For those of us not fortunate enough to own an Elecraft KX series or KH1, I have a project that is a quick and dirty way to anchor your magnetic key to a clipboard. All that is needed is a fender washer from the hardware store and a hot glue gun. The best (ie, most magnetic) washer was the one marked ‘ALB’, but just take your key with you and try out what they have. If you find one you have to slide off, that’s getting there.
1) Affix the washer to the clipboard with hot glue. I recommend heating the washer with a heat gun first so you have time to reposition it if desired.
2) Put the washer on your key, and the glue on the washer. Position and press, and avoid moving it around while the glue cools (about a minute). If you do need to reposition it, remove the key, heat with the heat gun, replace the key and reposition.
I’m right handed so the key is on the right so I don’t hit it when I’m logging.
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In case you are wondering about the chip in the carrier, I am working on a cordless interface between the key and a CW decoder for the IC-705. The plan is it will use the IC-705’s bluetooth connection to send audio to a Pi Pico for decoding, and then it will send back dits and dahs to the keyer. It should be able to be powered by a lightweight 3.7v rechargeable battery. This is in the early stage, but is showing promise.
I have written some pieces of software to automate the sending of emails to callsigns in adif files. I wrote them to help myself and they work very well. One of them I’m making publicly available since it’s very simple and, although it’s pure command line, I believe most hams would be able to use it.
In this video I explain it and teach how to customize it to your needs:
This software will send one email per callsign in the adif file you choose. It can be used for many things but it fits very well the use case where you record a POTA activation and want to send the link of the video to everyone in the log. It’s specially ideal for POTA because you can download the log per activation from the POTA website =]
The motivation to create this software comes from the fact that I don’t use paper QSL cards anymore, instead I record the QSO and use YouTube as video storage. And since I have it on YouTube already, why not share with the other ham? They love it!
Also, recordings (audio or video) of your radio activities becomes so as they age! See an example. This is the first time tried QRP on the ham bands:
Just from this recording I learned so many things, such as the speaker I had sucked! You can hear much more in the recording than what I could hear in that session heheh
If you want feel free to share this software with other operators, I’d be happy if it helped more people publish real ham radio content on YouTube, like yours.
73
Thank you so much for sharing this, André. I’m sure there are others who record their activations on video and will benefit from your command line tool!
So busy, in fact, I completely overlooked an activation video I filmed two months ago (on Monday, October 23, 2023)!
That said, one of the things I love about making field reports and recording videos is re-living activations a second time. It’s fun to remember the site conditions, the weather, the radio/antenna choices, and all of the folks I might have logged.
I enjoyed stepping back in time a couple of months for this one!
Lake James State Park (K-2739)
That Monday was the first day I surfaced to fit in an activation after fighting a respiratory bug the previous week. I felt much better and tested negative for Covid, so I made my way to Hickory to help my parents with some tasks.
On the way that morning, I stopped by Lake James to play a little POTA with one of my favorite radios in the world: the Elecraft KX1.
On October 23–as I mention in the video–the QRP world had only just learned about the new Elecraft KH1 and I had yet to receive the almost-production unit I ordered as a field tester.
I knew that once I received the KH1, I’d be using it heavily for a few weeks, so I wanted to fit in a little KX1 time in advance!
POTA in Color!
The weather and fall colors at Lake James were absolutely stunning!
New KX1 Tufteln Cover!
Back when I filmed this video, it had only been one week since the W4 SOTA campout where my friend Joshua (N5FY) gave me a few prototype snap-on protective covers for my KX1s.
These covers are very clever because they protect all of the important front-panel components yet remain very low-profile so add little bulk to the radio.
Image: Tufteln.com
Joshua provides two new screws for the front panel (you simply replace out the stock KX1 screw); the cover magnetically snaps onto the higher-profile screws and seats itself securely.
Image: Tufteln.com
I demonstrate my cover in the activation video.
At the time, this was a product Joshua was considering adding to the Tufteln line-up–since then, he’s made it available to order–click here to check it out.
At present, Joshua offers the covers in two colors: black and light brown. Mine are the light brown color.
You’ll notice in the video that Joshua added my callsign to the covers he gave me. I don’t think the production covers are customized with your callsign because Joshua makes these in batches. You would need to check with him about customization–I assume there would be an extra charge and lead time for that because it would require modifying the file and printing a one-off cover.At any rate, I love the covers and have added them to all of my KX1s. Note that I used a Sharpie to write the name of each radio on the cover–this makes it very easy to tell the difference between my KX1 models (they’re named Ingrid, Greta, and Ruby)!
Gear:
Note: All Amazon, CW Morse, ABR, Chelegance, eBay, and Radioddity links are affiliate links that support QRPer.com at no cost to you.
It was early enough in the morning that I decided to spend some time on the 40 meter band to work POTA “locals.” I deployed my Chelegance MC-750 with the 40 meter coil.
I tested the SWR and discovered it was high due to a loose connection on the end of the cable assembly–I fixed that and the SWR came down to 2.5:1. With the MC-750, I could have easily lengthened or shortened the whip to get a perfect match, but instead I took the lazy (& speedy) route and simply used the KX1 ATU to get a 1:1 match.
Even though I’d spent a long time talking about the KX1, KH1, the Tufteln cover, etc. in the video, I actually didn’t have a lot of on-the-air time. (Typical me to talk away my activation time!).
I started calling CQ POTA and the contacts started rolling in.
Within ten minutes, I’d already worked ten contacts.
I worked a couple more, then called QRT. Looking at the time, I had to end this activation earlier than I’d hoped. I needed to hit the road again.
I packed up in short order, but still took a few moments to enjoy the beauty of that lovely autumn morning.
QSO Map
Here’s what this five watt activation looked like when plotted out on a QSO Map:
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 hope you enjoyed the field report and my activation video as much as I enjoyed creating them. I enjoyed reliving this Octeber activation.
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.
Thanks for spending part of your day with me!
Here’s wishing all of the you best of the Holiday Season!
Well before I actually had a KH1 in hand, I noted the dimensions of the radio from the preliminary spec sheet and started exploring the world of compact, watertight cases.
Why a watertight case?
This Pelican 1060 case houses a complete Mountain Topper MTR-3B field kit including a throw line and throw weight.
I like to have a watertight case option for pretty much any QRP radio I take on SOTA (Summits On The Air) activations.
It’s reassuring to know that if I stumble and fall on my pack, the case will prevent me from crushing the radio. In addition, a good case keeps my radio dry if I get caught in heavy rains or (even more likely) slip on a rock and fall in a river/creek. In fact, many of these watertight cases will float with the KH1 inside so if it goes overboard while kayak mobile, it’ll be easy to retrieve. (For the record: I don’t want to test this theory.)
With one exception, all of the cases I explore here cost somewhere between $25-$40. I consider this cheap insurance for a $500-1100 radio.
My requirements
I searched a few manufacturer’s websites and tried to find interior dimensions that would accommodate the KH1 and all protrusions: 1.4”H x 2.4”W x 5.6”L (3.5×6.1x14cm).
I primarily searched two watertight case manufactures: Pelican and Nanuk. I trust products from both of these companies and both offer compact watertight cases. There are more manufacturers out there, but but both of these companies offer quality products. Pelican cases are even made here in the USA. Many Nanuk models are made in Canada, but not their Nano series included here.
In the end, I was searching for two case sizes:
A compact case to only hold the KH1 “Edgewood” package: the KH1 with paddle attached, Cover/Logging Tray, Whip Antenna, and 13′ Counterpoise. There also needed to be enough room for a pair of earphones.
A slightly larger casethat would accommodate the KH1 “Edgewood” package along with earphones, a throw line, throw weight (or rock sack), and a simple random wire antenna.
The idea with the second, slightly larger, case is that it would give me the option to use a wire antenna during an activation and would be fully self-contained (meaning, everything needed for the activation included).
The contenders
I took a total of eight cases to a local park and spread them out on a picnic table for this test. This made the process of comparing the cases quite easy. I actually made a video of this whole process–you’ll find the video further below in this post.
Here are the cases I tested in the order you find them in the video (any Amazon links here are affiliate and support QRPer.com):
Hint: many of these cases are available in multiple colors–prices can vary greatly based on the color. A red case might cost as must as 30% less than a black case, for example. Always check the pricing of color options, but make sure you don’t accidentally select a different size case in the process (this is easy to do).
I would like to share my QRP FT8 kit for Field Operation.
A long time ago, I was seeking the most lightweight QRP kits for FT8 field operation. My goal was to have just one radio, one antenna, one phone, without too many cables, boxes, etc.
Finally, I designed a PCB. It is a Bluetooth DIGI Adapter and can be mounted on the rear panel of my FT-818.
Just plug it to the DATA and ACC jacks. It can be powered by ACC jack’s 13.8V Pin.
It works well with FT8CN, an android FT8 app.
Now, my dream has come true!
My Antenna was a so-called GAWANT, designed by JF1QHZ, I guess it’s a simple Vertical EFHW. I built it with a 1.2 meter rod.
It’s working on 7~28MHz bands, not very efficient, but so small and portable.
For FT8 QRP POTA, field operation, all of these components can be put in a small bag, and deployed in minutes.
I shared my PCB design on Github. If anyone wants to modify it, you are welcome to do so!
Thank you for sharing this, Cao. This is absolutely amazing and an incredibly clever design! I suspect a lot of FT-818/817 enthusiasts will make this same build via your design!
Thank you for reaching out and for sharing your work with the QRP community!
Since nearby Tuttle Educational State Forest is closed on Mondays in the summer, I chose to visit South Mountains State Park (K-2753) instead–it was only a few minutes further afield than Tuttle.
After leaving Table Rock, I picked up a quick lunch in Morganton and drove to the main entrance of South Mountains and set up at the equestrian picnic area.
South Mountains State Park (K-2753)
The weather that day was beautiful and so was the drive.
I decided to deploy my Chelegance MC-750 this time, just to shake things up a bit. If you know me, when I do little roves like this, I typically like to use different radios and/or antennas at each site.
I paired the MC-750 with my Yaesu FT-817ND. My reasoning for picking the ‘817 was because I could use the SO-239 connection on the back of the radio. The new cable assembly/feedline I was using had PL-259s on each end.
Speaking of the new assembly, at the Dayton Hamvention this year, I popped by the ABR Industries booth and Chuck gave me (full disclosure–at no cost to me) a new product to test in the field: a 20 foot PL-259 to PL-259 assembly made with their ABR240-UF cable and with 5 in-line ferrites. What makes this cable unique is that it sports a bright orange flexible webbed jacketing which makes it very easy to see on the ground.
They’ve been informally calling it their “POTA cable.” I immediately knew why this would appeal to POTA ops: one of my constant fears is that someone will unknowingly trip on my feedline while I’m in the middle of an activation. Black coax cable on the ground is very difficult to see (I’ve even tripped on my own lines)–this high visibility jacketing makes cable very conspicuous. Just check out the photos above. Continue reading Pairing the Yaesu FT-817ND and Chelegance MC-750 at South Mountains State Park→
Many of you know that I’m a big fan of cable assemblies from ABR Industries. I’ve been a customer of theirs for well over a decade and I’ve never had one of their cables fail me.
I’ve hinted to ABR in the past that it would be great to have a sponsorship or affiliate relationship with them.
ABR came through this week by starting an affiliate program with QRPer.com and will give our community a 10% discount on any items purchased on the ABR website via our link and by using the discount code: ABR10QRPER
I made a few suggestions of cable assembly types and standard lengths based on the ones I use the most and I feel others would find useful in the field. They created a page specifically for these options and the selection will likely grow with time:
“it’s important to use the 10% discount code under ABR10QRPER. It’s in the checkout section under coupon. The reason is if a customer buys other items they will enjoy the discount beyond these focused products.”
So there you go!
If you need something other than what is listed in this selection, ABR will help you find what you want on their website–just make sure you enter the coupon code for the discount!
Many thanks to ABR for setting up this affiliate relationship and discount code. You may note that I only have affiliate relationships with companies I trust and patronize myself. Very proud to have ABR on board with QRPer.com!
I thought it was a brilliant idea. Monty’s dad, John, served in the US Air Force in the 1960s and has always been a fan of aviation. Despite this, he had never been to the USAF museum.
Monty and I have been friends since being roommates back in our undergraduate years; he and his parents are like family to me. (You might remember Monty from a couple of SOTA/POTA activations in the past.)
When Monty asked, “Hey, would you like to join us–?” It took me all of one microsecond to say, “Heck yeah!”
Off we go…
Monty, John, and I hopped in the car and headed to Dayton (from Charlotte, NC) Sunday morning, July 16, 2023.
It was a beautiful day for a 7+ hour road trip, too. Of course, I made sure we timed the trip so that we could stop at Tamarack in Beckley, WV for lunch.
We arrived at our little AirBnB vacation rental late that afternoon.
The house was literally a stone’s throw from the USAF museum. If we would have been any closer, we would have been on the museum driveway.
USAF Museum
Monday morning (July 17) we ate breakfast, then made our way across the road to the museum shortly after they opened the doors at 9:00.
I’ve been to the USAF museum at least fifteen times and it never gets old.
It’s the largest military aviation museum in the world and it’s brilliantly curated. They’re always shuffling around exhibits so that even if you visit annually, you’ll always find something new and fascinating.
Many thanks to Barry (KU3X) for sharing the following review originally posted on his website:
Product Review: RigExpert AA-650 Zoom
by Barry G. Kery, KU3X
If you are building a ham radio station, whether it be a contest station, a station for working DX or just daily rag chewing, this may be the tool you need to help you maximize your signal.
The AA-650 Zoom is a very user friendly antenna analyzer. It is super easy to navigate through the menu to choose what task you want the analyzer to perform.
Let’s start with frequency range. This unit will cover from 100 kHz up to 650 MHz. To get accurate readings, you must enter three factors. You must enter, “Frequency, span and sampling points. “ Here is one of many areas where the AA-650 Zoom shines and that is, “Sampling Points.”
When you sweep a frequency range, whether it’s just the 20 meter band or maybe sweep from 7000 kHz to 30000 kHz, sampling points have a direct impact on the results.
Antenna analyzers do not take a reading one Hertz at a time. They take a reading at numerous points within your sweep range. You can select how many sampling points you want to use. The 650 Zoom gives you 5 options. They are 20, 50, 100, 250 and 500 sampling points.
Let’s say you want to sweep from 7000 kHz to 30000 kHz, like the usable frequency range of a 40 meter off center fed antenna. If you choose to use 50 sampling points, the 650 Zoom will take a reading at every 460 kHz in that range. Once the sweep is finished, the analyzer takes an average and fills in the display with an SWR curve. So it kind of guesses what’s between each point.
Now take that same frequency range but sweep it with 500 sampling points. The 650 Zoom now takes a reading at every 46 kHz. Remember one thing: the more sampling points you use, the slower the sweep but the higher the accuracy. For single band use, I like to use 100 sampling points.
Most of the time, that’s all you need. But let’s say the antenna you are testing has some quirk at a given frequency. If your sampling points are set too low, your sampling points may not be close enough to detect the problem. So now the analyzer will not know there’s an issue and fills in the display with an average reading.
There are two ways to setup the analyzer for a frequency and range. To the left shows where you can manually enter the center frequency and the span of the sweep. Press the, “Frequency key” on the keypad to access this feature. Within that display, to the far left you will see meter bands. If you press the, “F key” on the keypad, a band will be highlighted. Use the up / down arrow keys on the keypad to select your band of choice. When you let up on the, “F key” the analyzer will program that band with a predetermined span.
The picture on the right shows yet another super easy way to set up the analyzer. To access this screen, press and hold the, “F key” and then press the zero key on the keypad. The rest is easy. Pick a number that corresponds to the band you want to check.
Top picture shows an SWR curve of my 40 meter beam. This reading was taken from my shack. Take note of the bottom of the display. The analyzer lets you know what the minimum SWR is at a given frequency. On the top of graph, the SWR is shown in relation to the pointer.
The top right picture shows the SWR of my 20 meter beam at a given frequency. You may find this feature useful for adjusting a manually operated transmatch or adjusting the tuned inputs of your home brew amplifier. On the bottom of the display, it shows return loss at 14150 kHz.
When you sweep a frequency, you can save the SWR plot in any one of the 99 non-volatile memory slots so you can retrieve them at a later date.
If you want to check more than one frequency at a time, like on a tri band Yagi or an off center fed antenna, the AA-650 lets you pick up to 5 different frequencies to check at one time.
Shown below are return loss figures for a low power 4 to 1 Guanella Current Balun. The balun was designed to be used from 80 to 10 meters. The sweep is from 2 MHz to 30 MHz.
Let’s talk OSL Calibration…
Using Open, Short, Load calibration is a way to cancel out your transmission line so you can take a reading of your antenna like you are attaching the antenna analyzer to the feed point of the antenna. Let’s take a 100 foot length of RG-8X as our coax used for testing antennas. Hook the coax to the 650 Zoom and run OSL Calibration. Once you do that, it’s like the coax is transparent. Continue reading Barry reviews the RigExpert AA-650 Zoom→
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