A fellow ham recently purchased and assembled a nice little signal generator kit consisting of a DDS AD9910 signal generator board/shield, Arduino Mega, OLED display, and TCXO option. I had borrowed it from him for the purpose of generating some modulated AM test signals to check the performance of some 20 MHz oscilloscopes I plan […]
Doing the engineering work on a multi-site, simulcast paging system necessitates keeping a check on the operational status of several transmitters which are — by design — geographically spread out all over the place. Anything which can automate some of the process of testing (and, ideally, provide remote, real-time monitoring) is a huge help. Not […]