Si5351 PCB: ali.pub/5gmqrv ali.pub/5gmqxb
Arduino Nano: ali.pub/5gmqlu ali.pub/5gmr1l
Source code: doc-126082062_585035333
Сircuit : photo-126082062_457244192
The Karat-2 radio operates in single-sideband modulation on one fixed frequency. Tuning the radio to another frequency requires replacing the quartz resonator and tuning the circuits in the laboratory.
This video shows the installation of a frequency synthesizer instead of a standard crystal oscillator. As a result, the radio can operate on several frequencies (channels), programmed into the controller.
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22 янв 2021