Sometimes I get excited over some of the most trivial things. This is one of those times.
I wrote about my Junk Box Loading Coil in a recent post. I normally keep the loading coil and my 12-foot telescopic whip antenna stashed away under the backseat of my pickup truck, so it’s handy for spur-of-the-moment activations. I also keep a couple of Jackite poles and some other gear under there. While the coil is pretty rugged, I just didn’t feel right about cramming it in there unprotected. By pure dumb luck, however, I stumbled on the perfect storage solution.
While mindlessly browsing the Internet a while back, I stumbled across something on a Chinese seller’s website (Temu.com) that caught my eye. It was a storage case that was probably made for something no longer sold. I’d provide a link, but products quickly come and go on this website. The website listed it as “Simple Portable Storage Zipper Bag, Travel Electronic Tools Organizer, Zipper Container.” Wow. That’s a mouthful.
I had seen similar cases on eBay, but not in this particular size. Given the listed dimensions, I thought it might be a good fit for my homebrew loading coil. At the time I placed my order, it was selling for $7.98 USD.
This is the case I bought to use with my Junk Box Loading Coil.
The container, along with a few other things I ordered, arrived on my front porch eight days after I placed my order. Voila! The case was a perfect fit for my loading coil. In fact, it looks like it was custom made for it. It’s semi-rigid, so it affords some degree of protection. It’s definitely not elephant-proof, though. There’s an elastic strap inside that helps hold everything in place.
My Junk Box Loading Coil tucked away in its new storage container
I’m not exactly sure what this case was intended to house, but it’s perfect for my application. So now, my coil will stay clean and protected, while waiting under the backseat of my truck for my next POTA activation.
Our family had to postpone our Thanksgiving get-together until the weekend. So that gave my (far) better half and me a quiet day to ourselves. What better way to celebrate a holiday than a POTA activation?
My destination today was Marsh Creek State Park (K-1380, KFF-1380), one of my favorite local parks. As I was walking out the door, my (far) better half told me, “You shouldn’t expect too many contacts because of the holiday.” Ha! After being married to a ham for 46 years, you would think she would know better. A holiday is just an opportunity to get on the radio instead of working!
My rig today was my old YouKits HB-1B. After I bought it through Ten Tec 10 years ago, it was my go-to portable rig. In recent years, I’ve been taking it along on trips as a backup rig, but it hasn’t seen much air time.
The HB-1B has a canned “CQ” CW message, but no programmable memories. I brought my old NorCal keyer along to take care of that. Since the HB-1B also lacks an internal tuner, I used my Elecraft T1. Actually, this was a portable configuration I have used many times years back. Antenna-wise, I went with my 12-foot whip and homebrew loading coil on the back of my truck.
My old YouKits HB-1B transceiver, along with my Elecraft T1 ATU and NorCal keyer
The HB-1B never had the cleanest sounding sidetone; but using a LiFePO4 battery (around 13V), the sidetone had some loud clicks. Over the years, the display also developed some kind of mark or smudge that is very noticeable at some viewing angles. Neither of these issues were a show-stopper for me.
I started out on 40M and seemed to get out well enough. After the first eight contacts, though, the band seemed to dry up. I moved up to 20M, and things picked up. Although it took 20 minutes to get my first 10 contacts, there was lots of activity on the 20M band. The power output is slightly lower on 20M (approximately four watts), but I still collected 32 contacts there. I picked up a few more on 30M before calling it quits.
My view of the lake in Marsh Creek State Park (K-1380, KFF-1380)
In less than 90 minutes on the air, I ended up with 50 contacts (with one dupe). There were no park-to-park or DX contacts today. (I neglected to post a spot for the WWFF folks.)
Despite its shortcomings, the little HB-1B gave a good accounting of itself. It’s still a worthy backup rig, and I need to put it on the air more often.
Finally, to all those celebrating, have a happy and safe Thanksgiving.
Looking through some files recently, I came across the sales invoice for my old Yaesu FT-817. According to the invoice, my FT-817 was 20 years-old back in May. The ‘817 hasn’t seen much use lately, so I set out to change that.
I first saw the FT-817 at an Atlanticon QRP convention back in 2001. The FT-817 had just come out, and I wanted one the moment I saw it. It wasn’t until two years later that I finally pulled the trigger and bought one. The FT-817 became my main rig for many years, both at home and in the field. After I bought my Elecraft KX3, the FT-817 was only saw infrequent use in the shack.
The early FT-817s were plagued with a tendency to blow the finals. Sadly, mine was no exception. Despite being very careful, my finals went belly-up during a camping trip in 2006. I sent my rig back to Yaesu for repairs, and they installed the newer, more robust finals used in the FT-817ND. It’s been fine ever since—knock on wood.
Initially, I used my homebrew Z-match tuner with the FT-817. In 2009, I bought the LDR Z-817 auto tuner, which was designed specifically for the FT-817. The Z-817 certainly made tuning up a lot faster.
A while back, I tried to program some new repeater frequencies using Chirp on my laptop. Windows informed me that the chip in my old FT-817 CAT cable is no longer supported. I bought a new cable on Amazon, and I was soon back in business.
To prepare for today’s outing, I put fresh batteries in the Z-817. Since the FT-817 doesn’t have a memory keyer in it, I dug out my old NorCal Keyer. I built the NorCal Keyer from a kit not long after I purchased the FT-817, so it is also 20 years old. I gave the keyer a set of fresh batteries and programmed one of the three memories with a “CQ POTA” message.
With my trusty FT-817 in tow, I drove over the Valley Forge National Historical Park (K-0761, KFF-0761). I parked my truck in a spot that had a picnic table about 10 feet behind it. That allowed me to set up my homebrew 19-foot vertical on the truck and run an 18-ft length of RG-8x over to the rig.
My 20 year-old Yaesu FT-817 back in the field at Valley Forge National Historical Park (K-0761, KFF-0761). The blue box in the foreground is my NorCal Keyer, which I built from a kit 20 years ago.
Before starting my activation, I did some testing. The FT-817 and Z-817 combo played well with the vertical. I was able to easily get a good match from 40M through 10M. The earbuds I used were more sensitive than the headphones I use at home, so the sidetone was louder than I’m accustomed to. Unfortunately, I couldn’t remember how to adjust the sidetone volume, and I neglected to pack my little FT-817 cheat sheet. So, I just pulled the earbuds out a bit and continued on.
Since the picnic table was only 10 feet from my truck, I was able to use my homebrew 19-foot vertical.
Once I got going, using the FT-817 brought back a lot of memories of portable outings from years ago. Happily, the old rig still works like a charm.
Despite some fading on the bands, contacts came easily. In a little more than an hour, I made 21 contacts with four park-to-park QSOs. Most of my contacts were on 40M and 20M, with one contact on 30M (a P2P). I also had a contact with W1AW/0, but the operator didn’t give his location.
It was a lot of fun getting my trusty FT-817 back out in the field again. The FT-817 isn’t my oldest QRP rig; that honor goes to my 30 year-old MFJ-9030 transceiver. I definitely need to dust off more of my old rigs and give them some QRP-portable love.
I bought the Evolve III Maestro E-Book about nine months ago. Having used it for various ham radio applications during that time, I thought I’d offer some updated thoughts on this inexpensive laptop.
Spoiler alert! There really isn’t anything I dislike about the Evolve III laptop. Sure, it’s not the speediest machine ever built, but it has stood up to every task I’ve thrown at. I regularly use it at home for Winlink, NBEMS, and VarAC. I’ve also used it for these modes in the field for ARES-RACES exercises.
The Evolve e-book in use during this year’s Field Day
Power Considerations
Besides its small size and low cost, the thing I like best about the Evolve III is its battery life. Depending on what I’m doing, I can get eight to ten hours of run time. That’s way more than I need for my typical portable outings.
Since the “wall wart” charger it came with outputs 12VDC, I can charge the laptop from a 12V battery. For charging in the field, I bought a 6-foot cable on Amazon that has a 3.5mm x 1.35mm coaxial power connector on one end. On the other end, I added a 12V accessory plug (cigarette lighter type). I also built a second cable with an Anderson Powerpole connector.
A charging cable I built with a 12V cigarette lighter type plug
A 12V charging cable I built with a Powerpole connector
For Field Day, I operated all day without having to charge the laptop. I couldn’t have done that with other laptops I have used in the past. Before turning in for the night, I connected the Evolve to a 17 A-H gel cell battery to charge it overnight. (I had a fused 12V socket installed on the battery.) When I woke up during the night, it was fully charged, so I disconnected it. The Evolve lasted the rest of Field Day without further charging.
Field Day Configuration
My Field Day configuration made full use of the Evolve’s capabilities. I used it for logging, connecting to our shared log file via Wi-Fi. I also used one of the two USB connectors to drive my WKmini Morse interface to send CW with my KX3.
Since I only had one more USB connector available, I used a 3-way USB splitter to accommodate the other devices I needed to attach. I had the receiver for my wireless mouse attached to one port on the splitter and the KX3’s rig control cable connector to another port. I used the third port to connect a thumb drive, which I used for exchanging files with another Field Day participant.
This is a USB splitter I bought at Staples years ago. The extra USB ports came in handy during Field Day.
For backups, I had my N3FJP Field Day logger configured to save backup files to an SD card. Since my backup files included the entire networked log, I had everything I needed to submit our group’s entry on my laptop when I got home.
With all that going on, the Evolve performed flawlessly.
Some Additional Thoughts
I recently heard from a couple of hams who received Evolve laptops with a USB-C charging port. This is a recent design change, I suppose. I don’t have any hands-on experience here, but I think this might actually simplify things in the field. A 12V socket connected to the battery and a commercial 12V cell phone car charger should be all you need to charge the Evolve. Most cell phones and devices seem to favor the USB-C connectors these days, so suitable 12V car chargers are easy to come by.
So, if you couldn’t tell, I’m a big fan of the Evolve III Maestro E-Book. So far, I feel the $89 I paid for it was money well spent. I’m hoping I can get several more years of good service from it.
Regular readers of this blog know that my homebrew 19-ft vertical is my go-to antenna for “stationary-mobile” operations. I use a low-tech mounting system in the bed of my truck involving a plastic milk crate, a cargo bar, and some bungees. When we go on our annual vacation to North Carolina, unfortunately, I have to remove the crate to free up storage space. I plan to activate a park or two while on vacation this year, so I wanted to come up with an alternate antenna arrangement.
I bought the GRA-7350TC antenna with this specific scenario in mind. Previously, I tested this antenna with a magnetic mount that I had stashed away in the basement. Although a couple of successful POTA activations proved its viability, I wanted something better than my little mag mount.
Browsing around on Amazon, I found a stainless steel bracket with an SO-239 to ⅜-24 mount. I was reluctant to drill holes in my truck, but I thought a couple of small holes in the truck’s bed wouldn’t be too bad. So, I placed an order.
The Sirio M1 stainless steel antenna mounting bracket I found on Amazon
The bracket arrived the next day. It’s really heavy-duty and possibly overkill for my application. My local hardware store had an excellent selection of stainless steel hardware. I bought some #12 x 1-inch sheet metal screws and some star washers.
The next step was figuring out exactly where to mount it. I had to make sure that I could still close the truck bed cover without hitting it. By dumb luck, I chose a spot where I could use one of the screws that fastens the truck’s bed liner. This placed the mount close to where I wanted it. Then, it was a quick task to drill pilot holes for the three additional screws. Mechanically, it felt solid, and an ohmmeter check confirmed continuity to the truck’s body.
The bracket installed in the bed of my truck with the antenna installed. The black screw is an existing screw I took advantage of.
I gave the new mount a trial run at Ridley Creek State Park (K-1414, KFF-1414). It took me about a minute to get the antenna set up on the mount, and it was a perfect fit. I ran an 18-foot length of RG-8x coax (much longer than I really needed) to the Penntek TR-35 inside my truck.
Using an antenna analyzer, I first tuned it up on the 40M band. I couldn’t get the SWR down below 2:1. This also happened when using the antenna on a magnetic mount, too. I’m guessing a different length of coax or a counterpoise wire might help. In any event, I tuned the antenna to resonance and used a tuner to keep the rig happy. The first QSO was a station in Georgia who gave me a decent signal report.
The Gabil GRA-7350TC antenna in use
The SWR on 30M was a bit lower but still above 2:1. Again, I had no problems making contacts with the antenna. On 20M and 17M, the SWR was down to about 1.2:1 or thereabouts.
Despite the time spent fiddling with the antenna, I logged 13 contacts, with three park-to-park QSOs. I also worked W1HNJ on 40M and 30M. As part of Museum Ship Weekend, they were operating the radio console from the hospital ship, SS Hope. The radio console is now part of the Chatham Marconi-RCA Wireless Museum on Cape Cod, Massachusetts.
I still have some tinkering to do, but I think the mounting bracket will work just fine. I won’t be retiring my homebrew vertical anytime soon, but the GRA-7350TC gives me another option when the need arises.
During a POTA activation a few days ago, I was in the middle of a QSO when my Palm Mini paddles started behaving erratically. I knew right where to look for the cause of the problem.
The Palm Mini paddles have been my go-to paddles in the field for many years. Although the German manufacturer, Palm Radio, is no longer in business, they are still the only paddles I take along for portable work. They are compact, have a great feel, and work perfectly with the clipboard arrangement I use in the field. I loved the first set I bought and later acquired a second set.
These great little paddles have one weakness: the cable connection. The three-pin connector is similar to standard header pins with a two-piece plastic backshell held together with a tiny screw. Once inserted into the paddles, there’s no locking mechanism to hold it in place. It’s definitely not the most rugged arrangement. After my first encounter with cable issues, I ordered a couple of replacement cables. Sadly, that’s no longer an option.
During my most recent episode of cable problems, the connector backshell had fallen apart, leaving the tiny wires exposed. I grabbed a spare cable and was back in business in short order.
Fortunately, after some searching, I found the two backshell pieces on the floor of my truck. The screw that holds the backshell together goes into a threaded boss, which had broken. I encountered an identical failure on another cable a couple of years ago, so I knew how to deal with it.
After I got home, I carefully checked the wire connections and confirmed that they were still intact. So this time, the fix was just to reassemble the backshell. Since I could no longer screw the two halves back together, I had to resort to drastic measures. I call this the “final fix.” Once implemented, it can’t be undone.
This photo shows the rear of the Palm Mini Paddles (left). On the right is the connector I repaired by gluing it back together. In my haste to repair the cable, I neglected to take pictures of the inside of the connector.
I positioned the connector in the bottom half of the backshell and re-checked the connections. Then, I applied a dollop of Goop™ adhesive inside the backshell and put the top half on. The Goop™ filled the inside of the backshell, holding it all together and providing some additional strain relief for the tiny wires. After cleaning off the adhesive that squeezed out during assembly, I clamped the backshell overnight. The next morning, I gave it a test and confirmed that everything was still working.
I’ve seen webpages describing ways of replacing the fragile connector with something more robust. I’m not quite ready to perform major surgery on my beloved Palm Mini paddles. Someday, I suppose, I’ll have no choice.
I looked at my log the other day and saw that I had only made a measly two HF contacts this month. Between the grandkids’ school functions, soccer games, horseback riding competitions, and my knee issues; I haven’t had much time for my QRP-portable activities. I set out to change that this morning with a drive to Valley Forge National Historical Park (K-0761, KFF-0761).
A few weeks ago, while nursing my injured knee, I made an impulse purchase. After watching some YouTube videos, I went on Amazon and bought a Gabil GRA-7350TC antenna. The last thing I needed was another antenna—I blame YouTube and Amazon. Actually, it wasn’t a totally frivolous purchase; I have plans to use it during a trip later this summer.
I also bought the matching GRA-ULT01 MK3 tripod for the antenna, which I planned to try out today. I put together some radials to use with the tripod setup.
As I headed out the door this morning, I grabbed an old magnetic mount base I had from an 2M/440 antenna. Since I bought the GRA-7350TC with the ⅜-24 stud mount, the antenna was a perfect fit for the mag mount. I figured I’d give that a try, while I was trying out the antenna.
It was raining when I got to the park this morning, so I kept things simple and tried out the mag mount. In doing so, I learned something about my six-year-old truck: The hood isn’t made of steel. The rest of the truck is, but not the hood. Who knew? (Probably every Chevy Silverado owner but me, I guess.) I ended up putting the antenna on the roof where I could easily reach it. Inside the truck, I used my Penntek TR-35 (5 watts).
The Gabil GRA-7350TC on a magnetic mount from an old 2M/440 antenna.
The sliding coil adjustment made tuning up a snap. Using my old MFJ-226 antenna analyzer, it only took a minute or two to get the antenna tuned up on 40M. I’m not a big fan of having to take an antenna analyzer out in the field, but this was relatively painless. Band changes only took about a minute. Most of that time was setting up the antenna analyzer for the band of interest.
I used the new antenna on 40M, 30M, and 20M with decent results. In the end, I had 16 contacts, including five park-to-park QSOs. I’m sure my little magnetic mount wasn’t providing the best ground in the world, but at least I know it’s usable in a pinch.
Hopefully, June will provide more opportunities to get out portable. Since my old knee has been feeling a little better recently, I’m hoping to get back on the bike again at some point. I already have some ideas for a bike mount for the GRA-7350TC.
I made a quick run down to Ridley Creek State Park (K-1414) for an early morning POTA activation. For a few minutes, though, I thought I might fall short of the 10 contacts needed to complete the activation.
I dusted off my old MFJ-1820T 20M whip antenna and thought I’d try it out on my window mount. Inside the truck, my Elecraft T1 tuner loaded it right up. After calling CQ a few times, I checked the Reverse Beacon Network (RBN). The first spot I received was from Costa Rica. So, the antenna seemed to get out OK. I was running about five watts from my TR-35.
The MFJ-1820T 20M whip on my old window mount
Things got off to a good start on 20M. I had a steady stream of callers for the first several minutes, and I was getting strong RBN spots to the west of me. Then, things slowed down. It was five minutes before the next QSO. Then another six minutes after that. I was beginning to consider the prospect of a busted activation when activity picked up again. I suspect it was just a bit too early on a Sunday morning.
After I had 11 contacts in the log, I switched to the Elecraft AX1 to give 17M a try. I didn’t hear much activity there, and the RBN wasn’t seeing me at all. I stayed with the AX1 and went back to 20M.
The activity on 20M started picking up this time around. When I wrapped things up, I had 20 contacts in the log, with two park-to-park QSOs. I didn’t have any DX contacts today, but I did work two Idaho stations.
I continue to be amazed at what you can do with five watts and one of these little whip antennas.
Since I purchased the Raddy RF750 Portable Multimedia Player a year ago, it has become my favorite portable receiver. So, when the folks at Radioddity asked me if I’d like to have a look at a new upgraded version, I jumped on it. The new radio is the Radioddity RF75A Shortwave Radio, and it includes some interesting new features.
[Disclaimer: In the interest of full disclosure, Radioddity sent this radio to me free of charge to evaluate and review. However, the opinions expressed here are entirely my own and were not influenced by the vendor.]
What It’s All About?
Like its predecessor, the RF75A is a multimedia device. It covers the AM, FM, Shortwave, Weather, and VHF bands. In addition, you can play audio files from a micro SD card. In Bluetooth mode, it’ll play audio from an external source. You can also connect a computer to the USB connector and use the RF75A as a speaker.
FM: 64-108MHZ (Step Value: US: 10KHZ, EU: 9KHZ) AM: 520 -1710 KHz SW: 4.75 – 21.85 MHz WB: 162.400 – 162.550 MHz VHF: 30 – 199.975 MHz TF Card Max Capacity: Max 256GB Audio Format: MP3, WAV, WMA Size/Weight: 3.6’’ x 2’’ x 1” / 3.7 oz Components & Accessories: 1 x RF75A, 1 x Storage bag, 1 x Lanyard, 1 x Wire antenna, 1 x Type-C cable, 1 x Earphone
The internal 1000mAh battery is charged via a USB-C connector, which is handy for a portable radio. The RF75A also has a built-in flashlight and an “SOS” mode. In the SOS mode, the flashlight flashes and the radio emits an ear-piercing siren.
At the time this post was written, the RF75A was selling on the Radioddity website for $52.99 (USD).
The Raddy RF75A from Radioddity
Major Improvements in the RF75A
While the basic functions of the RF75A and RF750 are similar, there are some big changes in the RF75A. The first thing you’ll notice is the digital display and digital tuning. I found the analog tuning on the RF750 a little touchy and the frequencies hard to read. The RF75A’s digital tuning makes tuning much easier.
One interesting improvement in the RF75A is an app that lets you control the radio from your smartphone over a Bluetooth connection. While the RF75A is pretty simple to operate as it is, the app makes it even easier.
Screenshot of the RF75A Android app, which allows you to control the radio from your smartphone.
My Impressions
The first thing that struck me is the RF75A’s small size. It’s smaller than an Altoids tin and thinner than the RF750, so it’ll easily fit in your pocket.
The Raddy RF75A (left) compared to the RF750. Besides the digital display and controls, the RF75A has a slimmer profile making it more “pocket friendly.”
Like the earlier radio, the sound quality is impressive. Listening to the FM band, the sound through the speaker has a rich sound you wouldn’t expect from such a small radio. The supplied earbuds are comfortable and also sound great to these old ears. The RF75A seems to have a little less bass than the RF750, but the sound is still very good.
I found the reception on the AM broadcast band to be very good, easily pulling in local stations. Because of high noise levels, my home location isn’t the best place for testing the shortwave bands. However, using the scan function, I was able to find several shortwave stations. I should note that the RF75A only receives in AM on the shortwave bands. So, if you want to listen to SSB or CW signals, you’ll have to look elsewhere. It comes with an antenna wire (approximately 10 feet long) that you can clip onto the built-in antenna to improve reception.
On the VHF band, I programmed in some local 2M repeaters and a few public service frequencies to test it out. Using the buttons on the radio, I found the tuning steps too coarse to zero in on some frequencies. Using the app, however, it was a simple task to enter the frequencies and save them as presets. Reception was good, but there’s no squelch setting. So, you’ll hear some background noise between transmissions.
The memory card function works great and gives you a choice of four different play modes. I set it to play my MP3 files in random order. You can also choose from six different EQ settings. Using the RF75A’s Bluetooth mode, I was able to pair it to my cell phone and play audio files that way.
I also tested the alarm function. I like having the option to have the radio turn on instead of sounding an alarm. The alarm sound is a loud series of beeps, so I’d rather wake up to music.
The smartphone app is easy to install and makes it easy to operate the radio (especially for my old eyes). The Android version of the app, however, requires the manual download and installation of a .apk file. I would feel safer getting the app through the Google Play store, instead of downloading it from an unfamiliar website. Apple iPhone users, however, can get the app from the Apple app store.
Once installed, the app requires access to your phone’s location in order to pair with the RF75A. I’m not sure why the Bluetooth pairing depends on location. In any event, I only allow access to the phone’s location when I’m actually using the app, and I close the app when I’m not using it.
While the Operational Guidelines booklet provided with the radio is sufficient to get you up and running, it’s not without some issues. The wording is confusing in some places, and I came across a few errors and formatting issues. Despite these editorial shortcomings, I had no problems figuring out how to use the radio.
The Radioddity website claims 7-8 hours of use from the 1000mAh battery. I haven’t actually measured it, but that seems about right. The USB-C charging port is handy, too. I can charge it using my cellphone charger or a portable power bank when I’m camping.
The last function I evaluated was one of the more important features for me: the weather alert function. To test it out, I set up the RF75A in the “Alert” mode in time for the weekly NOAA Weather Radio test. The alarm went off as expected, and boy, did it ever go off! Like the RF750, the weather alert triggers an extremely loud siren. Along with the siren, the light on top of the RF75A flashes, just like the SOS mode. I really wish there was the option to just activate the weather radio in response to an alert. Or, at the very least, be able to adjust the volume of the siren. As it is, I can’t imagine using it in a campground at night.
The Bottom Line (for me, at least)
All in all, I really like this little radio. It’s small in size, weighs next to nothing, and sounds great. I like that it’s simple to operate without having to navigate through a bunch of menu options. The smartphone app is a terrific improvement that further simplifies things.
Since I received it, the RF75A has seen a lot of use around the house, and I plan to take it along on camping trips and travel. Now, if there was only a way to tone down that weather alert, I’d be a very happy camper.
Inspired by some blogs I follow, I’ve recently dusted off my Elecraft AX1 antenna and started putting it to use. Until now, I’ve kept it stashed away in my backpack as a backup antenna that I’ve never needed.
So far, I’ve used this versatile little antenna a couple of ways. Most recently, I’ve used it with an old window mount, while operating “stationary-mobile” in my truck. I’ve also used it while “picnic table portable,” using an Elecraft AXT1 tripod mount and my little Ultrapod tripod. If I’m using my KX3, I can use the AXB1 BiPod Mount to support the antenna.
One other use case I wanted to address is operating “bicycle portable.” If I’m out on a bike ride and stop for some radio, it would be handy to use the bike to support the AX1. Browsing around on eBay, I came across an interesting camera mount clamp that looked like it might work well with the AXT1.
I found this gizmo listed as a “clamp mount ball head” from a company called, SmallRig. It’s a clamp with a standard ¼-20 camera mount, and it works perfectly with the AXT1 tripod adapter. I can fasten the clamp to the handlebars, to give the AX1 some elevation. I would post a link for the clamp, but eBay listings come and go too fast. However, if you search for “clamp mount ball head,” you should find lots of them from a variety of sellers.
This is the camera clamp I used. When coupled with the Elecraft AXT1 tripod mount, it made for a very versatile mount for my AX1 antenna.
To test it out, I packed my radio gear and headed out for my first bike ride of the year. I rode a few miles on the Schuylkill River and Perkiomen trails to a local park.
The AX1 mounted on the handlebars of my bike.
I set up my TR-35 on a bench in the picnic area and mounted the AX1 on the handlebars of my bike. Even with the bike leaning, the clamp’s adjustable swivel allowed me to keep the antenna vertical. I used two radials clipped to the AXT1 tripod adapter with an alligator clip. A six-foot length of RG-8x coax was more than enough to reach the rig. I was on the air in about 3 minutes.
My setup in the park with my AX1 bike mount. I used two 12.5-foot radials attached to the AXT1 tripod mount with an alligator clip.
The T1 tuner easily tuned up on the 20M band. During my brief stop in the park, I worked POTA stations in Virginia, Illinois, and Georgia. Pleased with my new bike mount, I packed up and continued on my ride.
I have a feeling I’ll be taking this handy antenna setup along on more bike rides in the future.
WB3GCK QRP Amateur Radio 