The trouble with the SDRplay SDRs is they are so versatile I tend to use it in preference to any other receiver. With its huge range and the amazing facilities of the SDRuno software I am always grovelling under the bench changing antennas.
For this project I use an Arduino to read the current frequency using the CAT interface. The user can configure at which frequency the Arduino selects which antenna via suitable relays.
See the full details and the .ino file here:-
https://github.com/G4FEV/SDRUno-Smart-Switch
