On Monday, September 2, 2024, my good friend Vlado (N3CZ) and I spent Labor Day morning playing POTA.

Our first activation was at Lake James State Park, using the new CFT1 QRP transceiver. It was a lot of fun–you can read the field report and watch the video by clicking here.

For the second activation, I wanted to take Vlado to a site I’ve activated numerous times—one of my favorites—that he had yet to visit:

Table Rock State Fish Hatchery (US-8012)

We arrived on-site around 11:00 AM and, no surprise, had the place to ourselves. Honestly, I was hoping we’d see the three dogs that often pop by for a visit, but I believe they were on vacation with everyone else!

We both figured 20 meters would be our bread-and-butter band for this activation. More importantly, our transceiver was a 20-meter monoband (more on that below), so I deployed my new 20-meter end-fed half-wave antenna.

This particular EFHW is built on a  transformer by Walter (NE4TN) at TennTennas.

TennTennas 49:1 QRP Transformer

I may have mentioned before that Walter gave me this little 49:1 transformer at Hamvention this year when I met him in person. Walter is one of my top hunters in POTA, and I can often count on hearing his call when I’m on 40 meters.

Walter handed me this little transformer as a thank you, with no obligation to promote it—in fact, he didn’t even tell me where they could be purchased.

But I’m a sucker for home-grown mom-and-pop ham radio businesses, so of course, I’m going to plug it! He sells these on eBay (partnership link) for $39 each as a small side business. Not a bad price for a solid little 49:1!

As I mentioned, I trimmed this one for 20 meters, but I’ll likely make it a linked antenna with 30 and/or 40 meters as well someday.

Vlado’s Homebrew Transceiver

I was also excited that Vlado brought along his homebrew 20-meter QRP transceiver.

I had seen this radio in his shack during various stages of development, but I had never had an opportunity to use it in the field.

I’m not sure if Vlado had used it for a POTA activation yet, in fact.

His little transceiver is super simple but sports proper filtering, an OLED display, and, despite the large battery he connected to it, has modest power requirements.

He built it into an old Kenwood VHF radio chassis he found at a hamfest. I’ve been with Vlado before when he’s hunted for chassis for his various homebrew projects. The OM is always building or repairing something in his shack.

We were really looking forward to putting this little transceiver on the air!

Gear

Note: All Amazon, CW Morse, ABR, Chelegance, eBay, and Radioddity links are affiliate links that support QRPer.com at no cost to you.

• Transceiver:
  • N3CZ’s homebrew transceiver
• Key:
  • Putikeeg Mini CW Key on a steel block
• Antenna system:
  • TennTennas 49:1 Transformer trimmed as a 20M EFHW
  • ABR Industries 25’ RG-316 cable assembly with three in-line ferrites (Use Coupon Code ABR10QRPER for 10% Discount!)
  • Weaver arborist throw line/weight and Folding Arborist Throw Line Cube
• Power source:
  • Bioenno 12 Ah LiFePo Battery (total overkill for this radio!)
• Other accessories:
  • Tom Bihn Large Travel Tray
  • GraphGear 0.9mm 1000 Automatic Drafting Pencil
  • Rite In The Rain Top Spiral Notebook
  • Nemo Chipper Foam Seat
  • Thermacell Mosquito Backpacker Repeller
    and fuel canister
• Camera:
  • DJI OSMO 4 action camera with Joby Telepod Sport Tripod

On The Air

As with our first activation that day, we decided to take turns with one radio instead of setting up two stations. Vlado was the first op to start calling CQ POTA! Continue reading QRP POTA: Pairing N3CZ’s Homebrew Transceiver with the TennTennas 49:1 EFHW! →