Connect a downconverter to a receiver

Up to eight downconverters can be directly connected to a Real Freedom Receiver. Each downconverter connects to one of the UHF BNC connectors on the rear panel of the receiver using a coaxial cable. The receiver powers the downconverter via the UHF connector.
CAUTION: Before connecting a downconverter to a receiver that is powered, you must switch off power to all BNC connectors on the back of the receiver to avoid damage to the downconverter’s OOK chip. To switch off BNC power, go to the receiver’s Receive BNC Power option in the Receive menu and disable power to all slots.

All downconverters should be of the same type and frequency band. For best RF performance, downconverters should always be installed in pairs with a separation of at least 30 cm between antennas.

Ensure cable runs do not exceed recommended lengths (400 feet for LMR 240 or 200 feet for other high-quality cable). The downconverter provides gain to compensate for the cable loss.
CAUTION: Never connect anything other than a BSI downconverter to the UHF BNC connectors on the receiver. These ports include output voltage that may damage other equipment.