Category: Hacks

Come Join the QRP-Tech Group!

I recently joined a group at groups.io called “qrp-tech”. It started in 2005 on Yahoo Groups, and eventually ended up over at groups.io. I was thrilled to find such a treasure trove of information and a thriving QRP community. Imagine my sorrow when just days later the group admin decided he was ready to move …

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The W7RLF BITX40: Finished at last!

Last year I thought the BITX40 was “done”. It successfully worked on 80, 40, 30, and 20m. It was truly multi-band! The trick to doing that was to make the Band Pass and Low Pass filters pluggable using QRP Labs filters. One only needed to open the radio, change the filters, and retune the VFO. …

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KI7MNW’s Homebrew QRP Transceiver

Cameron Tribe, KI7MNW recently posted his homebrew QRP transceiver on the Amateur QRP Radio group on Facebook. It’s completely scratch built and borrows design elements from several sources including the BITX40. Follow all the way to the bottom for a picture gallery, schematics, and source articles. Tonight I finished my homebrew 40m QRP transceiver. I’ve …

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Replacing Relays in the BITX Radios

In this post, we’re going to show you how you can replace the relays in a BITX40 radio. You can use the same method to replace the relays in your uBITX too. Use caution and common sense when doing this. Here’s a link to the relays I used: If you’re using the Axiom relays for …

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HF Antenna 80-10m, no tuner needed.

One of the amazing things about Amateur Radio is that you can turn the hobby into whatever you want it to be. You canĀ  spend thousands of dollars on all the latest gear with a 130 foot tower with giant beams atop it. OR…. you can spend as little as possible and have at least …

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