I’ve just learned that the Parks On The Air (POTA) admin is in the process of cleaning up and reorganizing the way Programs, Locations, DX Entities, and Parks are stored in its database.
Many thanks to Alan (W2AEW) who shared a link to this document which explains what they’re doing and even links to logs as they implement these changes.
In short, this will have an effect on activators, especially, because there’s a decent chance you will be using a new park prefix, and in some cases, possibly new park numbers.
A number of POTA prefixes have changed already.
In fact, if you’re activating in Canada, you might have already noticed that the park prefix is no longer VE, but is now CA.
As an example, in my activator logbook, what was once VE-1596 (Hog’s Back Conservation Reserve) is now CA-1596.
Here in the States, the prefix will soon change from K to US.
These prefix changes will happen for many other countries as well.
Of course there’s nothing, as an activator or hunter, you need to do other than start using the new prefix when it has been implemented. All of your old logs will automatically update in the POTA system with the new prefixes and/or numbers.
It might take time for logging applications like HAMRS to adjust to new prefixes. Activators might need to use the old prefix while live-logging during an activation, then use a find/replace string in a text editor later to fix the ADIF file.
The QMX by QRP Labs is a five band, multi-mode radio introduced by Hans Summers G0UPL at FDIM in 2023. The QMX is the next logical step in the radio development journey at QRP Labs, bringing together the innovative approach to FSK modes like FT8 from the QDX and the CW performance of the QCX series. This is all done in same enclosure as the QCX-Mini which is not much larger than a deck of playing cards.
The QMX is about the size of a deck of cards.
The keen observer will notice that the QMX also sports a built-in microphone which, along with associated circuitry, supports future introduction of voice modes by way of firmware update. Other notable features include SWR metering with protection as well as solid-state “PIN” diode T/R switching, plus the option for “high band” coverage of 20 through 10 meters in addition to the original 80m-20m version.
Most hams have, at one point or other, forgotten to throw the antenna switch, adjust the tuner, or even connect an antenna before transmitting. The SWR meter and protection really sets the QMX apart from earlier QRP Labs radios. There are plenty of sad tales on the QRP-Labs forums from QCX or QDX users that “smoked” the BS170 mosfet finals in a moment of operating into a badly mismatched load. It’s remarkably easy to do, ask me how I know!
The Build
Based on experience with the QCX-Mini and having put together several QDX’s, I admit to being hesitant to starting assembly of this radio. The level of integration in the QMX as a multi-band, multi-mode unit is probably the highest yet to come out of QRP Labs. The components that were merely small in earlier radios are absolutely tiny in the QMX, specifically the LPF toroidal cores. The main board, internal switching power supplies, display, and controls board are all sandwiched together in a tight fit for the custom enclosure.
Most of the electronic components installed on the main board.
The build started with a slow and methodical approach of doing a little bit each day and working in the morning when my mind was fresh and there was good light on my workbench, a.k.a. the dining room table.
The first “disaster” happened when performing the factory recommended modification to Revision 2 boards shipped in 2023. The mod calls for a protection diode to be installed across a SMD mosfet. Several leaded 1N4148 diodes were available in my “junque” box so I attempted to carefully fit one of these in the right position on the board. While soldering the diode in place I managed to lift C508, a microscopic .1uF SMD capacitor, clean off the board!
The suggested modification adding a protection diode.
Given the tools at my disposal, there was no way I was going to be able to get that capacitor back into place. Therefore, I grabbed a standard through hole .1uF cap and painstakingly got it connected in the right place, verified by lots of continuity testing.
Once finished with all the electronic components on the main board, I was feeling pretty cocky and also the completion of the project was more clearly in view. The cautious and methodical approach gave way to a faster build pace, which directly lead to the second “disaster.” While installing the headers that connect the main board to the display board, I failed to CAREFULLY READ THE ASSEMBLY MANUAL and soldered the male pin headers where I should have installed the female sockets!
This misstep might have ended the project right then and there if I had not at some point in the last year bought a proper desoldering tool. This is not an expensive automatic vacuum pump powered solder re-work stations, but rather a heating tip and manually actuated solder sucker built into one tool. Twenty-two unsoldered connections later, we were back on track. Continue reading QMX – From Kit to Field!→
Parks on the Air offers a diversity of properties. In addition to those that commonly come to mind like state parks, forests, and national wildlife refuges, there are wildlife management areas (WMA) about which I’ve written and fishing lakes. This past week the POTA Babe visited Evans County Fishing Lake (K-7464) here in Georgia.
Source: Google Maps
The drive to the property was pleasant and relatively quick. On the way, I drove through the town of Pembroke. According to Wikipedia, this small community was a railroad town and turpentine shipping center and named after an early resident, Pembroke Whitfield Williams.
I took to heart Thomas’ advice in his recent post “Building Positive Park Relations” and contacted the office managing the property before my visit. I spoke with an employee who confirmed they had no problem with me putting a temporary antenna in a tree at any of the properties that district office manages. I also made a point to introduce myself to the DNR employee on site when I arrived. As soon as I said the words “ham radio operator”, he responded that they love having ham radio folks on the property! (Kudos to all those who have activated there before and were good ambassadors for our hobby.)
park office
Fisherman enjoying the gorgeous day
As I did for the Hiltonia WMA activation, I checked the satellite view of the property on Google Maps beforehand. There are three lakes with Bidd Sands Lake being the largest. (Bidd Sands is named after a beloved member of the local community who gave his life in Vietnam in support of the men he was leading.) At the east end of the lake is a dyke. That seemed a great place to set up, partially because of the openness but also I was likely to not be in anyone’s way.
Source: https://georgiawildlife.com/evans-county-pfaSource: Google MapsClose-up view of the dyke. Source: Google Maps
It was still rather chilly despite the sunny sky overhead so I chose to operate from the car rather than set up my Helinox chair and be out in the open. At the end of the dyke was a large oak tree just begging for the Tufteln EFRW antenna. I had the new Chelegance MC-750 with me but I’ve grown partial to putting antennas in trees. I love the flexibility of effortlessly changing from one band to the other without adjusting a whip and/or counterpoise as you have to do with a vertical. Continue reading The POTA Babe Goes Fishing (Sort of)→
Because I receive so many tips from readers here on QRPer, I wanted way to share them in a concise newsletter format. To that end, welcome to another QRPer Notes, a collection of links to interesting stories and tips making waves in the world of radio!
My good friend, Vince (VE6LK), came up with a great idea a few weeks ago: reach out to CW ops and ask one question that might help newcomers to Morse Code. Each video is 2-3 minutes long and features a number of ham radio operators who operate CW (I’m chuffed to be one of them). I’ve learned something from each of these videos. Click here for the full playlist, or start watching via the embedded player below:
LICWC CW Haptic Device
Many thanks to Perry (N5PJ) who shares this video from Kyle (AA0Z):
Simple FT8/FT4 via a KX2 and iPhone
Many thanks to Jason (KD9ZHF) who shares the following video from Mark (KD7DTS):
For those regular readers of QRPer.com, you know that this POTA Babe has a goal of 60 new-to-me park activations for 2024. I am planning a POTA trip this summer to North Carolina and/or Virginia. I will be on the road for eleven to twelve days with nine to ten of those days potentially available for activations. I’d like to hear from y’all what one park you think I should visit and why.
You can either leave your suggested park in the comments below or email me via the address on my QRZ page. As summer will be here before we know it, I’d like to nail down my plans soon. Please share your suggestions by Wednesday, March 6th.
For safety reasons, I will not share my itinerary before the trip; however, I will give credit in the articles I write from the trip to the op (or ops if the park is suggested by more than one person) who suggested that park.
Thank you in advance for your assistance! Keep having fun with your QRP adventures!
In the spirit of full transparency: he sent this at no cost to me, and, as a reminder, Chelegance is also an affiliate of QRPer.com.
I’ve been eager to take the 80-meter coil on a POTA activation because 1.) if it proved effective, it would be great to have such a low-impact, low-profile antenna for 80 meters, but 2.) it’s been very difficult to fit in an evening POTA activation with my family life.
It would have been difficult to gauge how effective an 80M antenna performs in the late morning or early afternoon when I typically activate local parks/summits.
On Wednesday, February 6, 2024, a two-hour window of opportunity opened. One of my daughters had a dress rehearsal that night, and I knew of a nice, quiet, secluded POTA spot only 25 minutes away.
Pisgah National Forest (K-4510) and Game Land (K-6937)
My original plan was to arrive at the Looking Glass Falls’ picnic area, deploy the antenna, fire up the stove, make some coffee, eat on-site, then begin my activation after the start of the UTC day.
So why wait for the new UTC day?
Mainly because once you hit the new UTC day, it counts as a new activation. That really works in your favor as an activator if your goal is to complete a valid activation (with ten contacts) and you’ve enough time to do that before the UTC rollover. If you time it all correctly, you could activate double the parks with a minimum of 20 contacts (split 10/10). In my case, that would mean a total of four parks activated in one evening (since this was a two-fer).
I decided fitting in an activation prior to the UTC rollover simply wasn’t worth the rush.
Once I arrived on-site, however, I was already changing my mind.
I started my activation video, deployed the MC-750, and looked at my watch. I had roughly 15 minutes before the UTC rollover.
It would be tight, but I decided to give it a go and try logging ten contacts before 18:59:59 local (or 23:59:59 UTC).
If I couldn’t log ten before the UTC day, who cares!? It would be a fun challenge for sure, but I wasn’t going to cry if I couldn’t gather enough contacts for a valid activation.
There was another factor, too: operating 80 meters with a 17′ loaded vertical isn’t exactly “efficient.” My theory, though? It doesn’t need to be efficient. It’s crazy portable, convenient, and as a POTA activator, I only need enough performance to get the job done.
Time to hit the air!
Radio Gear:
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The Sunday of President’s Day weekend, I was supposed to camp overnight at Reed Bingham State Park and pursue two more activations for my 2024 goal of 60 new-to-me parks. However,the Wednesday evening prior, I sustained an injury to my right hand which happens to be my sending hand. The injury was serious enough that I rescheduled that trip for June and, for my bi-weekly QSO with my code buddy Caryn KD2GUT, I sent on the paddle with my left-hand which turned out better than I expected.
Since I did not go out of town as planned, my son Sean attended his bi-monthly Dungeons and Dragons (D&D) meeting Sunday afternoon. Another code buddy, Gary K4IIG, suggested that while I waited for Sean, I should consider activating. The weather was unpleasantly chilly and overcast so I opted against an activation but did want to try out my new antenna, the Chelegance MC-750. I knew I needed another vertical for my POTA kit and it came highly recommended by several other hams.
Not welcoming weather!
After dropping off Sean, I headed to Skidaway Island, a 30-minute drive. Seven hundred acres of the north end of the island belong to the Skidaway Institute of Oceanography, part of the University of Georgia. The site is for salt marsh research and houses the administrative offices for Gray’s Reef National Marine Sanctuary. The land is open to the public for daytime hiking and wildlife viewing. In fact, Daisy and I have walked there on several occasions. The habitat is typical coastal maritime forest with live oaks, Spanish moss, and palmettos along with some more open areas populated by pine trees.
Daisy and I chose the open field outside the institute at which to park and set up the new antenna. We were not the only ones using the field that afternoon despite the weather. While there, several other dog owners showed up to let their pups run and play in the field.
I read the simple three-page instructional PDF from Chelegance’s website and thought I had a good idea of how to set up the MC-750. However, I had not read any instructions about using it with the tripod accessory. I knew the bottom spike needed to be removed but couldn’t get it out with my bare hands. This is why I carry a Wave+ Leatherman [QRPer affiliate link] with me! I rarely use it but when I need it, I REALLY need it. Soon the spike was off and I was ready to set up the antenna.
True to what I heard, the Chelegance vertical is easy to set up. You screw together a few sections, plug in the four radials at the bottom, select your band and extend the whip to the location marked on it, then screw the whip on. Viola! Yes, it was that easy!
Usually my son’s D&D sessions last 3.5-4 hours so I figured I would log onto the Straight Key Century Club (SKCC) sked page and see if I could scare up some QSOs as I work toward the rank of Senator. Yes, even POTA Babes do non-POTA things. For me, my non-POTA CW activities are code buddy and SKCC-related QSOs.
SKCC is a wonderful organization of more than 28,000 ops from all over the world. To pursue their awards and ranks, one has to use a mechanical (straight, cootie, or bug) key though anyone can participate in their sprints or other events to join in the fun (just send “none” for the SKCC number if using a paddle). It is because of them that I learned to use a straight key and cootie (my favorite key) and am now learning to use a bug.
I decided to start with 20 meters and moved the whip to the 14 MHz mark. Then I remembered my code buddy Caryn KD2GUT mentioning something about a contest going on this weekend. I set up my laptop and checked the Reverse Beacon Network online graph by HA8TKS. WHOA! That band was chock full of signals. As I was using my KX2 and was therefore QRP, I knew there was no point calling CQ on that band.
The SKCC sked page is a wonderful resource. You can private message ops for a QSO or just to say hi! If calling CQ, you can post your frequency and on what you are working. I claimed 18.088 and noted I was working toward Senator, using QRP and slower ops were welcome. (I like to slow down for newer ops or those who are in an ambling frame of mind as many other ops slowed down for me when I entered the hobby.)
I spent about 10 minutes calling CQ and queried on the general section of the sked page if anyone was hearing me as I had a new antenna. That is when Jim N0IPA from Colorado answered my call. Jim, like me, is learning to use the bug. I suspect he is working on the Triple Key Award, too. To achieve this award, an op has to have 100 unique SKCC-member QSOs each with a straight key, cootie, and bug. I happened to be Jim’s first bug QSO! The standard SKCC exchange is RST, QTH, name, and SKCC number and it wasn’t long before we had each other in our log.
About ten minutes later, Jacob N3VH answered my call. He is located in New Jersey and said by the end of our QSO, my RST was a 559. Both Jacob’s and Jim’s QSOs counted toward my Senator progress putting me at 48 out 200 QSOs left to earn my toga!
Unfortunately, my son’s D&D session ended earlier than expected which meant it was time for this POTA Babe to call QRT. The short time was well worth it as I now felt more comfortable with the new antenna and was 2 QSOs closer to earning the rank of Senator with SKCC. Plus, I got on the air with QRP for a non-POTA exchange which is unusual for me. I also have a place I can visit (if the weather cooperates) two weeks from now for more non-POTA QRP work. The fun with ham radio never stops, does it?!
And for those of you wondering how my progress with my 2024 POTA goal is coming along, you’ll find out soon when I attempt to activate park #17 on that journey. Stay tuned…
I did not know if you are aware, but Digikey has in stock about 67 HRWB 5-port dc power strip kits. I ordered one last night, they are $49.94 plus tax/shipping. Apparently these have been out of stock for some time, I am glad to see them available.
72 and God bless,
Mike Serio
KG4MTN
Thanks for the tip, Mike! These will sell out quickly, so grab one while you can, I say! I love mine.
In late December 2023, I received a package from Jesse at JNCRadio/Chelegance. It was their new MC-599 portable dipole antenna. They sent it—full disclaimer: at no cost to me—for evaluation, but shortly after receiving it, life got crazy and I was delayed in taking it to the field.
Fast-forward to February, and I was eager to take it to the field and see how it might perform. On February 5, 2024, a nice window of opportunity opened in the afternoon while one of my daughters was rehearsing A Midsummer Night’s Dream with her cast. Pisgah National Forest and Game Land were a 20-minute drive from her meeting site, so I headed there to deploy this new antenna.
The JNCRADIO MC-599
On-site, I pulled out the two main components of the MC-599 dipole system: the bespoke padded bag holding the antenna and the portable mast.
I knew the basics about assembling the MC-599 because I had watched a video on the Chelegance website that morning.
However, this was the very first time I had deployed the MC-599. I had never even removed any of the antenna components from the padded bag.
With this antenna, it’s best to have an open area for the two sides of the dipole (two telescoping whips) to fully extend without touching tree branches, etc. I had one particular picnic site in mind at the roadside picnic area I chose, but a couple was having a picnic there when I arrived. I waited to see if they might be leaving soon, but they weren’t, so I chose a site I had used before, even though it was flanked by trees.
Assembly was easy: I simply attached the center of the dipole to the 13′ mast, then attached the two telescoping whips to either side and extended them to the 20M position silkscreened on the whip (identical to the MC-750 vertical markings—see below).
Next, you simply attach your coax to the center of the dipole, then extend the mast all the way up.
I had to avoid touching tree branches, but it actually fit quite easily into this small space.
Since it was a bit breezy, I used some line to guy the mast. Ideally, you’d want a minimum of three guying points, but I only had two lines with me, so I made do, and it worked fine—the antenna was stable.
Next, I set up my radio: the Yaesu FT-818ND. Since the MC-599 was, in theory, resonant, I didn’t need an ATU for a match.
I turned on the FT-818 and discovered that the SWR was a perfect 1:1. Amazing.
I suppose I shouldn’t have been surprised because my Chelegance MC-750 is always perfectly resonant (without needing a transformer) simply following the whip markings for guidance.
I should note here that the MC-599 can handle up to 200 Watts PEP—I was pushing 5-6 Watts. Also, the frequency range using the whips is from 20-6 meters. Chelegance also includes two 7 MHz wire elements that can be deployed in an inverted vee shape to play radio on the 40-meter band. It’s an efficient system and has many fewer components than a Buddipole systems I’ve used in the past.
Gear:
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Keep in mind that my POTA site was in a deep valley, flanked by high ridge lines–I wasn’t sure what to expect as I hopped on the air.
I started calling CQ POTA and the first station I heard was DL1OK operating in Spain as EA8/DL1OK. Logging Dmitrij was a good sign indeed for this portable dipole!
Stations kept flowing in. I worked my first ten contacts in ten minutes.
I continued working stations in a continuous pileup until I ran out of time. I ended up logging a total of 46 contact all within 50 minutes. I did spend a few extra minutes (as I always do) trying to pull out weak stations and slower code stations.
What fun!
QSO Map
Here’s what this five-watt activation looked like when plotted out on a QSO Map.
Note that this map does not include my contact with EA8/DL1OK in Spain:
Activation Video
Here’s my real-time, real-life video of the entire activation. As with all of my videos, I don’t edit out any parts of the on-air activation time. In addition, I have monetization turned off on YouTube, although that doesn’t stop them from inserting ads before and after my videos.
I’ve got to admit: the MC-599 made a great first impression.
As with the MC-750, I’m most impressed with the build quality. The components are all sturdy and nicely machined. The padded case was custom made to hold the MC-599 and its components. Everything fits together as it should and—again—was resonant when deployed according to the whip markings.
Even on this inaugural deployment, it didn’t take long to set up. The next time I deploy it, it will go even faster. Packing it up afterward (as you can see in the video) went very quickly.
Keep in mind: the MC-599 is a low-impact, high-profile antenna.
If you’re at a site that doesn’t allow antennas in trees, the MC-599 could be an excellent option. Other than using optional guy lines that would require tent stakes in the ground, it would have no impact on park grounds.
I love the fact that the MC-599 is self-supporting. This would be an absolutely brilliant antenna to use at parks with wide-open spaces and few trees for support.
That said, it is not a stealthy antenna. In fact, portable dipole antennas are some of the most conspicuous portable antennas you could deploy. They’re maybe slightly less conspicuous than a hex beam or Yagi. Even though I was cloaked by a few trees, the couple that was occupying the picnic site I had hoped to use couldn’t help but stop by on their way out and ask what it was I was doing. I bet if I had been using a wire antenna, they wouldn’t have even seen it.
I would always ask permission before setting up an antenna like the MC-599 at, say, a small historic site or urban park.
I could also see using the MC-599 for SOTA (Summits On The Air), but primarily on summits that are either drive-up, or where the hike is minimal. The aluminum alloy mast is lightweight for its size, but it’s quite large to consider taking on an extended hike. However, for a nice drive-up summit, I imagine you could work some serious DX. Just bring a few guy lines in case it’s windy.
I do think the MC-599 would make for a great Field Day antenna. Since it can handle up to 200W PEP and is easy to lower and switch bands, it would be a brilliant portable option for those operating a multi-band 100W rig.
But obviously? It’s an exceptional performer with QRP power. It’s hard to beat a dipole even when it’s only 13′ off the ground.
Thank you
Thank you for joining me on this fun activation!
I hope you enjoyed the field report and my activation video as much as I enjoyed creating them!
Of course, I’d also like to send a special thanks to those of you who have been supporting the site and channel through Patreon, and the Coffee Fund. While certainly not a requirement as my content will always be free, I really appreciate the support.
As I mentioned before, the Patreon platform connected to Vimeo make it possible for me to share videos that are not only 100% ad-free, but also downloadable for offline viewing. The Vimeo account also serves as a third backup for my video files.
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