To allow multiple users to share one carrier frequency, many handheld transceivers employ Continuous Tone Coded Squelch System (CTCSS) encoders and decoders. CTCSS systems add a tone at the low end of ...
The project is an open source GNU repeater controller that is built around the Atmel ATMega1281 microcontroller while using all SMD components. Along with the microcontroller are the picoOS RTOS and ...
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