CAT-300DX One Repeater And Two Transceiver Configuration
The figure below describes how to connect a repeater and two transceivers to the CAT-300DX controller. Transceiver selection is accomplished by grounding two of the three control lines. Since the receiver audios are mixed, all three receivers can be selected at the same time. To select a transceiver, connect the CAT-300DX user function switch outputs to the control line inputs on the RLS-1000B. Dip-switch #8 will force the port one audio switch on.