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The Tech Prepper • NomadNet Node
Last Updated • 2026-07-25 1320Z

:: TTP Expedition Journal & Field Notes - Part 3 ::
A 36-Hour Communications Exercise in Arizona's Tonto National Forest

1155 --- Rock Crawling

My client was a good sport.

Seated more than a foot below me in the passenger seat, he held on as the Jeep leaned its way through a rocky incline, occasionally tilting what felt like thirty degrees.

This wasn't exactly the smoothest ride in Arizona.

With the thermometer now reading well over 110°F, we slowly worked our way through the rocks, carefully avoiding a fallen saguaro while adding a little more "Arizona pinstripe" to the sides of the Jeep.

A few minutes later, the trail leveled out.

We had arrived at base camp.

1225 --- Base Camp

With New River Mesa filling the windshield and nestled between Black Mesa and Ruin Ridge, I positioned the Jeep north-south to give us the best possible protection from the afternoon sun.

Time for the shelter.

I grabbed the balled-up tarp from behind the driver's seat and tossed it over the roof to my client.

Three minutes later, the same tarp shelter was standing once again.

Next up, solar.

I pulled a well-worn 20-watt PowerFilm solar panel from my ruck and clipped it to the east side of the shelter, where it doubled as a small sunshade.

It was time to top off the Anker 737 using the Devos solar voltage regulator.

FIELD NOTE
The Devos Solar Voltage Regulator is one of the more unique pieces of gear in my power kit. Unlike a traditional solar charge controller, it accepts Anderson Powerpole input directly from the solar panel and provides USB-C PD (Power Delivery) output.

This allows me to charge 5V, 9V, 12V, 15V, and 20V devices from a single regulator. In the field, that means everything from my flip phone and Garmin watch to amateur radio equipment, the Panasonic FZ-M1, and—most importantly—the Anker 737 battery pack.

Out came the folding table, two chairs...

...and a reward.

Yes, it was only 1230.

But after spending the morning in 110-degree heat, we had earned an ice-cold beer while there was still ice left in the cooler.

A non-alcoholic IPA for me.

A fully loaded IPA for my client.

1300 --- An Expedient Antenna

After a bit of hydration, it was time to get back to work.

Surrounded by higher terrain on all four sides and nestled within a small canyon, it was the perfect opportunity to demonstrate some mid-range HF communications.

"Are you up for some HF?" I asked.

"Yes, sir!"

We grabbed our rucks and pulled our matching End-Fed Half-Wave (EFHW) wire antennas from a pair of small coyote brown pouches.

Just like in my videos, I wanted to demonstrate how quickly a simple wire antenna could be deployed only five feet off the ground.

My client clipped the matching unit to a nearby Palo Verde tree and walked out all 65 feet of wire.

"There's nothing to tie this end to," he said.

"Can I borrow one of your trekking poles?" I said.

"Of course."

I grabbed the trekking pole, my camp hatchet, some cordage, and a tent stake.

"Nothing to it," I said.

"We'll clip the wire to the hand loop, guy out the trekking pole, and call it good."

A few minutes later, we walked back to the Palo Verde, connected a 15-foot length of RG-316 coax to the antenna, and routed the feed line back to our improvised shelter.

FIELD NOTE
The military discovered a clever antenna deployment technique that takes advantage of a radio propagation mode known as Near Vertical Incident Skywave (NVIS).

By placing a horizontal antenna low to the ground (between about 1/10 and 1/4 wavelength above the ground) the signal shoots nearly straight up, reflects off the ionosphere, and comes back down, providing coverage out to roughly 300 miles.

In practice, I often deploy my antenna even lower—around five feet above the ground—and still achieve excellent results.

On the amateur bands, NVIS generally works between the 80m and 30m, making it ideal for regional communications.

1305 --- Something's Not Right

My client grabbed his Lab599 TX-500MP and FZ-M1 while I opened the roll-top cover on my ruck and fished out my RigExpert 230 antenna analyzer.

The analyzer wasn't strictly necessary, but I wanted to demonstrate how to verify an HF antenna in the field before transmitting. We planned to operate on the 40m, 20m, 15m, and 10m bands, and this was a good opportunity to show him one more piece of field equipment.

Shoot!

I didn't have my PL-259 to BNC adapter.

This is what happens when I borrow gear from my field kit for a "quick" project at home.

"What do you need?" he asked.

"Do you happen to have a PL-259 to BNC adapter?"

"Let me check."

A few minutes later, he returned and handed me the adapter.

I immediately made a note in my field notebook.

ITEMS TO RESTOCK

2× PL-259 to BNC adapters

After threading the adapter onto the analyzer, he connected the RG-316 coax.

He pressed the red square button to wake the analyzer.

The e-ink display came to life with four menu options.

Without any prompting, he pressed the + button and started a multi-band sweep.

Hrm.

He came prepared.

Better yet, he already knew how to use the analyzer.

Very nice.

I was impressed.

Then the screen changed.

No resonance found. Please connect an antenna, check cable, then click > to rescan.

Oh crap.


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