EDN

SSB Transceiver Known as Five by Twenty

The project consists of 5 vacuum tubes without ICs or transistors for making a true SSB QRP transceiver for 20m Ham band. The project consists of 5 vacuum tubes without ICs or transistors for making a ...
note

アマチュア無線の楽しみ方②

いったん完成品のリグで、機械的なところの心配がない状態でモールスの通信テクニックを磨いてから、自作機にチャレンジするというのが良いと思います。 QRPLabsのCW専用トランシーバーを、完成品で買うのが良いかもしれません。
GitHub

StefanKDS/FT8_Transceiver_QRP

My QRP FT8 Transceiver is basded on a ATS20+ Receiver and on the FT8 project on the website https://www.elektronik-labor.de/HF/FT8QRP.html. The new Firmware of the ...
Hackaday

Wilderness Radio Build

[AA7EE] is no stranger to building radios. His latest is a from-scratch build of a 20 meter QRP transceiver based on the popular SST design. Although the SST has been available as a kit, [AA7EE] ...