[Motorola] Request Information on C63RLB7106B

[thardy8664 at aol.com]

Hello
I am trying to figure out this C63RLB7106B "MSF Limited". It is connected by wire line control to a Centracom 11 console. I am confounded by the receive and transmit arrangement. It has (1) receive port and (2) TX ports, one on 154.250, and the other on 152.0075. Is this set up as a repeater or as two channel "Base"? Each of the TX ports is fed to a TX-RX Dual-Section Isolator, and the Isolator is fed to a band Rej. cavity (of opposite fx, of course), then each fed to a band pass cavity, which is fed to a common antenna. The Rec. port(154.250) of the radio is connected to a relay, which is connected between the output of the isolator (154.250), and the input of the band reject.
 
The radio appears to be programmable (Has channel mode key), a red LED "Status" window, and a "select"/"Set" switch. (It reminds me of the MSF 5000).
 
Our task is to add another frequency pair to the radio system (159.000 rec./154.995 xmit). I can't see how we can do that, when the cavitys are tuned for a descrite frequency!
 
This radio system is a fire dept paging system, and used for "local" comm. Do appreciate any help, or advise.
 
Tim Hardy
W7TRH