Motorola Mototrbo Mobile XPR 4550/4580 as a donor radio

These devices have a Rear Accessory Connector. Pins 14 (Rx Audio) and 12 (Audio GND) can be connected to an analogue channel on the Total Recall VR recorder (to either pins 3 and 4, or pins 2 and 5 of an RJ12 connector on the recorder).