Quanscheng UV-K5(8)
- https://qrp.hu/igy-alakitsd-valoban-mindentudova-a-q-k5-od/
- https://www.youtube.com/watch?v=jxwBlp8HfKU
- http://www.hamskey.com/
- http://www.hamskey.com/2024/03/introduction-to-uv-k5-hf-fullband.html#more
- https://hackaday.com/?p=674847
- https://github.com/mentalDetector/Quansheng_UV-K5_PCB_R51-V1.4_PCB_Reversing_Rev._0.9?tab=readme-ov-file
Yaesu FT-90R
- https://www.rigpix.com/yaesu/ft90r.htm
- https://www.rigpix.com/yaesu/ft90r_service.pdf
- https://www.rigpix.com/yaesu/ft90r_manual.pdf
- https://www.vr2xkp.org/2018/03/04/a-simple-usb-programming-cable-for-yaesu-ft-90r/
- https://kc1sle.com/yaesu-ft-90-programming-cable-diy-instructions-make-it-yourself/