Trail Running SOTA with Yaesu FT-817

I like running, hiking, summits, and ham radio. Well, lots of other things, too. But this is about those four things.  Since I started doing SOTA, I’ve wanted to try to put together an HF summit activation kit for use on trail runs.  I’ve done a a few SOTA activations while trail running, but it had always been with just a hand-held radio—usually my tiny Yaesu VX-2R with a 12-inch ultra-flexible whip antenna, or an MFJ “Long Ranger” telescoping antenna.

On most of my activations, I’ve used a SOTABeams “Band Hopper” with my FT-817.  It’s a resonant dipole for 40 and 20 meters, with a nice convenient bag, stakes, guy lines and 1:1 balun.  It’s a very nice antenna, easy to set up. But it’s a bit on the heavy side compared to an end-fed half-wave (EFHW) antenna. And not quite as easy to throw into a tree.

I built myself a SOTA Tuner from QRP Kits, and cut a length of wire for 40m, with a link in the middle in case I want to do only 20m.  I used wire and a winder from SOTABeams. This is excellent lightweight wire for building your own antennas.

After getting familiar with setup of this antenna on a camping trip, I decided I wanted to see if I could get this antenna, my FT-817, microphone, and other support accessories into my running pack/vest—along with all of the necessities for a run.

As it turns out, it’s possible. Just barely! And while feasible in the summer, may not be feasible in colder seasons, due to the need to pack cold-weather items.

All gear for a trip, except shoes

As you can see, there are quite a few items. Most of the items in the picture need to go in the pack, including:

  • Water
  • Small first aid kit
  • Chapstick
  • Snacks
  • Antenna wire
  • Antenna tuner
  • FT-817 (with WindCamp internal Li-ion battery)
  • VX-2R
  • Bungies/twist ties
  • Hand mic (with flat Cat-5 cable as lighter substitute for stock cable)
  • Cell phone (not pictured)

The 5m “squid pole” and my hydration water mix are hand-carried.

All packed up! (back view)

Packed up (front view)

As you can see, it all fits! Mostly thanks to a very nicely designed pack! I don’t think they make the same model anymore, but there’s a very similar one on Nathan’s site.  It’s a very small pack!  So, with the water bladder in there, the FT-817 just barely fits.  This is actually a really good thing—a snug fit keeps the radio from moving around a lot so it’s naturally protected from much shock as I run the trails.

I haven’t had a chance to weigh the whole package yet, but I’m fairly certain it comes in at around 3.5kg / 7.8lbs.  I can run 12-18mi (20-30km) with this setup, depending on elevation, though my typical runs with it are around 6-10mi (10-16km).

I’m currently working on replacing the hand mic with a lightweight headset, roughly following Alex PY1AHD‘s idea. This will shave a bit of weight and make operation a bit easier.

Down the road, of course, I plan on getting proficient with morse/CW, and getting a lightweight CW-only rig.  This will cut size and weight considerably, extending my range and comfort.

  • Tucson Runners

    Very cool Rex! Hope to work you when you run to a summit sometime soon – 73 de KR7RK

    • Rex Vokey

      Yeah! The next few will be hiking/backpacking activations, but then I’ll be back to running!