rpitx is a general radio frequency transmitter for Raspberry Pi which doesn’t require any other hardware unless filter to avoid intererence. It can handle frequencies from 5 KHz up to 1500 MHz.
A Primer On Mics For Ham Radio. Difference between dynamic and condenser microphones, microphone plugs and differences in kind of microphones available on the market
Receive GOES-16 and GOES-17 Images with a Raspberry Pi and RTL-SDR dongle
A 3.2m EME dish project that provides a better performance on 1296 MHz (10+dB sun noise vs. 6dB with my 432 array) and an even better performance on 2304 MHz
The CW Projects and Resources of Mike Maynard, K4ICY. Includes a brief history and overview of Morse Code and many interesting resources on telegraph
Pass Recorder is a small application that records audio from satellite passes based on tracking data it receives from the commonly used SatPC32 application
Run Morse Runner on Apple MacOSX computers using Wineskin. Morse Runner is a popular MS Windows morse code contest simulator. You can do this by yourself or just download the ready-made dmg and use it on your apple mac.