This cable connects to the EXT CTRLÂ jack on the SunSDR2 PRO and to an external amplifier or other device to let you control Transmit/Receive switching automatically from the transceiver.
The cable is fitted with a CPC1035N optocoupler that separates the SunSDR2 PRO from the externa device for added protection against physical damage and RFI.
Remember to activate the “AMP” button in ExpertSDR2 PRO to activate PPT output.