DStar and YSF/DMR Reflectors are Live

XLX367 reflector is live! Update: February 2019: All three modes DStar, YSF, and DMR are now crosslinked! DStar REF367A (also XRF367A and DCS367A) is up an running. This is a new multi-protocol DStar Digital Voice reflector, running in the cloud. It is available for public use and is tied primarily with JerryNet communications. Also, a Yaesu Fusion YSF room 68798 is running at the same server, and is bridged to DMR Talkgroup 3128459 DMR (here’s how to connect to XLX DMR). Fusion users can talk in this YSF reflector to other Fusion users, and it is cross-linked to DMR as well for wider reach. I am currently working within the Brandmeister support process to tie the XLX reflector to a DMR master, but until then, the reflector works for all 3 ham major digital voice modes. Please visit the reflector on one of your digital voice radios and say hi!


Build Your Own DMR/DStar/Fusion Hotspot for CHEAP

In an effort to get more people on digital ham radio easily, I posted a video about how to put together your own multi-mode digital voice hotspot device very inexpensively, and with little effort. I have put together several of these and the work pretty well. Kind of like an oil change, almost anyone can do it.

https://youtu.be/LspgnvDPJvc

I admit, I used to have a purist mindset about ham radio. All these Internet-dependent modes such as Echolink, IRLP, and even analog repeater inter-linking over the Internet had me thinking “but what happens when the grid goes down?” I’ve experienced some pretty bad fails as a systems & software engineer, and also as a site reliability person constantly on-call, so I’ve come to expect that even on the best of days, parts of the Internet like to fail spontaneously and without provocation.


Projects 2018

This past year was an eventful ham radio one. As I begin to look ahead to goals and daydreams of 2019, it’s always good to not expect the past to be the norm, but to take a moment and appreciate all the stuff that’s happened good and bad.

Thinking back, it’s amazing when I consider HF newbie AD6DM 2017 vs. AD6DM 2018. Here are some of the things I experienced in 2018:


The Gamification of Ham Radio

Kids playing videogamesI think contest organizations and the ARRL understand one aspect of fostering activity in the hobby. The logbook awards, contests, and sprints have their roots in achievement, competition, and accomplishment. Stanford gaming theorist Jane McGonigal recently spoke at a Security Conference I attended where she remarked on the incredible amount of time poured into online gaming. More than the combined manpower of the largest companies in the world, games contribute literal trillions of man-hours (billions a week) to seemingly “useless obstacles”. Why? Because games bring out a full-brain engagement like few other daily activities. The same concepts are readily (albeit unintentionally) applied to ham radio. Even contests that aren’t scheduled, like SOTA, POTA, VUCC, Worked All States (WAS) have their value in ham radio. What they do is hook us in a way that stimulates the creative and driven parts of us, even if the result is just a simple list of non-personal contacts at the end of the day. I’ve heard hams say “I only ragchew”, or “I don’t contest” or “Contests are stupid and they cheapen the spirit of ham radio.” I just nod and smile and think: Whatever, elitist. You’re too cool for us. I’ve seen the same elitism when I was heavy into photography. Gearmongers who just wanted to be better than everyone else with their gear and knowledge without actually ever contributing anything of value to the endeavor. If your wallet or your Google/academic knowledge is your boasting point, that’s not much of a foundation to stand on, is it? I remember when I first started out in EMCOMM-based HF ham radio; I thought that contests were a waste of time. (Honestly, because I didn’t know how to be good at contests, nor did I have the capability to join, so basically sour grapes.) But I’ve come to see their value. How else will I continue to daily try and learn at ham radio? Through tedious and rote drills? Through repacking my communications go-bag for the 50th time? Through surfing the internet for my wish list and straining the finances? Some people find a great deal of satisfaction in individual experimentation, learning, preparation. That is admirable, inspirational even. Individual exploration is a very important aspect of ham radio. But that is not a license to poo-poo on others’ pursuit of collective fun through play. I have to credit CW Academy for essentially forcing me to get into its contests as part of the classes. By understanding the workings of contest exchanges, it made it that much more feasible to participate, and therefore understand the true fun that can be had in trying them out. Then there’s the side benefit of actually practicing various modes and sharpening radio operation skills. As my CWA advisor said, “Even if you’re not interested in contesting, do it and you’ll definitely get better at ragchewing.” Ham radio can only be engaging, inclusive, and practiced. Without these traits, it’s not much more than a gear fetish on its way to the trash heap. An amateur radio operator needs to be on the air. Ham radio is in the doing, not in the being or having. The keyword is: Operator. In the end, we want many people to become engaged in ham radio because it means we get to talk to more people! So whether it’s slowly and consistently adding those contacts to the logbook in pursuit of an award, or if it’s jumping into the fray with the big stations to hopefully eke out a few points in a contest amidst thousands of watts of competition, I say: Do it. It will awaken parts of your brain like little else does. Or, you can sit in an armchair and judge everyone. Either way, the hobby grows with contests. Not just because of contests, but who doesn’t want a good game while doing what is fun?


Test Ed Fong Roll-up J-Pole

One of the few things I actually took home from Pacificon 2018 in San Ramon was an Ed Fong “DBJ-2” Dual-band Roll-up J-Pole for 2m/440. A vendor was asking me if I needed a cool base-station 2m antenna (DBJ-1), and I said I already had one set up. I recognized the seller’s nametag and said, “But I do know your name… Do you happen to have any of your famous Roll-up J-pole antennas?” He had only a couple more. I knew about this antenna from SOTA YouTubers KG6HQD Jerry and W6RIP Kevin, and wanted to try one since seeing Jerry throw one over a tree and blanket the whole Los Angeles basin with his VHF reach. In this video below, I demo hitting a repeater 45 miles away on 0.05w (50 milliwatts). No one gave me a signal report on that attempt, but I was able to get someone to confirm readability on another repeater 20 miles away on 0.05w, and “much clearer” on 1w. https://youtu.be/sW40nKJk1qo So when you hear people with stock antennas on Baofengs complaining they cannot hit repeaters with their “HP” 8 watts, think about the antenna and its location, not on getting an amp or higher power mobile rig.


CW and FT8 and PSK, oh my!

In the past month, I’ve finally unblocked my antenna issues and made great strides in the digital realm of ham radio. Using the PreciseRF HG-1 magnetic loop antenna along with my RigExpert AA-600 to get the lowest possible SWR, I have found that I can get out to virtually all over the country simply from putting the antenna on the street. The loop only supports max 45W PEP, so it is definitely a low-power antenna. But I can only imagine how it would function if I were in a flat field or on a peak.


Sent first SSTV image

Using SSTV for iOS on my phone and a BTECH APRS-K1 Audio Interface Cable (albeit connected to a Kenwood TH-D74A), I just sent my first SSTV image on 145.510 MHz FM simplex. I don’t think anyone heard, but it was a proof of concept exercise. I recorded the transmission on a separate handheld, using a small voice recorder. Despite this lossy recording method, I was able to reconstruct the image pretty well using the same SSTV app. Here is the recording, give it a try with your decoder: Encoded with Scottie 1, try decoding this SSTV transmission with your own SSTV app. (here’s a media file download link) The implications of this mode are fascinating. I can imagine being in the field and needing to send a photo in a grid-down/remote situation. With just your phone (which is a camera), a cable, and a handheld, you can easily send out images of the scene. It’s basically color fax for hams! Moreover, it’s a quick method for exchanging digital QSL cards. :) This topic was covered in an EMCOMM class I took, but I did not realize the practicality of this. I thought it was “yet another digital mode” that required carrying around luxuries like a laptop computer, TNC, laptop power, and fancy antennas. The iPhone + handheld method brought this down to earth for me, and helped me realize it’s a very portable way of communicating. Here’s a list of SSTV frequencies I found: http://www.qsl.net/kb4yz/net.txt


First CW QSO Confirmed

Today I received my first reply QSL card. And for a CW QSO, no less!  

AB6ET QSL Card
AB6ET QSL Card sent in response to the one I sent him. Thanks, Norm!
AB6ET QSL Card - Mar 18 2018 - 8-05 PM - p2
Back of AB6ET QSL Card

On March 7, 2018, during my lunch break I set up my mobile 40m hamstick in the office parking lot and surfed around the CW frequencies of 40m (i.e. 7.000 to 7.125 MHz). It was mostly me calling CQ and with no replies, but toward the end of the lunch hour, I heard someone coming in pretty loud, and slow enough that I could (mostly) make out the characters. By the second callsign send, I could visualize: AB6ET. I hoped I was getting it right. When AB6ET finished, I sent out, “AB6ET DE AD6DM AD6DM K”. Expecting to hear the CQ call again (which is normally the case, nearly no one hears me), I prepared to shut down and go back to work. But then AB6ET was sending my callsign! WOOHOO, I had just made a CW contact! The QSO was horrible, and by no fault of AB6ET. I sent “SRY MY CW IS BAD, NEW TO CW” (or at least I tried to send that), as well as totally mucking up his RST report and other words. I felt so unprepared. I didn’t have a pencil or paper, and when I thought I could rely on the CW translator of the radio, it totally failed me due to the background noise. I copied perhaps 25% of what he sent, but I did make out NORM as the name, and bits and pieces. It was an embarrassing conversation due to my limitations. Later that evening I found Norm’s email on QRZ.com, and asked him if I got the callsign right. The next day he replied that yes, we indeed talked on CW, and he encouraged me to keep it up and gave a lot of great tips on how to get better at CW. I felt very motivated to keep at the CW practice after that email. This contact was 300+ miles away on 40m, transmitting roughly 10 watts into a mobile 8ft vertical hamstick with about 2.2:1 SWR. Not bad for a lunch break, I’d say!


Choosing the Next Rig

In my quest to find the next portable rig (I already decided), I made a comparison sheet with stats about the various rigs I was considering. Here is my portable rig matrix (including handhelds). Hopefully this list could be of help to others.



Bear in mind, I had specific goals in this rig evaluation:


Wiring a CW Paddle

Many HF transceivers use a stereo jack for the internal electronic keyer. Some have a 1/4" jack, others have a 3.5mm jack. This is a note on how most of these are wired to a CW paddle. On a TRS cable (tip ring sleeve 3.5mm)

  • Red: tip (left, dit)
  • White: ring (right, dah)
  • Yellow: sleeve (common ground) (this wire could also be black)

If you’re right-handed, use the left paddle for the dit, which would go to the tip of the plug which would be the red connection. The white connection is the dah (right paddle) which goes to “ring” on the plug, adjacent to the tip. The common ground would go on the base “sleeve” connection on the plug, the yellow wire.