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 + [QCX-SSB](https://github.com/threeme3/QCX-SSB)  This is a simple and experimental modification that transforms your QCX into a (class-E driven) SSB transceiver. 
 + [uBITx](https://www.hfsignals.com/index.php/ubitx/) An understandable general coverage HF SSB/CW transceiver kit 
 + [M17-Project/OpenHT-hw](https://github.com/M17-Project/OpenHT-hw) Hardware part of the OpenHT - an open-source, SDR handheld transceiver.
++ [bmo/tuning-knob-pcboard](https://github.com/bmo/tuning-knob-pcboard) Open Source Tuning knob that works with PowerSDR and SmartSDR and Remote Ham Radio (RHR). Uses STM32 hardware.