This video shows how I managed to get VarAC using EESDR (for SunSDR Transceivers) to work with the EESDR V3 alpha software.

Add TCI (Transceiver Control Interface) for EESDR (Expert Electronics) SDR rigs TCI allows frequency control, RX/TX via either of the two available Receivers/Transmitters TCI is faster for obtaining Rig Data and PTT control for EESDR rigs Be nice if VaraHF supported the TCI audio paths as which I will suggest to Jose, TCI info- maksimus1210/TCI: Transceiver Control Interface (github.com)