My buddy, Jonathan (KM4CFT), is close to releasing a new CW Field Transceiver kit he designed for POTA, SOTA, and pretty much any other field radio activity.
Today, he shared the following photo, which is a bit of a teaser:
Those of you who attended Four Days in May this year may have already gotten a proper sneak peek and even operated a prototype of this radio.
Jonathan tells me that he’ll be releasing details in the near future and you’ll soon be able to order the kits via Radio Dan’s eBay store[eBay partnership link] or via his website.
Of course, I’ll also post details here on QRPer.com when the new radio kit is live and ready to order! Stay tuned!
The video was only recently published, but I’ve added it to Christian’s original field report. We’re highlighting it here for those who may otherwise miss it. (Note: Some of the video is in Italian, but YouTube closed captioning can auto-translate.)
On Wednesday, July 10, 2024, my wife and I were in the middle of a week-long stay in Wilmington, North Carolina, while our daughters attended residential programs at NCSU and UNCW.
That particular day, we couldn’t decide what to do because the weather was fickle! Temperatures and humidity were high, fueling a constant string of isolated thunderstorms rolling over Wilmington and the Cape Fear River area. Every hour or so, a new storm would roll past.
Heather suggested I fit in a POTA activation, and, of course, I loved the idea. I just didn’t want to play radio anywhere near thunderstorms.
We decided to drive south to one of my favorite coastal towns in North Carolina: Southport. Based on the weather radar, it looked like we could drive to Southport on the west side of the river, then return via the Fort Fisher Ferry on the east side, potentially avoiding most of the isolated thunderstorms moving north along the coast.
En route, we drove into a thundershower with rain so intense that most cars on the road turned on their hazard lights and slowed to a crawl. Visibility was nil.
Fortunately, the heaviest rain only lasted 10 or so minutes, and by the time we were two minutes from the park entrance, it had slowed to a drizzle. As we parked at the visitor’s center, it had all but cleared up.
Brunswick Town/Ft. Anderson State Historic Site (US-6834)
Brunswick Town/Fort Anderson State Historic Site is unique in that it offers a blend of colonial and Civil War history along the beautiful Cape Fear River.
Founded in 1726, Brunswick quickly grew into a bustling port town known for exporting naval stores. However, the town was burned by British troops in 1776 and never rebuilt, leaving behind ruins for visitors to explore today.
During the Civil War, Confederate forces constructed Fort Anderson atop the remnants of Brunswick. The fort’s earthen walls and impressive gun emplacements now stand as a reminder of the region’s strategic importance during this turbulent period.
Visitors can explore the colonial foundations and Civil War earthworks, while enjoying the river waterfront.
There’s also a visitor’s center with exhibits detailing the area’s rich history.
I was pleased to spot a picnic area on the opposite side of the parking lot from the visitors’ center. This would allow me to set up close enough to the car that if another storm approached, I could pack up quickly.
First, I introduced myself to the staff and asked for permission to activate. I was confident they would grant it, as this site had been activated 39 times already (mine would be the 40th).
The two park rangers inside were incredibly kind and accommodating. My wife and I ended up speaking with them about history for nearly 30 minutes. I also gave them more insight into the POTA program and asked if activators were following their rules. Fortunately, they gave a very positive report. NC State Historic Sites protect both the archaeology of the site and the natural resources, so I always ask for permission to activate because some sites have restrictions about putting lines in trees or stakes/spikes in the ground. Fortunately, this was not an issue at the picnic area.
Setting up
Since weather was iffy and since Heather and I wanted to spend the rest of the afternoon in nearby Southport, I decided to pair my Elecraft KX2 with my AX1 antenna.
This also gave me a chance to try out a new 3D-printed bipod that my friend Mike (KE8PTX) sent me.
I was really amazed at 1.) how easy it was to attach the clip to the antenna’s BNC base and 2.) how incredibly stable this Bipod felt even compared with the OEM bipod.
Thank you, Mike (and Adam)!
With the radio set up, I was ready to activate!
Gear
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I assumed 20 meters would be the best place to start and, frankly, I hoped it would be productive enough to cap off my activation in short order so that my wife and I could continue our travels.
Many thanks to Christian (IX1CKN) who shares the following field report:
A Breathtaking “Support Your Parks” Weekend in IT-0120
by Christian (IX1CKN)
…Day 1
The goal I had in mind was to take advantage of early morning greyline from a POTA reference, combining the appeal of an activating station with the propagation opportunities at that time of day. In this part of the season it means being active around 3/3:30 UTC, and although I didn’t manage it on day one, Saturday 20th July 2024, I went out much earlier than usual and had a few surprises, confirming the idea’s potential.
I chose IT-0120, the Tsatelet Nature Reserve, my “home reference”, because a short trip is needed to be active quickly. I was happy to go, both curious about how it would turn out and because it was the “Support Your Parks” weekend. If there’s pride in being part of this program, these are the two days to show it. The setup was as usual: Xiegu G90 with a ground-mounted 1/4 wave vertical antenna. Given the lighter battery (I had to walk to the top of the reserve), I lowered the power to 10 watts for a longer duration.
With these thoughts in mind, at 6:44 UTC, I powered up on 20 meters. After a “park to park” with a colleague in Lithuania, which I took as a good omen, I moved to a clear frequency and started calling. The first 2-3 minutes were silent, but then I got a response that changed the day: “…KL7TC.” Alaska, for the third time! Bill in Fairbanks was coming in at 5/7-8 with that unmistakable transpolar signal fluctuation. He gave me a 5/1, and when I told him I was running 10 watts, he congratulated me. I grabbed my phone and filmed part of the QSO, so expect a video. From here on, every QSO was a bonus.
Five minutes later, as the skip started to Europe, KZ4CP, Brandon from Kentucky, answered. He came in strong (another 5/8 from me), and on the second over, he said my signal jumped to 5/8. It was 6:56z, I logged it, filled with gratitude, and moved on, thinking that this project should be realized as soon as possible. From Europe’s perspective, things were slower, but responses continued, albeit at a low rate. I also managed another “park to park,” the second (and last of this activation), with LA7TN. I couldn’t hear the others on the cluster.
Don G0RQL joined in, making it the 10th QSO. The activation was valid. However, I regretted not exploring other bands. After checking and hearing a few decent signals, I switched to 15 meters, calling for five minutes with no luck. Then, I moved to 17 meters: no response to my CQ, but I heard VK3IO, Ron, near Melbourne. It was 7:33z, and although he wasn’t very strong, he was still a solid 5/7. I waited for him to finish his QSO and called. After some persistence, he got my call. The report was 4/3, but even if it were lower, the joy of covering over 16,000 km with 10 watts is incomparable (there will be a video portion for this too).
At this point, it was close to 10 local time (8 UTC). The sun was starting to heat things up (including the G90 chassis, which has a known issue with heat dissipation), but I had one more experiment. The Chinese multiband vertical is designed for 20 to 10 meters, but with a coil I bought earlier, it can do 40 meters too. I added the component, found a clear frequency (7130), and started calling.
I had noticed a couple of times that this solution is a compromise, not very effective. However, it brought in another 5 QSOs: with Piedmont, Tuscany, Lazio, and France. So, it did something and was better than nothing. I wrapped up after 68 minutes of activation with 17 contacts logged. The slow rate indicates conditions aren’t ideal yet, but with Alaska, Kentucky, and Australia (for the first time from a park) in the log, and a breathtaking view of Aosta, there’s no room for complaints. See you next time, and thanks to everyone!
Video – Alaska and Australia:
…Day 2
A thunderstorm hit Aosta at 5 AM. No thunder, just a continuous rumble like an engine, with flashes of lightning every few seconds. Enough to wake me up, though sleep is always welcome (especially on a Sunday). Once it stopped, I didn’t curse the rain but seized the opportunity to get closer to my original project. So here I am, in the car, arriving at IT-0120, the Tsatelet Nature Reserve, at 6:44 local time, 4:44 UTC, on Sunday 21st July 2024, for a POTA activation not exactly at greyline, but still early morning.
Clearly, I couldn’t use Saturday’s setup. The storm had created puddles and stagnant water, making it impossible to set up outside. So, I decided to operate from the car, with the Xiegu G90 remaining the core of the portable shack, but swapping the ground-mounted 1/4 wave vertical antenna for the Outback Falcon HF-1899 on the car roof. Definitely less efficient, but if we wanted to do this today, this is how it had to be done.
Also, I had a less capable battery than the day before, so I lowered the output power to 10 watts to ensure longer operation. As soon as I turned the radio on 20 meters, I was amazed by the number of American accents I heard. I listened to VE3GXT calling CQ POTA from Ontario with a solid signal, but despite my responses, he couldn’t hear me. So, I found a free frequency and started calling. The pace was slow, as seen the day before, but something happened.
First, Joe WB2WKJ replied, explaining that it was his first time “hunting” a park from Italy. However, he only gave me a 3/3 in New Jersey, making it clear that receiving is one thing, and transmitting (and being heard) is another. I kept my spirits up, and soon W3MJB, Mike from Pennsylvania, responded. This time, the report was 5/2, which sounded more in line with a QRP station. The “park to park” call that followed was thrilling.
It took a moment because the signal wasn’t strong, but it came from VK3YV Tony, activating in Victoria, Australia. I got no more than 3/1, but the noteworthy part was that 10 watts and a vertical on a car were reaching the other side of the world (a first for me with POTA). Feeling encouraged, I searched for another activating station from “Down Under,” VK2USH in New South Wales.
Again, I was heard with difficulty (which was to be expected), but we completed the contact, and I felt that even if I didn’t reach 10 QSOs, the activation was worth the day. Before the skip shortened, I heard a station from New Zealand and, out of curiosity, on 15 MHz, the WWVH time signal from Hawaii, which, in a surreal twist, arrived simultaneously with WWV (from Colorado).
You’d expect to hear only one of them (the one from the Pacific) at that time of morning, but there are propagation theories, and then you turn on the radio and hear what actually comes in. The calls continued, and I logged KZ4CP, Brandon from Kentucky, for the second day in a row, and KN4DY Randy from Georgia. From him, I even got a 5/3, the highest signal report of the day from across the Pond.
It was 6:50 UTC, and Europe started responding. The activation, previously an uphill battle, leveled out. Many Spanish friends and other familiar POTA faces enriched the log. When I reached a good 20 contacts, I tried moving to 40 meters. Again, the antenna wasn’t very effective on that band, but I managed about ten contacts, including Belgium, the UK, and Austria.
In the end, I made 31 contacts in 3 hours. The rate remained slow, but today, more than ever, I saw firsthand how greyline phases or signal enhancements on shortwave can hold surprises. Sure, with more power, much more could have been achieved (besides Canada, even KD9VVS Nick activating from Indiana couldn’t hear me). I thought about “only” 100 watts, but there will be time to keep testing. Low power is a philosophy, but it shouldn’t become a dogma, because the beauty of radio is giving meaning to what we do.
Today, no activation pictures to accompany the post (also because IT-0120 has been featured on QRPer a few times now), but a video. Apologies if it’s not strictly about hamradio, but the two signals from Hawaii (the one with the female voice) and Colorado (male voice), rarely received so clearly here, demonstrate better than many examples how shortwaves are made to travel far, how thrilling it is to chase them, and how intense this “Support Your Parks” weekend has been.
Many thanks to Conrad (N2YCH) who shares the following field report:
QRPppppp….WSPR
By: Conrad Trautmann (N2YCH)
WSPR, or Weak Signal Propagation Reporter, is a digital mode you can select within WSJT-X. You can use the data that’s generated by the WSPR network to check your own antenna’s performance for transmitting and receiving and also to see what paths are open by band at a particular time of day from your QTH. Recently, I’ve been using WSPR to improve my own antenna systems and to help reduce local noise sources.
Originally developed by Joe Taylor, K1JT, an approximately two minute QRP transmission contains the originating station’s call sign, the maidenhead grid locator and the transmit power level being used. Stations typically use 250mw up to 5watts when they send these signals. WSJT-X allows you to select how often you want to send this transmission and what bands to transmit on. There’s an embedded schedule in WSJT-X that allows “band-hopping” for stations using a multiband antenna to transmit on different bands. When not transmitting, it listens for and decodes other stations transmitting and can post “spots” of those stations to the WSPR network database.
WSJT-X WSPR modeWSPR Band Hopping Schedule (click to enlarge)
Here on QRPer.com, Thomas, K4SWL posted in this field report what the various flavors of QRP power levels are…
QRP: 5 watts to 1 watt (for some contest 10 watts = SSB QRP)
QRPp: Less than 1 watt to 100 mw
QRPpp: Less than 100mw
Did you know that there are more than 3,000 WSPR HF beacons running on all of the amateur bands all over the world at QRP power or less? Many are running 250mw or less. If you open up WSJT-X and select the WSPR mode, you’ll see that the pull down for power levels give you these options:
37dbm = 5w
33dbm = 2w
30dbm = 1w
27dbm = 500mw
23dbm = 200mw
20dbm = 100mw
17dbm = 50mw
13dbm = 20mw
10dbm = 10mw
7dbm = 5mw
3dbm = 2mw
0dbm = 1mw
You could transmit your own beacon if you choose to using WSJT-X. You can also receive many of the 3,000+ beacons that are on the air right now if you wanted.
Why, you ask?
Let me tell you about the WSPR journey I’ve taken over the past few months and how what I’ve learned has benefitted me, my station and my antennas. Here’s how extreme QRPpp signals can help all of us.
I’m an avid digital operator, and I’ve tested many of the digital modes that WSJT-X, FLDigi, VarAC and others have to offer.
WSPR (Weak Signal Propagation Reporter) is a program embedded as a mode in WSJT-X and you can set it to transmit at the various power levels I listed above and band hop to different bands if your antenna can support those frequencies. When it’s not transmitting, it will receive and post the beacons it hears to the WSPRnet.org web site. For anyone familiar with pskreporter.info, WSPRnet.org is similar in that it provides maps of where and when “spots” are received and the relative signal strength the signals were when received by station, the mode and frequency.
After setting my station to transmit and receive on WSPR and looking at my spots on WSPRnet.org that were reported by receiving stations over the previous day, it was a thrill to see my 250mw signal making it out all over the world. Amazing actually, that such a small amount of power could travel that far. 250mw to Antarctica? That’s pretty good.
I bought a QRP-Labs QCX transceiver and the external companion GPS clock, which supports running WSPR transmission stand alone, without tying up a computer. Then I learned about the Sotabeams WSPRLite Antenna Tester (a 250mw WSPR transmitter) and the various WSPR transmitters offered by ZachTek which can also run without needing a computer.
My goal was to have WSPR beacons transmitting on as many bands as possible. Combining them into a single, multiband antenna posed its own problems, which is a topic for another article. However, all of these solutions just transmitted. I was hoping to also be able to receive and post spots as well.
Then, QRP-Labs (shout out to Hans Summers) came out with the QDX and then the QMX, both of which connect to a PC and are controlled by WSJT-X to do the band hopping transmitting and receiving. Like FT8, WSPR does depend on timing to work best, so using an external GPS clock for the QCX or connecting a QDX or QMX to a computer that can get it’s time from the internet can help keep the transmission cycles in sync with the receiver sites for best reception results.
Various WSPR transmitters and transceivers
This is cool stuff, but still, what’s the point? That’s when a friend I made in the WSPR community, Tom, WA2TP pointed out how to use all of these beacons to improve my station’s receiving capabilities. I have a good HF receiver and a dipole antenna and a hexbeam on a rotor and I figured I was good to go. I was making contacts without any problems. Tom told me this: “It’s all about the noise.”
He recommended using a wideband SDR called a Kiwi that can view the entire HF spectrum from 0 -30MHz on a waterfall at one time. My ICOM IC-7610 can connect to a PC and work with HDSDR software which has a waterfall, but it will only show you the spectrum of the particular band you’re on, not the entire HF spectrum at once. The Kiwi shows the entire spectrum from 0 to 30 MHz and when set up just right, you can see noise in there…a lot of noise, emanating from all sorts of things.
If you’re trying to receive a 250mw WSPR beacon signal transmitting from Australia, the noise from the after-market, wall-wart switching power supply connected to your cell phone charger a few feet away from your antenna could be way noisier and will blank that VK beacon right out. Your antenna and ability to hear distant signals is only as good as how low or quiet the local QRM is that we all have to deal with.
In short? It was amazing and certainly a fabulous way to start the day.
We were in Wilmington because one of my daughters was attending a week-long program at NC State University, and the other was attending a similar program at UNC Wilmington.
That Tuesday afternoon, after dropping my daughter off on the campus of UNC Wilmington, my wife suggested we hit Carolina Beach State Park for a POTA activation. It didn’t take me a microsecond to agree to that plan!
Carolina Beach State Park (US-2722)
Carolina Beach State Park, located just south of Wilmington, is a unique spot full of natural wonders. The park covers over 760 acres of Pleasure Island, with diverse habitats ranging from the impressive 50-foot Sugarloaf Dune (which used to be used as a navigational aid) to the fascinating limesink ponds, each with its own special plant community.
The park is also home to the Venus flytrap, a rare carnivorous plant found only in a small part of the Carolinas. You can explore the park’s trails, winding through maritime forests and maybe even catching a glimpse of these fascinating plants in action. The park also has a marina for easy access to the Cape Fear River and the Intracoastal Waterway, making it a great spot for boating and fishing.
We arrived at the park a little before 4:00 PM local time. Had it not been so hot and humid, we would have hit one of the park’s trails before finding a spot to do POTA, but the weather being what it was, both of us were happy to spend time in the shade.
We pulled into the main picnic area and quickly found a spot to set up. As I pulled out my radio and camera gear, my wife, Heather, pulled out her travel watercolor kit, all packed in a Tom Bihn HLT1 (we’re a pack geek family!).
When Heather joins me on POTA activations, she almost always sets up somewhere and paints while I activate. I love the fact that we both enjoy the experience in different ways.
In fact, my buddy Steve (KC5F), who is also an avid POTA activator, performs almost all of his activations with his wife, who also paints while he activates. He told me that she likes a good couple of hours of painting, so he typically racks up a lot of contacts in that amount of time.
Setting Up
The first thing I did was set up my Thermacell mosquito repeller–it needs a few minutes to do its thing and clear out the mozzies. The model I carry, the “backpacker,” fits a standard backpacking stove canister. I’ve recommended this one to many other POTA ops who operate in areas with mosquitoes–so far, it’s never let me down!
After watching an activation earlier this year at Tuttle Educational State Forest, where I placed my KX2 and logbook on a wet and dirty picnic table–covered in pollen and other tree bits–Alanna ordered a blue Gingham picnic tablecloth and whisk and had it sent to me.
I’ve had this tablecloth packed in the go-box I keep in the Subaru, and this activation was the perfect time to put it to use because the table I chose needed cleaning!
Thanks, Bob and Alanna!
Next, I deployed my PackTenna 9:1 End-Fed Random Wire antenna and paired it with my Elecraft KX2.
New paddle mount!
I did (finally) get to try out a new piece of kit in the field: a newly-designed paddle mount from Steve (KB3SII) at QRPworks.
Steve handed this prototype mount to me at Hamvention this year. It’s an updated design of one we tested last year.
You basically attach the mount to the front of the KX2 (or KX3) and place a paddle like the Bamakey TP-III that has strong rare earth magnets. The paddle locks onto the metal pad and makes for a rock-solid, ergonomic keying experience.
Steve also sent me two short 3.5mm angled cords to connect the key to the radio, but I forgot to pack them for the trip. My standard paddle cable worked fine, although I had to angle the TP-III slightly.
Note that Steve plans to have these paddle mounts in production and available on the QRPworks website in the coming weeks. When they’re available, I’ll post a direct link.
With the KX2 set up and ready to go, it was time to hit the air!
Gear
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I started calling CQ POTA on 17M and discovered that it was a fairly quiet band. Nonetheless, I worked two stations in about six minutes. Secretly, I was hoping there might be a 17M path into Europe, but then again, it was a bit late in the day for that (and it seemed 17M wasn’t terribly energized). Continue reading Carolina Beach State Park: A QRP Oasis Amidst the Summer Heat and Activities→
Firstly, a huge shout-out and thank you to Thomas K4SWL for letting me hang out here on QRPer.com and exercise my creative writing chops, and to the community at QRPer.com for giving me such excellent feedback in my original article – both of which propelled me into this fun project.
Sometimes I begin my creative writing on a notepad with pencil, and sometimes I just type it out.
I was overwhelmed with the response in the comments and realized I had struck a nerve. At least one person told me that I should have bought a lotto ticket with that sort of luck, but I’ll tell you all that I am richer with the knowledge I’ve gained and shared with others as a result of the interviews I conducted with the who’s who of the English-speaking CW world.
My first key, on the right. Yes, a converted joystick. Yes, I did my exam with it.
I’m blessed to have met so many interesting people along the way and forged new friendships as a result.
Additionally, extra special thanks to Tim N7KOM, Alan W2AEW and Adam K6ARK who, along with Thomas, were my first victims interviewees where I was able to refine my interviewing and video editing process. And, Adam gave me a great idea – refine the videos into YouTube Shorts format. These refined Shorts are called 1CWQ and are the essence of each tip I recorded. The credit for the Shorts really belongs with Adam.
My entire family of keys (minus one in my truck and the others pictured above). W8BH Morse Tutor kit seen in the back of the photo. Visit my website to get your kit.
I interviewed 53 people for the series and produced well over 100 videos as a result as some gave us (you and I) more than one tip. If you missed the series, it’s not a ton of hours to binge watch. The original recordings are 2-3 minutes each and the shorts are all under one minute, or else YouTube won’t let me call them a short. You can find theOriginal playlist here and the Shorts playlist here.
I hope you enjoy these CW tips at least half as much as I did in recording and editing them.
One final tip, direct from my friend W5WTH who offers the following excellent advice in words better than I could ever say:
“Don’t let perfect be the enemy of good. Most CW ops are patient and can recognize a new op right away. They will most likely be happy to work you at a slow speed because they recall their personal CW journey. SKCC and POTA are the two easiest, stress free ways to make a CW QSO. Once you get the numbers and letters learned then start trying to get on the air. Don’t worry if you screw up because we all screw up and try to get better…”
Lastly, this is the story behind the straight key featured in all of the videos and in the main photo for this article. The key was hand crafted by my friend VE6AB, Jerry Clement, now a silent key. Jerry was a creator, maker, master machinist, backcountry hiker and camper, and photographer – a real true Renaissance Man in every sense of the word. His photography graced the covers of QST Magazine often in recent years.
At a time when CW was required for HF privileges in Canada, Jerry did his CW exam with this key and he told me once it was a real attention-getter at that testing session! Upon his passing it was bequeathed to me with instructions for me to use it and to keep my [at-that-time struggling] CW skills up. The only parts he did not manufacture were the ball bearings and the rubber feet – all of the other parts were crafted in his hands. I shall always treasure this beautiful key.
Thank you, Jerry, for encouraging me from the great beyond. DididiDahDiDah
73 and dit dit,
…Vince
First introduced to the magic of radio by a family member in 1969, Vince has been active in the hobby since 2002. He is an Accredited examiner in Canada and the USA, operates on almost all of the modes, and is continually working on making his CW proficiency suck less. He participates in public service events around Western Canada and is active on the air while glamping, mobile, at home or doing a POTA activation. You can hear him on the Ham Radio Workbench podcast, follow him on Twitter/X @VE6LK and Mastodon @[email protected], check out his YouTube channel, and view the projects and articles on his website.
Many thanks to Karl (K5KHK) for sharing this guest post, which originally appeared on his blog, Karl Heinz Kremer’s Ramblings:
A Digital Station in Your Pocket
by Karl Heinz (K5KHK)
How small can a complete station to work FT4/8 be? With the QRP-Labs QMX, we have a transceiver that certainly fits the bill for a small station. By itself it can only be used for CW, to use the digital modes, one has to combine it with a computer. Even the smallest laptop is too big the fit into the pockets of my cargo pants – we are trying a pocket sized station after all 😉
In this article, I will describe how to use a QMX transceiver and an iPhone to activate a POTA park with FT8.
The Components
My QMX is the original that was released at FDIM 2023, so it covers 80m to 20m. Mine is serial number #20.
My iPhone is small enough, but unlike Android based phones, the QMX cannot be connected directly to the phone. Apple sells a “camera adapter”, which plugs into the phones Lightning port on one side and provides a USB connection on the other end. $29 for the original Apple part was a bit hard to swallow, so I opted for something cheaper straight from China’s “we clone everything” factories: https://amzn.to/3WDSfUc
[Please note: All Amazon links are affiliate that support QRPer.com.]
The picture shows both a USB and a lightning port on the adapter. This should allow the phone to be powered/charged while the adapter is being used – more about that later.
Another limitation is the antenna: The QMX does not have a built-in antenna tuner, and even my QRP sized ZM-2 would have to live in a different pocket 🙂 My plan is to use a resonant antenna so that I would not need a tuner.
The easiest antenna with a good match is a dipole, but that is a bit more challenging to deploy in the field, so I opted for an end-fed halfway (or EFHW) antenna with a 49:1 transformer. I 3D printed a winder that allowed a BNC connector and the transformer to be mounted on the wire winder:
Because I am using a different toroid for the transformer, I had to remove the “bump” that is holding the toroid in place. Going forward, I may change the design a bit more to have so that I can fit more wire on the winder.
For those familiar with the transformers usually used for EFHW antennas, the picture shows two things that are different: As I’ve already mentioned, I am using a different toroid (the Fair-Rite 2661102002 core, which is a type 61), and a different winding pattern. More about that in a future post.
To power my station, I am using a TalentCell rechargeable 12V power bank: https://amzn.to/3snTyr8
First Test
With everything in place, I tried to make a quick FT8 contact from home with this setup, but with my “big” EFHW antenna in my backyard. Because it was just a quick test, I did not even bother to hook up the charging cable for my phone (more on that later).
I connected the phone to the adapter from above, connected the adapter via a USB cable to the QMX, and connected the QMX to a 12V power supply (unlike anywhere else in ham radio, 12V here means 12.0V and not the usual 13.8V), and hooked up the antenna to an antenna tuner and then to the EFHW in my back yard.
I answered an FT8 CQ call and successfully completed the FT8 exchange. The software does the automatic sequencing of the different messages, so it is very straight forward to use. With this first contact, I verified that the iPhone/adapter/QMX setup does work.
The Real Test
The next attempt was while camping at Hamlin Beach State Park (US-2068). I set up everything just like at home, but because I was planning on being on the air for a while. I also hooked up the cable to charge my phone while I was operating.
I was able to receive stations, but could not transmit. What made the troubleshooting more complex is that during setup, I created some sparks (that is why I do not like the barrel connector for power). I was pretty sure that the QMX was not involved, but not being able to transmit kind of suggested that I killed the finals. So I put everything away and used my KX2 instead.
Back home, I did some troubleshooting and hooked up a straight key to the QMX and it worked: I was able to finish a few CW QSOS without a problem, so the finals were definitely OK. I then set up the system again for FT8, and sure enough, I was able to make a contact. Because it was a quick test, I did not bother to use the power cable for the phone. By now, most of you probably know what the culprit was, but because I did not spell things out like this, I was still in the dark.
Success At Last
Fast forward a few more days… We went back to Hamlin Beach State Park – but this time to the picnic area – and I set up my station again. And sure enough, once everything was set up, the QMX did not transmit. This is when I took a step back and reviewed everything I had done so far, and slowly I came to the realization that when I provide power through the adapter to the phone, the QMX would not transmit.
I was able to finish my FT8 activation with my pocket sized digital station. I did run into one problem however: iFTx allows to automatically determine one’s grid square – which of course is important for FT8. When I enabled that, it correctly put me into FT13 at first, but a few QSOs later it switched me to JJ00aa – I reported this as a bug to the developer.
Using iFTx with the iPhone
The connection from the phone to the QMX is audio only. iOS does not allow an application to open a serial port connection (unlike Android). This means that the QMX will not receive any frequency information from the phone, and also no PTT signal. For this setup to work, the operator has to make sure that the QMX is tuned to the correct frequency that the correct band is selected in iFTx, and that the QMX is set to VOX mode (this is in the Digi Interface menu).
When configuring iFTx, it is possible to select a “Special Interest Activity” like POTA. This is then added to the CQ call as in “CQ POTA K5KHK FN13”.
As I’ve mentioned before, the application will automatically sequence the correct messages when a station answers the call.
Once the QSO is completed, it will be logged to the iFTx internal log, which can be exported via the usual “send to” methods available in iOS (e.g. email the log, save as a file, …).
When exporting the log, there is a choice of exporting everything, or only the new QSOs since the last export. This will create an ADIF file, which can be submitted to the POTA program, or imported into any other logging program.
At the end, I was successful in building a “pocket sized” digital station based on the QMX, I just need a fully charged phone and cannot depend on charging it while operating.
This past weekend, I attended the WCARS hamfest in Waynesville, North Carolina. My buddy Vlado (N3CZ) and I purchased a few indoor tables to sell some gear we no longer needed.
I also gave a short presentation about the ins and outs of going QRP. It was a lot of fun!
When I go to a hamfest, I spend a great deal of time salivating over the vintage stuff. This R-388 would look brilliant in my radio room! Wish I had the space.
I was surprised at how many people introduced themselves as readers, subscribers, and supporters. It blew my mind since this is a smaller regional hamfest—not Hamvention or Huntsville!
One reader asked a question I get a lot: “Do you film all of your activations?“
The answer is no, but I probably film 80% or more. I enjoy making activation videos. When I do a real-time video, I feel like you’re there with me, and I really enjoy that.
Even though I’ve simplified my camera gear, filming still adds time to my activations. I have to plan the setup so you can easily follow along as I log, and I need to ensure the audio is acceptable. When I’m really pressed for time, I skip making a video.
In addition, each activation video and field report takes me at least four hours to prepare. Unlike most YouTubers, the video editing time is minimal, but the field report takes time: preparing the text, photos, layout, links, etc. It’s a labor of love, though, and I enjoy the process.
Speaking of offline activations…
Lunch with Vlado isn’t complete without Baklava.
After the hamfest, Vlado and I enjoyed lunch (at this brilliant Italian restaurant), then I drove to Sylva to pick up Hazel (who had been staying with my brother-in-law).
On the way home, I passed the Blue Ridge Parkway, so I did an impromptu POTA activation at the Balsam Gap Overlook (which is overgrown and not much of an overlook anymore, but still a great spot for POTA).
I decided to make a short video for YouTube answering the reader’s question.
There’s some irony in making a video stating that I don’t always make videos of activations!
Those of you who know me know that I’m a huge World War II history buff. Ever since I was a child, I’ve been fascinated by the stories of bravery, sacrifice, and technological innovation that defined this era.
That’s why the activation I performed on Tuesday, July 9, 2024, was very special.
I activated the Battleship North Carolina from inside the ship, using a modern transceiver, and one of the original vertical antennas mounted on the ship.
The Battleship North Carolina State Historic Site (US-6831)
The Battleship North Carolina is a World War II-era battleship that served in the United States Navy from 1941 to 1960. It is currently a museum ship in Wilmington, North Carolina.
The ship was launched in 1940 and commissioned in 1941. During World War II, it served in the Atlantic and Pacific theaters, participating in several major battles, including the Battle of the Atlantic and the Battle of Iwo Jima.
The USS North Carolina in Pearl Harbor in November 1942 for repairs. (Photo Source: U.S. National Archives and Records Administration)
The Battleship North Carolina was decommissioned in 1960 and donated to the state of North Carolina in 1961. It has been open to the public as a museum ship since 1962.
Growing up in North Carolina, I’ve always considered the Battleship North Carolina the icon of Wilmington. You can’t cross the Cape Fear river and miss this brilliant bit of naval history–it’s so prominent and accessible.
I had not actually toured the battleship since I was a child–some 40+ years ago. Last week, however, our family spent the week in Wilmington and the battleship was first on the to-do list.
Azalea Coast Amateur Radio Club
A couple months ago, I mentioned to my buddy Bob (K4RLC), in passing, that one of my daughters was attending a week-long residential program at NC State University while the other daughter would be attending The University of North Carolina Wilmington. My wife and I would stay in Wilmington for the week and I would somehow love to activate the Battleship North Carolina for the POTA program.
Fortuitously, shortly thereafter, Bob attended a presentation about the Battleship North Carolina by Mike Hartmann (NI2S) at a radio club meeting in Raleigh. Mike is with the Azalea Coast Amateur Radio Club, the caretakers and curators of radio central in the battleship.
Bob put me in touch with Mike who then graciously accommodated my schedule, even though it required his presence throughout the activation.
Mike did make it clear that the radio room is three decks below, has no air conditioning and is a proper “sweat box.” Turns out, too, that the week we were in Wilmington coincided with a bit of a heat wave which was affecting much of the eastern US. Because of this, I asked if we could meet on Tuesday, July 9, 2024, at the earliest possible time–8:00 AM, when the museum opened.
It was a beautiful morning and I arrived on site perhaps 15 minutes in advance. I needed to pull my camera gear out of the car and allow some time for it to adjust to the humidity (which was extremely high).
I thought my lens had finally acclimatized when I started the video before Mike arrived, but it turned out the lens was still a bit foggy for a minute or two.
Mike arrived and we walked into the ticket booth where I purchased my ticket. He then led me onto the deck and into one of the roped-off entrances to the lower decks.
He kindly allowed me to film walking through the ship into the radio central area. I’ll admit that it was difficult for me to keep my attention on the camera as I was walking through a ship I remembered from my childhood! Since my video is real-time, real-life, you experience it with me–I didn’t check out the ship in advance.
I was amazed at how much of the ship was open to the public and in superb, original condition.
In radio central, Mike allowed me to peek behind some of the closed off sections with my camera, so you’ll get the follow along with me.
What I didn’t realize was just how much signal intelligence was happening on a fast battleship like the USS NC.
There were rooms dedicated to listening posts, decryption/encryption, and sharing of intelligence. This was all so fascinating and enlightening.
Next, Mike opened up the actual radio room where an Icom IC-756 Pro III was hidden in one of the original ship radio desks. This being a museum, all modern gear was hidden as well as possible.
Mike was right about the room being a sweat box–even in the early morning, it was pretty hot and humid in there. Fortunately, he had two fans he turned on and pointed at us.
The view from my operating position.
Mike set up the IC-756 Pro III by connecting it to a power supply, then attaching a Bencher paddle.
The vertical–again, one of the original Battleship North Carolina antennas–also required a little bit of matching for 20 meters.
Any movement of 10 kHz or so, required engaging the 756’s internal ATU.
As I set up the camera and made a comfortable operating position, I realized just how noisy the room was with the normal ship sounds (it has its own fresh air ventilation system) and the two fans running full-bore.
I set up my wireless mics–one on me and the other inside the portion of the desk that housed the radio.
In truth, I wasn’t confident the audio would work out at all. First thing I did when I made it back to the house that day was to check the audio–turns out, it came out pretty darn well all things considered.
In fact, the audio in the video was much better than my own two ears experienced while operating. Having one of the mics much closer to the speaker and protected from the wind blowing really made a difference.
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