Peter VK3TPM stripped down my 2k lines of code to 200, for a bare bones si5251 VFO. It thats all you want, then maybe try this. https://bitbucket.org/peter_marks/dc ...
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Historically when hams built low power (QRP) transmitters, they’d use a crystal to set the frequency. Years ago, it was common to find crystals in all sorts of radios, including scanners and handheld ...
A PLL VFO/controller for a multi-band SSB/CW transceiver, targeting Arduino Nano and si5351. The script is SP_VFO_Controller.ino. An initialiser script must be executed once to initialise EEPROM. This ...