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Testing New POTA Gear: High-Band QMX, Explorer Carbon Fiber Mast, Pressure Paddle, and a Packed Nemo Resolve 25L

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Please note that this POTA (Parks On The Air) activation took place on September 19, 2024—eight days before Hurricane Helene devastated western North Carolina. This is one of a few field reports and activation videos I’ll be sharing that took place before Helene’s arrival.

As I mentioned in my last field report, I haven’t been back to the Vance State Historic Site since the storm, as it’s been closed. Located in the Reems Creek valley, the site likely experienced extensive flooding. I hope this park can recover and reopen soon.

I hope you enjoy this field report and activation video. I’ve thoroughly enjoyed reliving it while preparing this for you.

Thank you!
Thomas (K4SWL)

On Thursday, September 19, 2024, I made time for a POTA activation at the Zebulon Vance Birthplace (US-6856) and brought along a few new items to make it even more interesting.

New Pack

I packed my new gear along with extra equipment to fill out my new Nemo Resolve 25L backpack (check it out in gear links below). I wanted to see how well it could handle a full load and how comfortable it would be to carry.

Turns out, it’s very comfortable, and I could easily fit more in this pack than I’d likely ever need. It’s a keeper.

New QMX

First, I brought along a new QRP Labs QMX transceiver. If you’ve been a long-time reader, you’ll know I’ve had a QMX for about a year and think it’s a brilliant little radio. This one, however, is the “high band” version, meaning it covers 20-10 meters. My other QMX is the “low band” version, covering 80-20 meters.

As soon as the high band QMX was announced by QRP Labs, I grabbed one. I purchased an assembled version, knowing it could be a year (or much longer) before I’d have time to actually build one.

When I received this new QMX—I’m not sure, months ago?—I tucked it away in a drawer while reorganizing my shack, then promptly forgot about it (in my defense, I had a crazy year). I eventually rediscovered it, and here we are!

I’d been looking forward to taking it to the field.

New Carbon Fiber Mast

At Hamvention this year (2024), I ran into my good friend Mike Roberge (KE8PTX). He told me he was super excited about a new product that had been showcased—not a flagship radio or similar, but the Explorer POTA20Carbon Fiber Mast. 

Mike was one of the very few people who actually purchased one at Hamvention to take home. I believe Gigaparts only had two or three on hand—mainly for demo—so everyone else had to place an order and wait 6-8 weeks for the first shipment.

Meanwhile, Mike, being the clever fellow he is, designed a 3D-printed ground spike holder that fits a tent stake. This allows the user to unscrew the base cap of the Explorer mast, insert Mike’s ground spike, and support the mast without needing guy wires, etc.

If this sounds familiar, it’s because Mike made a video about how easy it is to deploy the Explorer mast with his ground spike.

I purchased my Explorer pole via Gigapart’s online store during or right after Hamvention. I didn’t receive my mast until sometime in August. This activation was the first time I tried it out in the field.

I deployed my 20M EFHW (built on a TennTennas transformer) by attaching one end to the tip of the Explorer pole, then sloping it down so the feedpoint was close to the edge of the picnic shelter at Vance.

K3ES’s Grippy Pressure Paddle

Another item I rediscovered in September was a VK3IL pressure paddle my good friend Brian (K3ES) gave me at Four Days in May during Hamvention. His version is a standard VK3IL pressure paddle, but with some padded material under the heat shrink, making it easier for big hands to grip.

Brian’s paddle paired nicely with the QMX!

With everything set up, it was time to hit the air.

Gear:

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Radio

Antenna, Support & Cable Assembly

Packs & Cases

Speakers & Headphones

Logging Supplies

Key and Key Accessories

Battery

Camera/Audio Gear

On The Air

The QMX, of course, performed well during this activation.

I did encounter some difficulties at the beginning when the QMX produced significant audio pops in the CW sidetone audio whenever I keyed the radio. I spent a few minutes troubleshooting and even changed speakers, thinking it might have been an issue with the Soundcore Mini.

It turned out to be related to toggling the AGC function. I eventually managed to resolve the audio pops and used the Soundcore Mini. I’m not sure I could replicate the process exactly, but I got it working. (If you’ve had a similar experience, I’d love your input.)

Otherwise, the activation went very smoothly.

I worked my first ten stations in eight minutes—woot!

Activity slowed down a bit after the first ten, but I still managed to work 17 stations in under half an hour.

Many thanks to everyone who hunted me!

QSO Map

Here’s what this five-watt activation looked like when plotted out on a QSO Map:

Screenshot

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.

Note that Patreon supporters can watch and even download this video 100% ad-free through Vimeo on my Patreon page:

Click here to view on YouTube.

Explorer Carbon Fiber Mast

I love that the Explorer mast fits easily in my Nemo backpack. I see myself using it a lot for SOTA and POTA activations where suspending an antenna in a tree isn’t possible.

It’s super lightweight and compact, and Mike’s ingenious tent stake spike mod makes this mast so easy to deploy.

I also enjoyed using Brian’s pressure paddle during this activation—thank you, OM! It’s comfortable to grip and use.

This high-band QMX will make a brilliant SOTA transceiver. I need to take advantage of these high bands while the ionosphere supports them this solar cycle!

Thank you

Thank you for joining me during this activation!
I hope you enjoyed the field report and my activation video as much as I enjoyed creating them!

Also, thank you for all of your recent support and kind messages following Hurricane Helene.

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 not a requirement, as my content will always be free, I really appreciate the support.

Thanks for spending part of your day with me!

Cheers & 72,
Thomas (K4SWL)