Doug, I have interfaced a radio to a FOB and am able to get all functions working except txaudio. When trying to adjust it using the radio tune command it gives be back Garage3*CLI> radio tune rxnoise 41189 Device usb currently not active [ The just the radio tune gives Garage3*CLI> radio tune Active radio interface is [usb] Device String is Card is -1 Output A is currently set to composite. Output B is currently set to off. Tx Voice Level currently set to 500 Tx Tone Level currently set to 200 Rx Squelch currently set to 725 Usage: radio tune <function> rxnoise rxvoice rxtone rxsquelch [newsetting] txvoice [newsetting] txtone [newsetting] auxvoice [newsetting] save (settings to tuning file) load (tuning settings from EEPROM) All [newsetting]'s are values 0-999 The instructions on the docs.allstarling.org about adjusting radio parameters seem to refer only to the URI. Can you tell me the way to change the active device so that I can adjust and save the parameters and make the same usb port attach to the same node number every time? Thanks, Cole AA7RD