Category Archives: Guest Posts

Guest Posts, News

VA3EKR’s Experiments in Capturing Clean Audio in the Field

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Many thanks to Scott (VA3EKR) who shares the following guest post which was originally posted on his blog:

Mar. 29, 2025, Troubleshooting Audio Capture with Voice Recorder

by Scott (VA3EKR)

When I activate a park for POTA, I always use HAMRS, running on a tablet as I get better battery life than a laptop, and I confess I still like the confirmation from QRZ that you have the correct contact, or that it at least matches the state you think it is. Still, sometimes I do not have internet connectivity, and additionally, I often neglect to put in the proper RST of the QSO in the fields (POTA doesn’t actually require it), as the tablet is not terrific about hopping between fields.

A nice solution to this is audio capture, where I can fix a broken call sign, fix the RST before submitting to QRZ/LOTW. I am too self-conscious to video myself, so I use an audio recorder. It is pictured below. It was only about CAD $100, and has a nice line-in and a line-out so that I can record while I listen.

Next to the recorder is a toroid I had as extra when I made a transformer last summer, and a relatively long audio cable that I coiled as many times as I could around the toroid.

This is an example of the audio quality before troubleshooting the problem. Just the first few seconds demonstrate the issue.

Audio Player

The received audio is reasonable, and it is when I am sending that the problem shows itself. It was unclear what the problem was, perhaps one of:

  1. Bad audio levels, either the gain on the recorder, or the monitor level of the KX2.
  2. Stray RF being coming back from the antenna on transmission
  3. The audio input cable acting as an antenna picking up transmission

I did not think it was bad audio levels, as I had done some playing-about, though not in a terribly rigorous fashion. The stray RF was my largest suspicion, as I had only started noticing the problem when I started using a Ham Stick in my car during the winter months. Inside the car, there are a series of LEDs on the transmission shifter that indicate what gear the car presently is engaged. I noticed that when I transmit, the “drive” LED flickered a LOT, and this worried me. I had not bothered to ground the HamStick to the car chassis, but did run a 17-foot counterpoise that I clipped to the antenna shield, and I hoped this would be sufficient. As corroboration, I have been able to hit France, Spain, Norway, Oregon and Idaho with the setup.

After a very chilly and rainy day at the horse barn, I was tempted to do an activation, but I decided to stay in the warm house and do some experimentation. I set up in the living room with my AlexLoop that I got in Dayton last year. This gave me the opportunity to try another configuration, and see if the audio was the same as when using the Ham Stick in the car. Indeed it was.

I tuned the loop for maximum noise on 20m, and tuned with the internal ATU of the KX2. I found a POTA activation in North Carolina, and he gave me a 599 with 5 W! I love getting surprising performance with obviously bad operating conditions, like from the interior of a brick house! And the antenna was oriented for east-west, not south! But the audio was still terrible when transmitting.

I spent some more time adjusting the monitor level, and recorder gain. Still nothing sounded good.

I next wanted to see if perhaps the common-mode current was the issue, so I used a LDG 1:1 UnUn, shown below. I was really hoping it was not this, since when you add the BNC connectors and the additional cable, the added size is about the size of a KH1!

After putting the transformer in line with the antenna, the audio was not appreciably different.

The last experiment, corresponding with the last theory, was to put in an audio cable that had better shielding from HF.

This seemed to really do the trick! Here’s the resulting audio with a QSO to North Carolina from inside my living room. There is an initial try at the beginning, and then another successful QSO at the 1:17 mark.

Audio Player

I hope that if anyone else encounters similar issues recording from their radio, that this might prove useful.

Field Reports, Guest Posts, News, Portable, POTA, QRP, Travel

QSO Party, POTA, and a Touch of Winter: Bob and Alanna’s Radio Adventures on the Outer Banks

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Radio Adventures on the Outer Banks of North Carolina

by Bob K4RLC & Alanna K4AAC     

February 2025

My YL Alanna K4AAC had been advocating for a trip to the Outer Banks of North Carolina for some time. She had never been there to see its incredible natural beauty, and I had not been in decades. In planning, we needed to go in the off-season, especially when it was a bit chilly, as she is a “bug magnet” and that can ruin her vacation. Not being totally unselfish, I wanted our visit to coincide with a radio event.

We first tried for Winter Field Day at the end of January, but Eastern North Carolina was socked in with five to seven inches of snow in places where it never snows. We rescheduled the trip for a month later at the end of February, to coincide with the North Carolina QSO Party. Just so happens, Eastern North Carolina got another freak snowstorm of several inches, but we only had to put the trip off one day. Even then, parts of the roads going down east were still covered in snow and ice.

1585 Map by Governor White
Current Map of Outer Banks

The drive is only a bit over 3 hours straight down US Highway 64 to the Outer Banks, where it dead ends in a T intersection with infamous North Carolina Hwy 12. Locals call the intersection “Whalebone Junction.” Going either north or south of this intersection, within a few miles one can explore lots of really beautiful natural areas, including six (6) POTA sites! Eight miles south of the intersection is the Oregon Inlet Campground on Bodie Island, part of the Cape Hatteras National Seashore (US-0682), where we camped. That time of year, the campground was really deserted with only a few other campers including a few brave souls tent camping. It is a flat area campground that backs up to huge dunes, separating you from some of the most beautiful but austere beaches on the Atlantic coast. A word of caution though, there are no trees or light poles to secure a mast for an antenna.

Alanna K4AAC enjoying the beach
Antenna at Oregon Inlet Campground

We took our Winnebago Solis again. The Solis is a wonderful camper van on a Dodge ProMaster chassis that sleeps three, has a propane powered furnace and two burner stove, and a refrigerator that can be powered either by propane or by the 140 W solar panels on top of the van, loading up two 100 amp hour AGM batteries.  You can boondock for days, or enjoy the luxury of “shore power.”

As the North Carolina QSO Party was Sunday, we wanted to explore the islands Saturday. About 20 miles north of the campground is the incredible Wright Brothers National Memorial, commemorating the first flight ever, and also POTA site: US-0797.  This is part of the National Park Service, on 428 acres with an interactive Visitor Center whose exhibits include a full-scale reproduction of the Wright Brothers 1903 flyer. We particularly enjoyed climbing to the Wright Brothers Monument standing 60-feet tall atop Kill Devil’s Hill, a 90 foot high grass-stabilized sand dune. The original runway is there with First Flight Boulder and Markers charting the short distances of the first four flights. Incredibly, a few yards over and parallel is an actual 3000 foot First Flight Airstrip where pilots from all over the world fly in to celebrate their flying heritage. I decided to take the KH1 up to the top of the Monument, a steep but accessible walk for almost anyone. The day was clear and sunny; the white granite monument was gleaming against the Carolina blue sky.

Wright Brothers Monument
Bob K4RLC & Elecraft KH1 w/AX1

It was a beautiful day to set up on the wall around the monument. Unfortunately, the temperatures were in the 40’s, and I didn’t realize there would be a 20-25 knot wind blowing. The beautiful thing about the KH1 is that it is so easy to deploy. Some have complained about the stock key in cold weather, but for me the problems are not the key but old, cold fingers. To help a little bit, I set up the AX1 on a small camera tripod and threw one 13 ft radial over the wall into the field. This modification worked really well when I operated at a Greek Navy lighthouse in the Aegean Sea. For some reason, the KH1 was fussy that day, and would not hold a tune consistently on 20 CW. Nevertheless, I pounded away until I got the minimum number of contacts about the same time my fingers just wouldn’t work anymore.

Alanna, with freezing extremities after fully exploring the monument and taking pictures of me operating, hiked off to explore a bronze sculpture garden which recreates the scene of the historic 1903 flight. This included a sandy plot with a life-size bronze replica of the original Wright Brothers airplane (being piloted by Orville laying on his stomach), along with bronze sculptures depicting the guys from the Hatteras Life Saving Station who were there to support Orville and Wilbur, help them launch their flyer, and capture a photo of the First Flight. The memorial was gifted by the State of North Carolina to the NPS,  and dedicated at the Centennial of the First Flight in 2003, by then Governor Mike Easley. Alanna and I were both really cold and tired after hiking in the chilly weather at the park, so we sought out one of the few open seafood restaurants there and were treated to an incredibly tasty buffet.

Full size replica of original aircraft
Full size bronze replica of aircraft

Weather Sunday morning was milder so with a strong cup of coffee from the French press coffee maker our daughter gave us, I set up on the picnic table with my trusty old ICOM IC – 706MkIIG at about 60 watts on 20 CW. I do have a trailer hitch mount for the Solis that can hold a 30 foot fiberglass mast, but I knew we were going to be traveling that day. So I set up my trustee default of a 17 foot whip on a 4 x 7′ piece of aluminum screen wire from Lowe’s. With one CQ, the calls started coming in, with the first one being from HA9RE in Hungary. Continue reading QSO Party, POTA, and a Touch of Winter: Bob and Alanna’s Radio Adventures on the Outer Banks →

Field Reports, Guest Posts, News, Portable, POTA

Christian’s 100th POTA Activation at Tsatelet Nature Reserve

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My 100th POTA Activation at the Place It All Began

by Christian (IX1CKN)

Mathematics is a finite science. So, for a while, I knew that my 100th POTA activation was coming. The only thing left was to decide how to organize and experience it. Initially, I considered activating a new reference (paradoxically, I still have quite a few left to do in Valle d’Aosta). However, with snow covering everything above 1500–1600 meters, I reconsidered my plan.

In the end, I asked myself—what’s the beauty of this program? It’s in the experiences it awards. From discovering forgotten places or ones you’ve never visited to the strong sense of community among participants—friends who, even on your 20th activation at the same park, are still happy to log you. So, I thought it was only natural that this activation would be from IT-0120, the Tsatelet Nature Reserve. It’s the closest to home, the place where I’ve learned the most about field operating, and also where it all began for me (back in November 2022).

I started early in the morning of Sunday 9th March 2025, following my wife’s advice (she knows me too well): “Have breakfast at McDonald’s”—because while she may not like their burgers, those croissants and coffee do make sense.

It was just after sunrise, but not too cold—3°C in the air suggested that once I reached the reserve, I wouldn’t be freezing. And so it was when I arrived at about 800 meters, on the promontory between Aosta and Saint-Christophe.

I decided to take things slow and fully appreciate the memories that these two years of POTA have given me.

I had my G90, a 15Ah battery (thankfully, the hike wasn’t endless, and my back thanked me), and a 40m half-wave end-fed antenna (by Ricky IU1PZC). I didn’t bring my vertical—I wanted nearby Italian operators to have a better chance of making contact.

I started on 7 MHz at 08:32 local time. The band was responsive, and by the time I switched to 20m, I already had over 30 QSOs in the log. 20 meters weren’t performing as usual, likely due to the K-index at 5, which signaled less-than-ideal propagation. It came in waves, though—not entirely bad. In one of these, I logged Don G0RQL. As strong as ever, he told me, “I wish I had logged you all 100 times, but I was there for quite a few of them”.

He was right—if I had to guess, I’d say at least 30–40 times. Funny enough, I saw his QTH in Devonshire on vacation before I even joined the POTA family. The band continued its ups and downs, but I logged several park-to-park contacts, including an eclectic group from IT-0135 (I ended up logging three of them). Shoutout to Austrian colleagues OE3BIY, OE4JHW, and OE4ENU, who were even live on YouTube.

I also took the time to enjoy the scenery and the moment—especially when a lively group of Scouts arrived. After all, this is their place, and I’m the guest. Tsatelet is known as Quota BP, named after Sir Baden-Powell, the founder of Scouting, who is honored with a plaque in the reserve.

Back on 40m, I managed a somewhat challenging QSO with Dario IZ3QFG (sadly, no luck with Andrea IW0HK today). But something special happened—I heard a female voice calling me, and I almost couldn’t believe my ears: Helga IN3FHE, had picked up the microphone again. She said, “I know you’re having fun, but this morning, have the most fun, okay?” Mission accomplished! You can’t hear hugs on the radio, but I swear today’s felt real.

Back on 20m, the conditions remained unpredictable, but the QSO flow continued. I logged several French stations (mainly from the north), two new YL hunters (one in Wales, the other in England), and a mobile operator in Richmond Park, London—we had a laugh about how it’s Mick Jagger’s neighborhood (another “Sir”…).

A couple of local IX1 stations called in—there aren’t many of us with this prefix, but we do exist, and sometimes there’s more than just two of us in HF at the same time! Looking at my log pages, I suspected this might be one of my most productive activations ever—but in that moment, the numbers didn’t matter. I kept going because the thrill was in communicating, answering, and finding other people out in the middle of nowhere with just a radio and an antenna, sometimes barely holding together.

Spanish stations stood out—some of them are regulars in my log (EA2DT, EA5W, EA2CPG, EA6FM, and many others), and they always have a strong presence. Their enthusiasm is infectious, and they always deserve the “abrazo” and “suerte” that close every QSO with them. 15m wasn’t too promising, but on 10m, some stations from the South America contest came through. I called them, skeptical about my 15 watts, but I still logged two Brazilians, one Argentinian, and two Turkish stations. There it was—the DX!

At 12:03 local time, after 3 hours and 31 minutes, I had relived practically all the highlights of my time as an operator. It was enough—but what a fantastic activation. I packed up, hiked down, and headed home.

Then came the logbook surprise:

  • 136 QSOs
  • 21 park-to-park contacts
  • ODX: LT3E (Argentina) at 11,454 km—a new personal best from Tsatelet! (My previous record was 135 QSOs.)

If someone had asked me how I wanted my 100th activation to be, my answer wouldn’t have been far from this.

Now, onwards to the next 100! But not before saying thank you to everyone who makes this program so special.

Chris Diemoz

IX1CKN

Field Reports, Guest Posts, Morse Code, News, Portable, POTA, QRP, Travel

POTA, Landmarks, and Unexpected Wonders: Brian, Becky, and Molly’s Journey Home

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Activating on the Road:  Gems Along the Way – Part 2

by Brian (K3ES)

Welcome to Pennsylvania, the Land of Road Construction!

This article continues my series from our 2024 road trip across the United States (Six Weeks and 7300 Miles:  Activating on the Road).  I hope to wrap up the series with one or two more articles (not yet written) over the next few weeks.  In this report, I plan to cover some of the parks and places we found during the trip that were interesting and spectacular beyond our expectations.

As we traveled across the country from Pennsylvania to California and back, we spent a lot of time looking for parks to activate, and sights to see.  While we tried to keep the sights and parks interesting, some of them were unexpectedly amazing, and I would like to share a few of those here.  Part 2 covers our east-bound trip homeward to Pennsylvania.

Tehachapi Loop, CA

Historical Marker for the Tehachapi Loop.

The Tehachapi Loop is a railroad wonder constructed from 1874 to 1876 to ease the grade for the Southern Pacific rail line, as it crosses over Tehachapi Pass.  The Loop is located on the western side of the pass, near Bakersfield, CA, and it consists of a helical track section that enables the head of the train to pass over the trailing end as it moves up the grade.  This is, of course, reversed for a train headed down the hill.  Through the ¾ mile loop, the train gains or loses 77 ft of elevation, and the loop’s extra distance along the grade permits the train to ascend or descend a more gradual slope.

On the first day of the homeward leg of our journey, we drove away from the main travel route to stop at an overlook that gave a great view of the Tehachapi Loop.  The Loop is not a POTA entity, so I made no attempt to activate it.  Thankfully, an east-bound Union Pacific mixed-freight train came along for its own type of activation.  As a railroad buff, married into a railroad family, I greatly appreciated watching the loop in action.  If you are ever in the area, it is well worth a short detour away from California Route 58 to see this iconic railroad engineering marvel.

Winslow, AZ

One of the high points of the entire trip for Becky was a chance to stop in Winslow, AZ.  Becky is a fan of music, almost any type of music, but the music of her youth really gets her toes tapping.  So, being the one standin’ on the corner in Winslow, Arizona was really meaningful for her.  She loves the Eagles, and can sing along with Take It Easy without missing a beat.  Of all the places we went, things we saw, and memories we made on this trip, Winslow, Arizona will always hold a special place in her heart.  Sadly, like the Tehachapi Loop, this particular corner is not a POTA entity.

Becky is standing on the corner with the “troubadour” statue, which resembles Jackson Browne.
Becky with Glenn Frey.
Take it Easy.

Fort Union NM, NM

The first facilities at Fort Union National Monument (US-0933) were built in 1851, following the annexation of New Mexico by the United States after the Mexican-American War.  Rough log structures housed and defended the troops and supplies for protecting the Santa Fe Trail.  Over the years, the facility became increasingly important as a regional transportation hub and supply base for United States Army troops.

Early in the Civil War, Fort Union was moved to a occupy a commanding hill top, and rebuilt as a star-shaped earthen structure to make it defensible against troops with longer-range arms and artillery.  It was hoped that this would allow the fort to better defend against Confederate Forces moving into New Mexico.  Before the fort’s defenses could be tested, the attacking Confederate army was defeated and turned back by Union troops at the Battle of Glorieta Pass, so they never reached Fort Union.

This Civil War-era artillery piece now guards the Visitor Center at US-0933.

The fort was rebuilt again by 1869, incorporating a large complex of adobe brick structures.  The Fort Union garrison’s responsibility to protect the Santa Fe Trail involved escorting traffic along the trail during periods of conflict with Native American tribes.  As the Atchison, Topeka and Santa Fe railroad was expanded across the southwest, the mission to protect the Santa Fe Trail became less and less important.  Fort Union was finally abandoned in 1891, until its preservation as a National Monument in the early 1950s.

Jails are usually stoutly constructed.  The post guardhouse has withstood many of the ravages of time.

The visitor center has great information about the history and significance of Fort Union, along with a gift shop.  Becky and I took turns exploring the visitor center, as one of us needed to stay outside with Molly.  The site itself is beautiful, with well-interpreted layout and ruins from the 3rd Fort Union.  You can see the remains of officer quarters, troop barracks, stables, a large hospital, and associated facilities.  If you are ever in the area, the Fort Union National Monument is well worth visiting. Continue reading POTA, Landmarks, and Unexpected Wonders: Brian, Becky, and Molly’s Journey Home →

Field Reports, Guest Posts, News, Portable, POTA, QRP, Travel

QRP by the Sea: Dan’s POTA Rove Along the Oregon Coast

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Oregon Coast POTA Rove

by Dan (N7CQR)

Last December (2024), I was planning a trip with friends to Tucson, AZ, while my wife was traveling abroad. I enjoy the opportunity to go somewhere warm during the winter if possible. Alas, the trip fell apart, and I decided to take the opportunity to spend a week traveling on the Oregon coast and activating as many parks as possible. My plan was to start on the central coast around Newport and travel as far south as time permitted. Sometimes we get a nice stretch of warmer weather in this region in December and January. The coast is blessed with many small and medium-sized state parks, and many are oceanside, so I would have plenty of options for daily activities within a relatively short distance from where I would be staying.

I picked four towns to stay at as I drove south: Yachats, Coos Bay, Bandon, and returning north to Newport. I compiled a list of about 25 potential POTA sites between Newport and Bandon on the southern end of my route. Obviously, I wouldn’t be likely to activate all of these for various reasons such as temporary closures, weather conditions (especially as related to exposure to rain or wind—very common on the coast), access to a good area to set up, or other unforeseen circumstances. And there’s always variable propagation to deal with.

Here on the West Coast, we just don’t have the population density and thus fewer active hams than the rest of the country. My goal was to activate three parks per day. Sometimes it was a very short distance to do this, but often I had to drive a fair amount to get to some of the more remote locations.

The other challenge was planning what gear to bring, as I might be operating in a couple of different conditions depending on the weather. Ideally, I wanted to set up outdoors when possible, but realistically, I had to have a plan for also operating in my car. Since I’m a dedicated portable CW/QRP operator, I don’t have any permanent radios or antennas mounted in my car.

My two main portable radios are my KX2 and KH1, which are small enough to use in the car without taking up a lot of space. For an antenna, I had a Diamond K400 door/hatch mount that I mounted on the rear hatch of my Kia Sorento, and I had a telescoping whip that would extend to a quarter wavelength on 20 meters and could be adjusted for 17, 15, and 10 meters depending on which band I was using. I had to get an adapter (McMaster Carr hardware) from the 3/8×24 thread of the mount to the M10 metric thread of the whip.

The tuner in the radios would make up any mismatch. I ran RG 316 to the front seat and attached a couple of 13-foot counterpoises to the antenna mount for good measure. The mount was grounded to the car body through the mounting bracket as well. I almost always got a very good match, so SWR wasn’t a problem, especially since I only ran 5 watts.

For outdoor operation, I had the KH1 with the whip, the KX2 with the AX1/AEX1, my Chelegance MC-750 vertical, and my K6ARK end-fed random wire with the 9:1 balun built into the BNC connector.

Here, particularly in western and coastal Oregon, we have an abundance of trees, but they’re often Douglas Fir with very thick foliage that makes it tricky to toss a line into a tree. Especially at the coast, it’s often quite steep and rocky, such that you don’t have a long stretch of level ground to toss and retrieve a line. Or, if it’s an open wayside, there might not be any trees close by to use. Options are always a good idea.

Shore Acres State Park (US-2581)

When I had to activate from my car, I found that using the KH1 was easier than wrestling with the KX2 on my lap or the console, especially for CW. I could hold it in my hand and log using the tray with the little log sheets. However, I know there are some good solutions for using trays or shelves that mount in the vehicle for larger radios. Still, most of my operating is outdoors whenever possible.

As expected, sometimes I’d arrive at a park and encounter situations that made it difficult to activate. In a couple of cases, the parks (actually more like small waysides off the highway—usually on the coastal side) were closed due to maintenance issues or, in a couple of cases, flooding.  Continue reading QRP by the Sea: Dan’s POTA Rove Along the Oregon Coast →

Field Reports, Guest Posts, News, Portable, POTA, QRP, Travel

Activating on the Road:  Gems Along the Way – Part 1

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Activating on the Road:  Gems Along the Way – Part 1

by Brian (K3ES)

This two-part article continues my series from our 2024 road trip across the United States (Six Weeks and 7300 Miles:  Activating on the Road).  I hope to wrap up the series with one or two more articles (not yet written) over the next few weeks.  In this report, I plan to cover some of the parks and places we found during the trip that were interesting and spectacular beyond our expectations.

As we traveled across the country from Pennsylvania to California and back, we spent a lot of time looking for parks to activate, and sights to see.  While we tried to keep the sights and parks interesting, some of them were unexpectedly amazing, and I would like to share a few of those here.  Part 1 covers our westward trip from Pennsylvania to California.

Moraine View SRA, IL

Since I had already activated parks in Ohio and Indiana, we planned to do our first activation of the trip in Illinois.  To be honest, we chose Moraine View State Recreation Area (US-2311) as our Illinois park, because it was at the right place and the right time.  We had committed to arrive at my niece’s home in Minnesota at the end of our third travel day.  To stay on schedule for this, I needed to complete two activations (Illinois and Iowa), along with ending the the second day’s travel in Prarie du Chien, WI.  We picked US-2311 as the park for Illinois, because it was close to our travel route, and at the right distance from home for our first day’s drive.  That way I could do an early morning activation and be on the road quickly.

Activating US-2311 from a picnic table.  The perforated table top provide a perfect method to hold the collapsible fishing pole that I used to support my antenna.

Choosing a park based on proximity to the travel route might seem like a poor way to find spectacular parks for activating, but that does not account for having Becky engaged in the process.  In this case, she picked our first gem of the trip.  I set up in a shady picnic area to activate, while she and Molly took a walk along the lake that is the centerpiece of the Recreation Area.  They found beautiful views and some spectacular birds.  I finished the CW QRP activation in about an hour, with 11 contacts split between the 40m and 20m bands.  It turned out that six of the contacts were with activators working in other parks, and one of those activators was working from a 2-fer location, so I got credit for 12 contacts in total.  Following the activation, I packed up, and we headed out toward Iowa and our second activation of the day.

Becky captured this picture of the glassy-smooth lake.  Beautiful.
Molly posed for a picture during her walk beside the lake.
This Great Blue Heron was looking for breakfast.
Map of CW contacts from US-2311.

Great Salt Lake SP, UT

The Great Salt Lake is one of the state’s best known geographic features, so it was natural to look for a park near the lake as we planned for an activation in Utah.  Great Salt Lake State Park (US-3075), on the southern tip of the lake, seemed like a good choice.    We had no idea what a GREAT choice it would be.  Stopping at the park was also convenient for eating our lunch, since we would arrive there mid-day.  US-3075 has scenic views of the lake and surrounding mountains, a marina for pleasure boats that sail the lake, beaches for swimming, and it had at least one unoccupied, shaded picnic table that worked well for activating. Continue reading Activating on the Road:  Gems Along the Way – Part 1 →

Field Reports, Guest Posts, News, Pedestrian Mobile, Portable, POTA, QRP

The Power of Elevation: Scott’s POTA Experiment

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Texas Tower of Power

by Scott (WE5J)

February 14, Valentine’s Day. I’m off work a bit early, so what else better to do than slip off for a POTA activation! I had high hopes of making it to the park, but had to wait on the delivery service to drop off a work package so I could complete my tasks for the day. As luck would have it, they delivered just before 1pm then I was off to my client’s office then headed to Sheldon Lake State Park, US-3056.

(Photo credit: Texas Parks and Wildlife/Wikipedia)

I’ve activated here a few times, most recently at the top of the John Jacob observation tower. The tower overlooks the park, Houston skyline, and the San Jacinto monument from a height of 82 feet above ground. Four days prior, on the top platform using a KH1 with the stock whip and counterpoise dropped between floorboards.  The results were amazing! I expected the activation would be okay, but 12 contacts in 18min is one of my fastest activations!

The KH1 is a 5 watt output transceiver at best, with a compromised antenna. No, it wasn’t power or a fancy antenna.  This caused the hamsters to start spinning the wheels; why was this so successful? Propagation? Elevated radial? Height over terrain? It’s time to test!

Fast forward 4 days, I’m back atop the Tower of Power! This activation was planned to start at the top platform to, (a) get at least 10 contacts for a valid activation then (b) move to ground level to continue.  Nothing like a little a/b pseudo-scientific testing to spice up an activation!

Unfortunately, it was (a.5) and (b) testing; a group was setting up for a surprise marriage proposal on the top platform, to give them space and be respectful I moved down to the middle level. I estimate this is 40’ above surrounding terrain which is still significant in Houston.  As per the last activation, set up on the west side, drop the counterpoise wire (~20’) through the floorboards, and start calling CQ on 20m.

Two cycles of CQ and a Katy bar the door! 12 contacts in 13 minutes, the majority of RST’s 559 or 599. It was a madhouse! No major pileup, but the hunters just kept coming. I wanted to stay in the tower but was running short on time, during a lull I called QRT to move down to ground level.

Once on ground level about 400 yards from the tower, I respotted and started calling CQ. After about 5 minutes the first hunter was a nice surprise from Alabama, not a common state for me. No follow-on callers, so I called CQ again. And again. And again. After roughly 10 more minutes, a fine gentleman from Kansas called. I resumed a few more minutes of calling CQ before going QRT for the day.

While on the ground level, I moved to different locations within the picnic area, tried elevating the radial, holding the radio straight up or a 45* angle, all with no noticeable change in RBN spots or hunter activity. It was painfully obvious that ground level in Houston is not the most conducive for QRP plus a small, compromised antenna.

It was a great day to be out, great to play radio, and it was even more fun to scratch that scientific itch! I can say emphatically, without a doubt, height is might with QRP especially if you live in a low and flat elevation like Houston.

Now that I think a bit, more questions come to mind!  Was the tower acting as some sort of reflector? Will it make a difference if I move to the Eastern platform? Is there another all-wood platform I can try? Looks like we have more testing to do!

Y’all be good! 72!

Scott (WE5J)

P.S. – If you drop a mechanical pencil from 30’ on to a hard surface, all your lead will shatter. Rendering the pencil useless. EDC Mini-Space Pen to the rescue!

Field Reports, Guest Posts, News, Portable, POTA, QRP, Travel

The Fun Continues for the POTA Babe

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By KO4WFP

Note: This is the fourth article for my trip to southwest Georgia at the beginning of January 2025. If you didn’t read the previous article, it is available here: Doerun Pitcher Plant Bog WMA

January 5th, Daisy and I hit the road again for one more POTA activation toward my goal of activating 30 new parks in 2025. The trip to southwest Georgia, though cut short, was productive in that I had three successful activations, I worked through the obstacles I encountered, and I got the break from my obligations and responsibilities I needed.

There are still quite a few parks on the eastern side of Georgia I have yet to activate. As I had no time constraints today, I picked a park close to the Georgia – Florida border: Ceylon Wildlife Management Area (US-9772), an hour and a half drive from my home.

source: Google Maps

Ceylon WMA parcel map     source: https://georgiawildlife.com/ceylon-wma

What I didn’t realize until I began researching and writing this article is just how significant this park is. It is the newest wildlife management area (WMA) in the state of Georgia and 24,000 acres in size. It not only has environmental significance but is also important for national security reasons. The Naval Submarine Base Kings Bay is the home port of the U.S. Atlantic Fleet’s ballistic missile submarines and adjacent to this property. Keeping this land out of the hands of resort, residential, and commercial interests protected the fleets access to the Atlantic via the Satilla River.

Image from Submarine Group Ten      source: New Georgia Encyclopedia

The property is named after Ceylon Mill Village, a town established on the site 1874 for the purpose of processing timber. The town “was named for the Southeastern Asia country (current-day Sri Lanka, then British Ceylon) where tea was grown and shipped to the world.”

The town is long since gone and today it is wildlife that occupies the land, including the gopher tortoise, Georgia’s state reptile. This WMA has one of the highest densities of gopher tortoises, somewhere between 3,000 and 4,000, in all of Georgia.  I came across one of their burrows while looking at the pre-bellum and antebellum graveyard on the property.

gopher tortoise burrow at the base of a gravestone
antebellum grave
postbellum grave

The park is a short drive from Interstate 95 though the signage and entrance is not as readily visible as many WMAs. After passing the information kiosk, I began looking for a site not so heavily wooded. There was evidence of controlled burns and management for the cultivation of longleaf pines on the land. Longleaf pines are an important species in the southeast, one that is in decline due to centuries of logging. (I wrote about the importance of this habitat in my article on my activation at Oliver Bridge WMA.)

entrance area with information kiosk
controlled burn area
young longleaf pine taking advantage of the open canopy
the open road begging to be explored!

I found a cleared area and pulled off the side of the road next to a downed tree. The tree would serve as my seating area and Daisy could lay down in the shade it provided. Though the temperatures were still chilly, the cloudless and sunny skies over head would certainly overheat anyone laying around in a fur coat.

my parking spot
napping in the shade from the fallen tree

I had the EFRW installed in short order, oriented it to the northwest, settled on the trunk, and got down to business.

getting “comfy” on my woody QTH

I stuck with 20 meters for most of the activation. That band gave me 37 QSOs in an hour. After some hunting, I worked 11 contacts on 15 meters and three contacts on 40 meters before calling QRT. (Look at the contact waaaayyy out west in California.)

Even though I had good cell service and internet access at this site, I was not successful in hunting many activators due to the band conditions. I had three park-to-park (P2P) QSOs – Rod K4DSX, Jeffrey WJ3FF, and Marshall K1SN but ended up with credit for 10 P2P QSOs. Rod was a three-fer, Jeffrey was a two-fer, and Marshall was a five-fer! (Is there such a word?)

Ceylon Wildlife Management Area POTA QSO Map 1-5-2025

This is a park to which I plan to return. Ceylon WMA is easy to access; there is more territory in it begging to be explored;  and I have cell service to spot myself and hunt other activators. With this successful activation, I now have four activations toward my goal of 30 for 2025 and 26 yet to go. Where will my next POTA adventure take place? Stay tuned…

Equipment Used

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Field Reports, Guest Posts, News, Portable, POTA, QRP, Travel, Videos

Challenges for the POTA Babe

9 Comments
By KO4WFP

Note: This is the third article for my trip to southwest Georgia at the beginning of January 2025. If you didn’t read the previous article, it is available here: Chickasawhatchee WMA (US-3739)

In POTA and camping, one may plan and prepare; but no matter how much of that one does, there are invariably challenges that arise pushing you out of your comfort zone. Challenges put one into what I call “ham radio mode”. You know what ham radio mode is, right? You evaluate a situation, assess your available resources to address the problem, and implement a solution with those resources. The trip to southwest Georgia presented several unexpected challenges.

The first unexpected challenge was that of my keys. I brought two paddles – the VK3IL design paddle and the mini palm paddle. Upon plugging it in, the VK3IL would only send dahs. So I defaulted to my backup, the mini palm. However, something was wrong with the connector on the back as randomly, the dit paddle would stop working. Ugh! After my first activation, I used my CW Morse straight key which I brought along because of Straight Key Night on January 1st. I hadn’t used a straight key for POTA in ages and, though a little challenging at first, it was a good change of pace.

CW Morse straight key

The second unexpected event was the soles of my old riding boots peeling back from the boots themselves. This happened as I was packing up my equipment at Chickasawhatchee. Thankfully, I found a Family Dollar store on the way back to Kolomoki Mounds State Park, purchased some JB Weld glue, and repaired them Thursday evening while sitting by the campfire.

boot sole coming off

The third unexpected event (don’t such things often come in threes?) were the cold temperatures at night. I did check the weather forecast before departing Savannah. However, it’s been nearly thirty years since I’ve camped in 30 degree weather and the weeks leading up to the trip had been unseasonably warm – highs in the 70s and lows in the mid 50s. So while I knew intellectually that it would be cold, I wasn’t thinking from an experiential perspective.

The first night I couldn’t get comfortably warm despite having a Northface sleeping bag (rated for 25/40 degrees) and a SeatoSummit Thermolite Reactor Extreme liner. I also threw on top of Daisy and I (she had a sleeping pad and bag of her own), a survival blanket I keep in the car for emergencies.

Late into the first night, I remembered a moving quilt/blanket also in Kai’s trunk for emergencies. I was too cold to retrieve it from the car that night. But for the second night, I laid it on the floor of the tent under Daisy and then wrapped it over both of us. Though the situation that night was better than the first, I was still not comfortably warm. (This is why winter is my least favorite season – I spend all winter trying to keep my hands and feet warm.)

frost on the hood of my car

While I disliked throwing in the towel, I also didn’t want to suffer through two more nights of frigid weather. I tried to remember that the goal has to serve me and not the other way around.

a stinkbug at the campsite – look at the pattern and coloration on it!

After tearing down camp and packing the car, Daisy and I headed northeast back home with a planned stop at Doerun Pitcher Plant Bog Wildlife Management Area (US-7882). It is a relatively small WMA – only 600 acres. The land was purchased in 1994 from a family estate and named for the pitcher plants found on site.

source: Google Maps

Pitcher plants are carnivorous plants. According to Wikipedia, they have a “deep cavity filled with digestive liquid” in which insects are trapped and drown. There are over 100 species of carnivorous plants worldwide and three New World (North and South America) genus including sarracenia which are found at this WMA. The three species one can view at this park are the yellow pitcher plant (sarracenia flava), hooded pitcher plant (sarracenia minor), and the parrot pitcher plant (sarracenia psittacina).

yellow pitcher plants
hooded pitcher plants – Photo by David McAdoo, Source: https://plants.ces.ncsu.edu/plants/sarracenia-minor/

I was able to view all three species though they were not in their prime due to the cold temperatures.

This WMA is easily spotted from the road. It is a short drive into the property where one encounters a kiosk and trail to the pitcher plant bog. As there was no one present and no power lines in the parking lot, I decided to set up here for my activation.

entrance to the park

On the edge of the parking lot was a pine tree with branches low enough to reach with my arbor line. There were plenty of parking spaces to the left of my car so there was no issue running my antenna northwest across the lot. That enabled Daisy and I to sit in the sun (again, it was chilly in the shade here) and see anyone approaching in case I did need to move my antenna. I installed the Tufteln EFRW easily and readied myself to get on the air.

our QTH – Daisy is snoozing in the sun!

Unfortunately, I did not have sufficient cell service to access the POTA site at this park. I texted Glenn and he spotted me on 14.058. As I had a four-hour drive ahead of me, this was a park at which I would not linger so sticking to one band would have to suffice.

Twenty meters did not disappoint. In fifty minutes, I had 23 contacts, many of whom I knew – Steve N2YLO, Todd W2TEF, Ed KN9V, Brian K3ES, Eric WZ5MM, Rick K8BMA, and Bob AC9MG. Though the POTA exchange may be short and not challenging, I always enjoy seeing ops I know on the air during an activation. It puts a smile on my face. (I just wish I could knew and remember everyone’s name. I sent the wrong name to Carlos AE2W – sorry about that!)

QSO Map for Doerun Pitcher Plant Bog WMA 1-3-2025

With this park successfully activated, it was time to head home to Savannah. The other parks I had hoped to activate during this trip – Kolomoki Mounds State Park, Eufaula National Wildlife Refuge, Lake Walter F. George WMA, Silver Lake State Fishing Lake, and/or Lake Seminole WMA – would have to wait for another trip.

But that isn’t the end. Just like Ginsu knives, there is more! As I had set aside Sunday for this trip, I resolved to find a park near Savannah to activate that day. What park would I pick? Stay tuned…

Equipment Used

[Note: All Amazon, CW Morse, ABR, Chelegance, eBay, and Radioddity links are affiliate links that support QRPer.com at no cost to you.]

Guest Posts, News, QRP

Bob Tests the (tr)uSDX at Low Voltage

20 Comments

Many thanks to Bob (K7ZB), who shares the following guest post:

Experimenting with Low Voltage on the (tr)uSDX

by Bob (K7ZB)

I wanted to see how the (tr)uSDX would perform at lower voltages, so I decided to power it with a 6V Eveready lantern battery. With this setup, the radio delivered 1.1W to the antenna through an ATU-10, connected via 20 feet of RG-316 coax to a 20M Hamstick mounted off my condo balcony. I also used a wire counterpoise to complete the system.

Initially, I had planned to use a variable buck converter to step down the voltage from my 12V battery packs incrementally while measuring output power.

DROK DC Buck Module, Adjustable Buck Converter Step Down Voltage Regulator 6V-32V 30V 24V 12V to 1.5-32V 5V 5A

Unfortunately, the buck converter couldn’t handle the radio’s load and tripped offline each time I tried to use it. While it wasn’t suitable for this experiment, it’s still a handy and flexible little converter for other purposes.

Testing with the Lantern Battery

Switching to the 6V lantern battery, I used an antenna analyzer to fine-tune the counterpoise length, geometry, and placement. I achieved an acceptable SWR just under 3:1 at the radio end of the coax, which the ATU-10 easily matched down to 1:1.

Transmit performance was promising—I received a 10dB RBN report from AC0C in Kansas City at sunrise, running 1.1W. I also monitored my own signal using an ATS-20 receiver inside the condo.

The Receive Issue at 6V

However, reception was a different story. While the transmit side worked well, the receiver performance was significantly degraded. At 6V, my Malahit (tr)uSDX, which is normally a solid receiver at 12V, struggled to pick up signals. The noise level was noticeably high, and I could barely hear anything. I’m curious if others have experienced similar issues when running this radio at lower voltages.

Success at 12V

3-D printed hamstick AZ-EL adaptor design by AB7E

To compare, I switched to a Talentcell 12V 3000mAh Lithium-ion battery pack, and the radio instantly performed as expected. With 5W output, I quickly made a QSO with a station in Vermont—a night-and-day difference from the 6V test!

What a delightful little QRP rig this is!

73, de K7ZB
Bob
Gilbert, AZ

Update from Bob: There has been some interest in the AB7E antenna balcony mount designed for me and he is receiving requests directly as well as comments on the post.

From AB7E:

Well, I’m happy to provide the design files to anyone who wants to get them 3D printed, but it takes roughly 30hours to print them and I have no interest in printing and selling them myself. I would have to charge far more than it is worth. I made that one for my friend Bob because he wanted to mount his Hamstick to point out at an angle like shown in the picture, but in my opinion it would be just as effective (and far cheaper) to simply clamp the metal bracket to the balcony railing with a C-clamp or similar and have the Hamstick or other whip antenna point out horizontally. The bracket can be bought from Amazon: https://amzn.to/4aLVTR4 (QRPer.com affiliate link)