Hans at QRP Labs has just posted a video of the new QCX-Mini 5 watt transceiver kit. It looks like another thoughtful design:
Even though I’ve yet to build my QCX+ (!!!), I just ordered the QCX-Mini. This little kit will be a challenge for me–even though all of the SMD components are pre-populated, it’s still a tight board and requires some fancy toroid work!
Still, I’m buying it to support QRP Labs’ work and because I love the challenge of building kits. This one is awfully cute and I’m pretty sure I’ll use it to claim a summit!
My entire QCX-Mini kit with enclosure set me back $86.99 US with shipping and tax included. How could I resist? (Don’t answer that, please.)
A number of readers have asked about the small foot under my IC-705 in recent POTA field reports.
One of my biggest criticisms of the IC-705 is that it has no built-in foot to tilt the radio for an optimal operating position. On the other hand, it does have a number of attachment points on the bottom including a standard tripod mounting point and several 4mm points.
Shortly after I received my IC-705, I checked Thingiverse knowing a clever ham would have designed some sort of leg or tilt stand.
It prints quickly and uses very little material (no support structure). Mine is made of orange PLA (because that’s what my daughters had been using), but I’m sure ABS would be a better choice.
You’ll need two M4 x 10mm screws to attach the foot to the bottom of the IC-705; mine have hex socket caps.
I’ve found that the foot is small enough that I never need to detach it even in transport.
Many thanks to Curt (WU3U) who recently contacted me and mentioned he had built an IC-705 control interface for his Elecraft T1 ATU. This is a homebrew project based on others’ work and uses the FT-817 control port on the side of the T1 tuner.
I asked Curt if he could share a little more about his tuner to post here on QRPer:
Hi Thomas, I can’t take credit for the interface, as a guy in Japan designed it. When I built mine the entire instructions and notes for code for the PIC controller were in Japanese. I used Google translate to translate all of the information and I was able to successfully program the PIC chip and build the circuit. He has since released the details and code in English.
There are two designs: one with an on/off switch, and a newer version without an on/off switch that has auto power save. Both circuits are the same but the software for the PIC chip is different. If you build the one without the on/off switch there is a very specific sequence of connecting and disconnecting the device and it’s my opinion that the one with the on/off switch is the version that makes more sense to build. It shouldn’t matter which order you connect everything up and you simply throw the on/off switch to turn the device on and off.
Building the interface takes an understanding of a fairly simple electronic schematic and acquiring the parts. You also have to have a PIC programmer and the software to write his .hex file into the PIC controller chip.
The parts for the interface are all very common parts. The resistors are standard values. My build cost me about $30 in parts but I had to buy many of them in bulk from Amazon like the enclosures, switches and 3.5mm jacks and circuit boards to name a few. Individually the parts were $30 but my bulk order cost me much more. I also had to buy a PIC programmer for $25 and figure out what software I needed to download to program the PIC chip with the author’s code. It takes an experienced builder about two hours to build the device but it’s not out of the realm of a semi-novice as long as they can get the PIC chip programmed.
Here is his newer version with the same circuit design eliminating the on/off switch by using a different PIC program allowing the interface to have auto power shutdown (low power standby) but there is a specific order for connecting and disconnecting the interface. With this version there is still drain on the battery but the designer thinks that drain is less than the normal self discharge of the battery. I feel that any discharge combined with the self discharge of the battery will be more discharge than using the design with the on/off switch. https://amateur-radio.cocolog-nifty.com/blog/2020/11/post-591d17.html
Video
I think this is a brilliant project and certainly one worth considering for those of us who already own an Elecraft T1 ATU and would like full control from the IC-705.
Monday (November 16, 2020), I made a detour to the Catawba River access of Lake James State Park (K-2739) to try a late morning POTA activation.
I didn’t plot this activation in advance, so had to work with what I had in the trunk/boot of the car.
I did a quick inventory and found my Chameleon CHA MPAS Lite vertical antenna packed and ready to deploy. (I always have an antenna tucked away in the car because…well, because!)
In terms of radios, I had the Icom IC-705 and Elecraft T1 antenna tuner packed as well. Woo hoo! A perfect combo! Let’s go!
It was blustery and cold Monday morning due to a front that moved through during the night, so it was no surprise that the picnic area was completely void of (sane) people.
I found a picnic table on the bank that was relatively sheltered from some of the stronger gusts moving across the river. It was still quite windy, though, so I propped the MPAS Lite field pack on the table to provide a bit of a wind break for my log book.
Setup was quick. I don’t think I needed more than 4-5 minutes to have the CHA MPAS Lite deployed. This is one of the advantages of field portable verticals. The disadvantage? Verticals aren’t the most effective antennas in this part of North Carolina where ground conductivity is so poor. Still…I knew I could at least grab my ten needed contacts to have a valid POTA activation.
On the air
I won’t lie: it was slow-going.
For one thing, it was 11:00 local on a Monday morning–not exactly a prime time for a park activation.
I first tried making some SSB contacts on 40 meters and spotted myself on the POTA network. I managed to log 5 hunters in 30 minutes. With patience and time, no doubt, I could log ten SSB contacts, but I didn’t have time to wait, so I moved over to CW.
Oddly, the higher HF bands were in better shape than 40 meters that morning. One of my first contacts was NL7V in Alaska on 20 meters. A most impressive contact with 10 watts into a vertical.
I was on the air a full hour and did manage to log a total of 10 contacts. I’m certain if I would have deployed a wire antenna I would have had even better luck. Indeed, had I thought about it in advance, I could have actually deployed the MPAS Lite as a random wire antenna. (Doh!) That’s one of the great things about this antenna system is that it can be configured so many different ways. Next time…
Still…I thoroughly enjoyed my time at Lake James State Park. I’ll make this detour again in the near future.
The Icom IC-705 continues to prove its worth as a superb little POTA transceiver!
MFJ Enterprises has an amazingly deep catalog of products. So deep, I often overlook items that could be quite useful in the field.
MFJ recently sent me one of their travel paddle kits to evaluate on QRPer.com–no doubt, they heard my plea for paddle recommendations some time ago.
Paddles are a funny thing: they’re basically a very simple switch, so not terribly difficult to homebrew. Yet sometimes we want to simply purchase pre-made paddles instead of building them.
I don’t personally want to invest crazy money in field paddles because there’s a reasonable chance they could get damaged in my pack or I could even leave them on the forest floor after a POTA/SOTA activation.
Plus, paddles aren’t the weak link in my CW game (ahem, yeah…you might have guessed it’s the operator–!).
The price of MFJ-561K paddles hits a sweet spot at $25 US. I know of no other paddles made in the US that are cheaper (although I know I might stand corrected on this point).
For $25, you’re not getting Begali quality: you’re getting something that’s simple and gets the job done.
The MJF-561K is actually a simple kit that you assemble at home. It’s a novice build for sure, taking (generously) 20 minutes to assemble and requiring no kit building experience. You will need to use a soldering iron to attach the three conductor wire to your paddles–otherwise, it feels more like a mini Meccano or Erector set.
At one point early in the build, I did find myself looking for a detailed photo to determine how the shoulder washers were placed. I couldn’t find one, so I decided to take my own photos to help anyone else building these paddles in the future.
MJF-561K Assembly Photos
Click on the photos below to enlarge:
The shoulder washer fits in the hole on the inside of the paddle as you can see on the upper paddle lever. The larger washer goes on the outside of the paddle, insulating the solder lug and Kep nuts.
One bolt and Kep nut holds the back of the paddles to the base.
This image shows how the center contact is screwed in. Note that another solder lug is held in place under the paddles and is not in this photo, but shown in the photo below.Once you’ve attached the bottom solder lug and Kep nut, position the center contact (on top) so that it floats between both paddle contacts before tightening down.Next, you’ll need to strip the supplied three conductor cable, tin the ends, and solder them to the three solder lugs. Check your radio manual to determine which side of the paddle to solder the tip and ring wires based on which side of the paddles will send dits and dahs.
Hint: when attaching the cable tie/strain relief, position the cable tie locking point so that it faces up rather than down (to avoid that part of the cable tie interfering with rubber feet contact.Next, attach the rubber feet to the base.And, finally, attach the rubber pads to the paddles
On the air
The building process was super simple as you can see from the photos above. I didn’t test the paddles in advance to make sure the shoulder washers were insulating the contacts properly, nor did I test that my ring/tip placement was correct before soldering. I would suggest you do this!
Fortunately, I plugged it into the Yaesu FT-817ND and it worked perfectly!
The paddles are lightweight and the action reminds me very much of Whiterook Paddles.
Any criticisms? For the price, these are brilliant. With that said, I wish the three conductor wire was just a bit heavier gauge. The conductors are very thin and I do worry how well they’ll hold with heavy use. Of course, it’s an easy process to replace this cable with one of my own. Also, like most lightweight backpack paddles, the thin metal sheet base needs to be held in place while operating.
I think I might attach the paddles directly to a clipboard. If I drill two holes in the paddle base, I could mount them with small bolts onto the clipboard and remove them when done. I’ll give this some thought.
For $25, the MJF-561K paddles are a no-brainer. I see keeping a set of these for ultralight operating and perhaps even as a set of backup paddles. And, hey! They’re a great stocking stuffer idea. I would suggest MFJ consider making a single-lever version as well.
I mentioned in a previous post that I recently purchased a Yaesu FT-817ND package from a friend. The Yaesu had a number of upgrades including an Inrad SSB filter. Thing is, I rarely need a filter when operating phone, but desperately need one for CW since the the default filter width is quite wide.
Although I plan to purchase a SOTAbeams Laserbeam-817, I’d still like a narrow mechanical filter for the one available filter spot on the FT-817ND.
It seems the YF-122CN (300 Hz Collins Mechanical Filter) is no longer manufactured. Used prices can be quite high.
I’m curious if anyone has suggestions for alternative narrow CW filters? Please comment if you have any advice!
Yesterday, my family decided to make an impromptu trip to one of our favorite spots on the Blue Ridge Parkway at Richland Balsam–the highest point on the BRP.
Of course, it was a good opportunity to fit in a Parks On The Air (POTA) activation, but I had also hoped to activate Richland Balsam for Summits On The Air (SOTA) simultaneously.
It being well beyond leaf-looking season, we had hoped the BRP would be relatively quiet, but we were wrong.
Trail heads were absolutely jam-packed and overflowing with visitors and hikers. We’ve noticed a sharp hiker uptick this year in western North Carolina due in no small part to the Covid-19 pandemic. People see hiking as a safe “social-distance” activity outdoors, but ironically, hiker density on our single-track trails is just through the roof. One spends the bulk of a hike negotiating others on the trail.
The trail head to Richland Balsam was no exception. Typically, this time of year, we’d be the only people parked at the trail head but yesterday it was nearly parked full.
Being natives of western North Carolina, we know numerous side-trails and old logging/service roads along the parkway, so we picked one of our favorites very close to Richland Balsam.
We hiked to the summit of a nearby ridge line and I set up my POTA station with the “assistance” of Hazel who always seems to know how to get entangled in my antenna wires.
“I’m a helper dog!”
Taking a break from using the Icom IC-705, I brought my recently reacquired KX1 field radio kit.
I carried a minimal amount of gear on this outing knowing that there would be hiking involved. Everything easily fit in my GoRuck Bullet Ruck backpack (including the large arborist throw line) with room to spare.
I took a bit of a risk on this activation: I put faith in the wire antenna lengths supplied with my new-to-me Elecraft KX1 travel kit. I did not cut these wires myself, rather, they are the lengths a previous owner cut, wound, and labeled for the kit.
With my previous KX1, I knew the ATU was pretty darn good at finding matches for 40, 30, and 20 meters on short lengths of wire, so I threw caution to the wind and didn’t pack an additional antenna option (although I could have hiked back to the car where I had the CHA MPAS Lite–but that would have cut too much time from the activation).
I didn’t use internal batteries in the KX1, rather, I opted for my Bioenno 6 aH LiFePo battery which could have easily powered the KX1 the entire day.
I deployed the antenna wire in a nearby (rather short) tree, laid the counterpoise on the ground, then tried tuning up on the 40 meter band.
No dice.
The ATU was able to achieve a 2.7:1 match, but I don’t like pushing QRP radios above a 2:1 match if I don’t have to. I felt the radiator wire was pretty short (although I’ve yet to measure it), so clipping it would only make it less resonant on 40 meters.
Instead, I moved up to the 20 meter band where I easily obtained a 1:1 match.
I started calling CQ POTA and within a couple of minutes snagged two stations–then things went quiet.
Since I was a bit pressed for time, I moved to the 30 meter band where, once again, I got a 1:1 match.
I quickly logged one more station (trusty N3XLS!) then nothing for 10 minutes.
Those minutes felt like an eternity since I really wanted to make this a quick activation. I knew, too, that propagation was fickle; my buddy Mike told me the Bz numbers had gone below negative two only an hour before the activation. I felt like being stuck on the higher bands would not be to my advantage.
Still, I moved back up to 20 meters and try calling again.
Then some radio magic happened…
Somehow, a propagation path to the north west opened up and the first op to answer my call was VE6CCA in Alberta. That was surprising! Then I worked K3KYR in New York immediately after.
It was the next operator’s call that almost made me fall off my rock: NL7V in North Pole, Alaska.
In all of my years doing QRP field activations, I’ve never had the fortune of putting a station from Alaska in the logs. Alaska is a tough catch on the best of days here in North Carolina–it’s much easier for me to work stations further away in Europe than in AK.
Of all days, I would have never anticipated it happening during this particular activation as I was using the most simple, cheap antenna possible: two thin random lengths of (likely discarded) wire.
People ask why I love radio? “Exhibit A”, friends!
After working NL7V I had a nice bunch of POTA hunters call me. I logged them as quickly as I could.
I eventually moved back to 30 meters to see if I could collect a couple more stations and easily added five more. I made one final CQ POTA call and when there was no answer, I quickly sent QRT de K4SWL and turned off the radio.
I still can’t believe my three watts and a wire yielded a contact approximately 3,300 miles (5311 km) away as the crow flies.
This is what I love about field radio (and radio in general): although you do what you can to maximize the performance of your radio and your antenna, sometimes propagation gives you a boost when you least expect it. It’s this sense of wireless adventure and wonder that keeps me hooked!
Yesterday, I *finally* activated two parks that have been on my list for most of the year: Elk Knob State Game Land (K-6903) and Elk Knob State Park (K-2728).
The game land had never been activated which I found quite puzzling since it seemed to be accessible based on my maps and was only 1.5 miles from (actually adjoining!) a state park which has been activated a number times.
Turns out, there’s a good reason it hadn’t been activated.
Elk Knob State Game Land (K-6903)
Upon entering the game land parcel, you’re greeted by the sign above which states that while the game land is a public resource, it is private land and the owner only allows hunting and trapping on it. First time I’ve ever encountered this.
This meant that I really couldn’t cross the barb wire fence that lined the one lane dirt road to activate the park in the woods (which I would have preferred).
Fortunately, I found one pull-off in the middle of the game land road. It was just wide enough to fit my car so that others on the road could pass me without a problem. It was rather tight, though.
Since I didn’t want to use a tree on the game land to support my antenna, I employed the Chameleon CHA MPAS Lite 17′ vertical.
I pushed the MPAS Lite spike into the ditch of the road and ran the counterpoise along the ditch as well. All was within the road right-of-way, yet within the game land so I felt it a proper compromise respecting the land owner’s wishes while still being able to activate the park.
For this activation, I chose the Elecraft KX2 since I had such a limited space in the back of my car to both operate the transceiver and log.
The great thing about the KX2 is it’s such a complete & compact package: it’s a transceiver, with an internal battery pack (that allows 10 watts of power), a built-in ATU, and attachable paddles. Everything easily fits on my clip board which then functions as an operating table.
I started calling CQ POTA and was quickly spotted to the POTA spots page via the Reverse Beacon Network (RBN).
I very quickly logged a number of stations in CW, but did eventually reach one road block when one of the contact posts in my KXPD paddles loosened. I’ve had this happen before. Thankfully, I keep precision screwdrivers in my EDC bag, so could make the fix. Unfortunately, it took me off the air for a good 5-10 minutes and I lost my pile-up.
I eventually changed modes and called CQ a few times on 40 meters phone.
In the end, I only logged 13 contacts. Certainly the smallest number I’ve ever had at an ATNO (All Time New One). I felt I had to cut it short, though, as cars/trucks had to slow down to pass me. Twice I was asked if I needed any help (assuming my car had broken down).
I was very grateful to have the CHA MPAS Lite antenna in my arsenal, though. I have few other antenna options that would have worked so effectively in such a tight space.
The MPAS Lite is also incredibly stealthy. I’m not sure many passersby even noticed it.
On to the next park!
Elk Knob State Park (K-2728)
Where Elk Knob Game Land was an incredibly challenging site, adjoining Elk Knob State Park was the complete opposite. A POTA activator’s dream site.
This was my first visit to Elk Knob State Park and I was most impressed. Not only is the park gorgeous and quiet, but the picnic area is expansive, well-spaced, and there are numerous large, old-growth trees. Absolutely perfect for POTA purposes.
The CHA Emcomm III Portable
Since I had the luxury of these tall trees, I decided to employ the CHA Emcomm III Portable which has quickly become my favorite field antenna. When I have the space, I use it because it gives me 160-6 meters and is easily matched by all of my antenna tuners.
Since I had a great picnic table surface to operate, I also used my Icom IC-705 transceiver and Elecraft T1 antenna tuner.
So turns out, I didn’t take a lot of photos of my site because I used my iPhone to make a video of the activation.
On YouTube, I’ve been encouraged by viewers/followers to continue making real-time, real-life videos of some of my park activations. These videos have no edits and are what I would generously call “Ham Radio Slow TV.” 🙂 The idea is the viewer is simply joining me as I set up and operate at a park–as if they were there with me in person. I hope there’s some value in these videos for newcomers to Parks On The Air.
The video ended up capturing the whole activation from start to finish. If you need something to put you to sleep, check it out:
Video
All in all, it was a brilliant day and I’m pleased to have finally activated these two POTA sites.
It was a particular treat to discover Elk Knob State Park. I can’t wait to go back there to camp and to hike their trails.
Perhaps this is one of my favorite side benefits of Parks On The Air: it gives me a reason to explore state parks I might have otherwise overlooked. We’re huge supporter of state and national parks, so it’s truly a win-win!
In a previous post, I mentioned that I had regretted selling quite a few radios.
Almost immediately after publishing that post, I purchased an Elecraft KX1. It was an impulse purchase, and I’m happy I made it.
Then, a couple weeks ago, my buddy Don discovered I was considering purchasing the Yaesu FT-818.
He mentioned that he had a very lightly used FT-817ND with a lot of extras he would appreciate selling me. I agreed without hesitation.
The package included:
Yaesu FT-817ND
Inrad SSB 2.0 kHz narrow filter
Massoft Mylar speaker (installed)
Anderson Powerpole adapter on rear of chassis
Yaesu PA – 48B Charger
Portable Zero FT-817 ESCORT bracket and side rails in black
Portable Zero Sherpa Backpack
Nifty Mini Manual
Yaesu FNB 85 1400ma
All original accessories and antennas
Don offered a fair price for the package, so how could I resist? (Hint: Don’t answer that!)
Besides completely trusting Don as a seller, I must admit that the FT-817 Escort side rails were a big selling point. I’d planned to purchase those regardless. Having owned the original FT-817–what, 20 years ago?–I knew I wanted something to protect this radio in the field. Not only that, but the FT-817 needs a proper bail in my opinion and the Escort delivers!
Blue Ridge National Parkway (K-3378)
Saturday, I had one goal in mind: split some firewood at my father-in-law’s house. But I had to pass the Blue Ridge Parkway (K-3378) en route, so why not a quick activation too, right–?
Packed the FT-817ND and, since I needed to fit in a quick deployment, the CHA MPAS Lite antenna.
Talk about getting reacquainted with an old friend: I haven’t operated an FT-817 in at least 18 years!
I was on the air perhaps 35 minutes or so. It was a lot of fun and some trial by fire as I quickly sorted out my CW and phone settings live on the air.
I very quickly made contact with my buddy Eric (WD8RIF) in a park to park contact (thanks, Eric!).
After that, a CW contest started up and I quickly realized how important it will be for me to get a narrow CW filter for the FT-817ND. It was as if 10 stations were sharing the frequency with me. (Any advice on filters would be much appreciated!)
I only managed to collected the 10 contacts needed for a valid activation and, for the first time, relied on my daughters (both licensed) to help snag my 10.
Propagation was poor on Saturday. Since I was in a hurry to get the wood split–and was running behind–I didn’t hang around to work more than 10 stations. Plus, no one “needs” the Blue Ridge Parkway these days since it’s activated so frequently.
This activation was a brilliant shake-out for the FT-817ND field kit. I created a few to-do items:
Perform some TX audio tests and tweak the mic settings at home–I feel like the mic gain might have been a bit low.
Sort out the AGC and sidetone settings in CW and decide if I want to run full or semi break-in. Between the relay clicks, AGC recovery and gain settings, I found full break-in a little distracting with the lower sidetone volume I had set Saturday. This can be easily adjusted and then it’ll sound great.
Dedicate a small external battery pack for the FT-817ND kit. I might purchase another 6aH Bioenno pack especially since it fits in the Sherpa pack side pocket so well.
I have the accompanying internal battery pack, but have yet determined how much capacity it still has.
I’m so happy the ‘817ND has re-joined my field radio family! I’ve missed this fine little rig!
In my head, this was going to be a post talking about antenna compromise vs. convenience vs. performance. I set out to make a point and will do just that. But it’s not the point I intended to make.
The Elecraft AX1 Antenna
My Maxpedition Fatty Pouch has more than enough room for the AX1, tripod adapter, bipod, antenna, 40M section, and two counterpoises.
For those of you not familiar, Elecraft designed a super compact portable antenna for the KX3 and KX2 called the AX1 a couple years ago. It’s, by far, the most compact HF antenna I’ve ever owned or operated.
What makes it so unique is that no one section of it is longer than 6″, which means when disassembled, it’ll fit in a very small pouch or pocket.
I purchased the AX1 a couple months ago. I bought the antenna, (which handles 20/17 and 15 meters), the 40 meter extension, bipod, tripod mount, and both counterpoises were included.
It’s a cool piece of antenna kit for sure! And so compact!
But let’s face it: it’s a compromised antenna!
An antenna this small and compact is not as efficient as a longer resonant wire antenna. Not even close.
The AX1 wasn’t built for performance per se–although it’s as efficient as it can be for the size–it was built for convenience!
You can set the AX1 up anywhere, anytime.
A POTA Experiment
The AX1 is in the Maxpedition pack on the left, my KX2 in the Lowe pack on the right.
A few months ago, a reader who owns a KX3 asked me if I thought he could successfully activate a (Parks On The Air) park with the AX1.
My reply:
“Sure! Especially if you’re using CW and you have a whole lot of patience.”
Yesterday morning, I decided to test my theory.
I drove to the Blue Ridge Parkway (K-3378) and parked at the Folk Arts Center. I found a picnic table (wasn’t hard at all considering it was hovering around freezing and incredibly breezy!) and set up my station.
It takes me maybe 3 minutes to set up the entire station.
The antenna fits together quickly (I was operating 40 meters, so used the optional extension and 31′ counterpoise).
Three minutes later, I’m ready to rock and roll!
On The Air
I had errands to run in town so didn’t want to spend all day doing this experiment, but I was determined to complete a valid POTA activation which requires 10 total contacts.
Before leaving the house, I scheduled my activation on the POTA site, so it would know to scrape my spot on the Reverse Beacon Network.
Keep in mind, this was taking place on a Monday morning around 10:15 AM and I was activating a park almost every POTA hunter has logged numerous times. The Blue Ridge Parkway is one of the most activated parks in the POTA network, so not exactly super desirable.
In addition, propagation number were pretty dismal.
I fired up the KX2, pressed the ATU button, and achieved a 1:1.1 match.
I called CQ POTA three times in CW.
Evidently, the RBN picked me up quickly, because I received a call.
Then another call.
Then a small pile-up of calls.
Next thing I know, I’ve logged five stations in five minutes.
I called CW again, and had another small pileup.
Short story short, I had achieve a valid activation in all of 12 minutes.
12 freaking minutes!
Seriously? My point was to prove it takes patience when using extremely compromised antennas.
After logging 12 stations, a received a phone call on my mobile and left the air (no other stations were calling me at that point and, again, this wasn’t a highly desirable or rare park). After my phone call, I decided to pack up and finish my errands in town.
After I returned home, I realized: this was easily my quickest field radio deployment and park activation.
The activation took me a total of 20 minutes: 3 minutes to deploy, 12 minutes on the air, and (generously) four minutes to pack up.
Let’s face it…
The stars were aligned Monday morning.
The AX1 is a compromised antenna but it’s obviously also quite effective.
The irony was en route to the activation, I was listening to the latest episode of Ham Radio Workbench. They were discussing wire antennas and how incredibly compromised shortened verticals are.
I was in complete agreement about compact antennas: sometimes, the compromise is worth it for the convenience.
Now, I would add: sometimes, it’s all convenience, performance, and no compromise whatsoever!
Next, I plan to attempt an SSB activation with the AX1. I do believe it’ll take quite a while to gather 10 stations for a valid activation. But who knows?
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There are two designs: one with an on/off switch, and a newer version without an on/off switch that has auto power save. Both circuits are the same but the software for the PIC chip is different. If you build the one without the on/off switch there is a very specific sequence of connecting and disconnecting the device and it’s my opinion that the one with the on/off switch is the version that makes more sense to build. It shouldn’t matter which order you connect everything up and you simply throw the on/off switch to turn the device on and off.
