Back in 1996, QRPp (vol. 4 no. 1) published the Forty-9er. This is a forty meter radio designed to run from a 9V battery, hence the name. The circuit was designed by N6KR (of Elecraft fame!), and originally kitted and sold by the NorCal QRP Club. Since then the design has been stolen by Chinese manufacturers who sell kits for cheap.
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| Forty-9er, as built by AA6XA |
This radio is about as simple as you can get and still have a usable transceiver. I broke the Chinese eBay version I had down into six modules. Each has a testing and explanation video on the ham_bitious YouTube channel. The modules are:
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| The radio on a SOTA/POTA activation. |
I think each of these modules can be built and tested with minimal test gear. I showed some tests that I can do since I acquired a 'scope, but they're certainly not needed to get a working radio.
Hopefully you find the video series informative, and are inspired to go build your own radios!
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