A Yaesu FT-817ND hardrock interface allows automatic band switching of the Hardrock-50 HF amplifier via FT-817ND and FT-818.
Weak Signal Propagation Reporter is a digital radio protocol for probing potential propagation paths. Learn how to receive WSPR with RTL-SDR.
Learn how to build a diode voltage reduction adapter for reducing battery voltage of your LiPo battery pack to a safe level for your radio.
Learn how to fit the YF-122S ssb filter into the Yaesu FT-817ND in order to improve the suppression of strong signals on adjacent channels.