site.
This is an old forest service fire tower. It was on the other side of the clearing and is so old that it had trees growing through the framework and the building at the top had no floor in it anymore. I remember these in use as a kid, but at some point they stopped using them, and from the looks of this one, it was probably in the 90s. There was another feature that I noticed as well… Have a look at the photo below and take a guess what made all those holes…
I cant go up there and see, but I am pretty certain those are bullet holes. That is one thing that “rednecks” are good for, shooting things like this… I don’t know where this mindset comes from, but they tend to do things like this. It is unfortunate too as this is basically destroying relics from our local history for simple entertainment.
Another thing that I ran into on this trip was that the little adapter shown below that goes on my headphones has failed. It was causing some heavy shorting issues and I ended up figuring out that if I spun it to the right position it would not cause a problem, but spin it just a little and it would make terrible feedback. I didn’t have a spare either so I ended up using it and just being super careful with it…Always have a spare is the lesson here.
In the photo below you can see what I am talking about when I say there were ATVs going by while I was operating. Lots of ATVs would pass through at times, like 4 to 6 in a group at once. These vehicles also don’t have great mufflers either so it would be hard to hear while they were going by…
Since it was nice weather, I wanted to use the truck bed cover for my operating position and because of this, I was right next to the antenna. Also if you will notice, there was a couple more hamstick antennas this time. I picked up a 17m, 30m, and a 40m Shark brand hamsticks from Chatt Radio and spent the morning before the activation today tuning the 17 and 40m antennas. I didn’t do the 30m unit yet because I ran out of time as I wanted to try an activation today and I still had to make all the parts for the radials for the 30m antenna from scratch… Once I got the 17m radials made and tuned and then cobbled my 40m hamstick radials together so it would work (I think I need to revisit this one at some point and make better radials for it), I was off to the races! This design of antenna and mount work extremely well for their size.
Today’s weapon of choice is the Penntek TR-35. This radio has everything you need and nothing you don’t. It is just a great little CW rig that is simple to use and works really well.
This is a close up of my 17meter radial tie down, that I dubbed “Gen 2”, ground weight design. I can remove the weight easily from this plastic connection plate and use it on a different radial if I wanted to change bands or something like that. This worked really well and was easy to setup and tear down too. My old design coupled the weight to the radial making it a dedicated weight, which is simpler to make, but not as versatile to use as the weight is part of the radial.
Below is the complete antenna kit as of today. This doesn’t show the mounting bracket that I made to install these on, you know the big yellow one, right? But here are the radials and antennas that I currently have tuned and are ready to get on the air. Once I get time to work on the 30m antenna, I will add it to the stable. The ham-stick is a very viable option for the QRP POTA op. I used these today to get the contacts below and you can see that the signal reports show it works just fine. If you have one, this is something that I suggest you try to use. They need the radials though to get the best performance. I have found that is important. Supposedly they are designed to not need them, using the coax as the counterpoise but they just get out so much better with them tuned to the band with a proper counterpoise.
If you will notice, I make lots of notes as I go in my log, but I had a great day on all three bands. It was cool to get some contacts on 17 and 40 meters today, but if you will notice, all the magic happens on 20 meters… That is where the bulk of my contacts happened today. I also was able to work the same ops on multiple bands which is kind of cool.
So even if you run into problems with the location like I did, just get the radio out anyway as it just might be the day you put over 70 QSOs in the log! So till next week, get that radio out and throw a wire up into a tree!!!
A super cold (for me) POTA CW ham radio activation
Well today was super cold to me after spending a month in central Florida. It was 29 degrees and the wind was howling at park K-2169 (Cloudland Canyon) back in NW Georgia!!! I didn’t let that stop the ham radio bug in me from getting out in the cold and activating a POTA site!
I thought to grab a selfie to remind me of how dumb I was to get out in this cold weather so maybe I would think better of it in the future…probably not, but it was worth a try. You can see how I have the door open on the truck, I was using it for a wind break to keep the crazy gusting winds from freezing me solid with wind chill. That is why I logged in the back seat instead of on top of the bed cover which is my preferred location if I am using the truck for ops.
The weapon of choice today? The Elecraft K1 (4 band version with 40, 30, 20, &17) My particular machine also has the internal antenna tuner as well. I guess you could say it has everything other than the internal battery. This is my second copy of this tiny machine, but I have had a long love affair with these little radios. I sold the first one and literally missed it the day i shipped it off. It only took me a few years to find another one like the first one and get my little grubby paws on it…this time for keeps. Of all my QRP rigs, I place this one VERY near the top.
In the photo below we see the Elecraft K1 as seen from the top, I have placed the BNC to screw lug device on the antenna output of the radio and connected the antenna and counter poise directly to the radio with no feedline at all. I did this on purpose to test the system like this for a upcoming project I want to use this radio for in this configuration. This allows me to see how effective it is with a very minimalist rigging. I am wanting the whole thing to be as minimal as possible and still reach the west coast if possible. You see, I have a week in Hawaii and by the time you read this, I should have been there and returned with at least one activation from the Big Island of Hawaii under my belt… only time with tell.
The below photo shows how I took the tension off of the radio with the wire antenna once I strung it up into the tree next to the truck. This is a modified version of a knot we used in the Boyscouts called a taught line hitch. It works REALLY well on tent ropes for tensioning them to the stakes, it also works really well for tying a small cord to the antenna wire to make it to where you can tie it off to something near the radio as well. If you look above at the photo of the front of the radio, you can see the other end of the cord tied to the top cover ring on my bed cover. This end of the cord is tied to the truck with a bowline knot so it can be undone easily when I finish the activation.
Below is the only photo I have ever been able to get of the wire itself and it actually show up in the photo well enough to be meaningful. I threw a line up into the tree and pulled this wire up about 25 feet off the ground with the throw line and it worked really well. I know this is really low for a wire this long, but I was frozen and in a hurry and didnt want to rethrow the line to try and get it higher in the tree. So I used what I had.
OK, so here is the part where I talk about the antenna that I used. This antenna is simply a random wire right at 41 feet long and the counter poise is 13’ long. These are technically not supposed to be resonant on any of the 4 bands I have in this radio, but as it turned out today, the antenna was almost perfect on the 40 meter band with it arranged near the truck body. (it was reacting capacitively with the truck as I could change the SWR by literally moving the counter poise closer or further from the truck. It would also change the resonance of the antenna too, so I used the internal tuner to be safe) I used this to my advantage and worked quite a few 40 meter contacts today. I also cut counter poise wires for the other three bands and plan to set them up and see what the nanoVNA says about them when I have time. Something else I have learned to do over time is to put the wire length flags on the wires. This is simply little pieces of paper with a large number written in sharpie on them and then taped on with a long piece of packing tape to basically laminate them into place. This makes it really easy to know which wires you have without having to guess. All of this wire is high flex, silicone insulated wire and is basically tangle free for the most part, where has this wire been all my life??? Turns out it was on Amazon all along…
Another item I have fallen in love with is these little Velcro cable straps, I don’t know why I didn’t get these sooner, but these things are a wonder of modern technology for wire management and keeping your gear organized. If you have never used them, I highly recommend grabbing a pack of them off of amazon, it will change your life!
So, since I had a way to wander off of 20 meters, wandered I did! I didnt get on 20 meters at all today. Today I stayed on the other three ham radio bands that I could get on and got 16 contacts in about 45 minutes even though it was super cold and I had the power, on the first two QSOs, turned down to 1 watt! Yes, ONE watt! Now, they are only a few hundred miles away to be fair, but still, it is a single solitary watt going the distance here! AA5JF was a little over 200 miles from me and he heard me really well if his signal report is accurate on that little single watt of RF power. The other person (W4EDN) was 265 miles away and I still got a good report. This just goes to show that you don’t need really big guns to have some fun with radio, it is something that even people who can only get small QRP kit rigs and build them can make some contacts. Now, would have I made more with more power? Of course I would, more people could have heard me and I am not contesting that. My point here is people seem to get it in their head that you need 100 watts to be able to have a QSO on HF, when it just ain’t true. Now, I cant speak of phone contacts here as I don’t do very much HF amateur radio on phone modes, I am almost exclusively a CW op…hence the love affair with the K1. So take all that with a grain of Morse code… Once I remembered I was running 1 watt, I noted it at the top of the log and turned up the power to 7 watts (I thoguht I would see how the signal reports changed with 7 times the output power and the log speaks for itself. The first report on each line is what I sent them and the second report is how they heard me. Once I moved to 17 meters I turned the little K1 to 5 watts and left it there for the rest of the activation.
It was easier for me to get some Park to Park QSOs today with the “hunt and pounce” method…but it was more like the “hunt and wait till they can hear me” method actually, all the joking aside, it worked and I got three parks in the log today because of it. I didn’t keep the activation going any longer as I had some chores to do as well as my feet and fingers were getting numb. Numb fingers and toes makes it hard to log and send decent code so I went QRT with 16 QSOs in the logbook for today. All in all, it was a successful trip with me testing all three of the other bands I don’t normally use and the random wire turned out to even be resonant on the 40 meter CW band somehow. What luck! Maybe future me will have written about how my trip to Hawaii was successful and you will see that blogpost in a couple of weeks once I have had time to write it. So till next time, go get your radio out and take it to a part or something.
K-2169 POTA Activation at the very foot of a MOUNTAIN - AAR
So the last two days have been really strange. I tried to activate K-2169 last night to see if I could pull off a late shift activation and it was a miserable failure, zero contacts in 30 minutes straight of sending CQ, literally no replies at all.
The night before when I literally got zero contacts.
I actually swapped out the radio for a spare (the IC-705), it showed activity in the waterfall but no one was able to hear me. I was on top of the mountain at this point too. So I packed up and came back home having had zero luck. You win some, you lose some…
The next day was different though. I only had about an hour to setup, activate and breakdown as we had “family activities” to do later. So I figured this was the chance to test another location I had been looking at for awhile now. The Sitton’s Gulch Trail Head is at the bottom of the canyon and the parking lot is literally buttressed against the bottom of the mountain proper.
To compound the problems, I didn’t want to put my radials out in the way of others if they wanted to park next to me as this lot tends to fill up pretty quick in nice weather. So I ran them both off to the drivers side of the truck to keep them out of the way.
Welcome to the literal foot of Lookout mountain.
One of the counter poise radials is actually draped over the corner of the truck but it didn’t seem to cause a problem with propagation from what I can tell. The mountain is on the south side of the parking lot proper so I figured I wouldn’t hear anything to the south at all, but I was surprised to see the map showing some stations on the dark side of the operation position, these guys must have incredible stations to hear my QRP signal into a compromised antenna with a literal mountain blocking our signals! My hat goes off to these guys!
The bulk of the contacts are from a predictable direction though, since Lookout mtn is part of the Appalachian mountain chain, most of the contacts are to the north east which is the direction that is clear of the mountain. It has a decent clearing to the west as well from this location as Sand mtn is about 2 miles away and it is fairly short too, only about 700 feet tall, so I was able to get out to Kansas and Minnesota pretty easy too. As you can see in the photos, I am in the forest surrounded by trees too, so I am happy with my little activation considering all the limitations imposed on it today.
The radio for today’s adventure is the Penntek TR-35 and the more I use it, the better I like it. The RIT is for CW sidetone adjustment. This was a trick I found in a forum post and thought it was really clever. If the other station is low on tone, turn the RIT down till they sound like you want, if they are high turn it up till they sound good to you, it works REALLY well and I wished I could remember the HAM that gave me this idea as I would credit them with it…if they do I will edit the post and add it here. I am running 5 watts on 20 meters today because I am using the “Truck-tenna” for the sake of time.
When I got on the air to start with, I was the only POTA station on 20 meters, and there was only one other when I went QRT an half hour later. The band was open too as the RBN (Reverse Beacon Network) was spotting me regularly.
Those are not outhouses in the photo. This area is home to a local cave system called Case Cave and those are changing rooms for the cavers when they come out of the cave. It is a really huge cave system and if you want to explore it, you need to contact the park and line up a time when someone with the key, will meet you and open it for you, it is locked to protect the uninitiated from getting themselves killed…
I am pretty sure I have not shown the counter poise weights on the wires really well yet. This is a simple system that works super well for keeping the radials extended and not having to drive in stakes to do it, I simply straighten the wire at the end when it is taught and walk away, it is that simple, the wire keeper is simply a piece of plastic with three holes drilled in it to thread the speaker wire through, it doesn’t slip at all. The weights run about 2 pounds or so and that seems to be plenty to keep a 16’ radial in place so far. I have not tried heavy winds yet, so the jury is out on that one.
Not sure what is going on here, this is the hiking trail and just below the camera is a huge gate across the road… lol. I thought it was funny with the irony of it being in a spot where you literally cant park. Maybe it is from a time when you could drive up the trail to the cave? I don’t know…
If you enjoy the blog I would appreciate a like and a comment if you have one. Thank you for your time and get out there and warm up the ionosphere!
72
David
WK4DS