@jhooten said:
Back in the Dark Ages (analog) 154.95 was the mobile transmit half of the intercity pair. The base transmit frequency was 155.370. Intercity took up two "channels" in car our radios. One was labeled Car to Car, 154.95 Simplex CSQ. The other was labeled either Mobile to Base, or just Intercity, 154.950 transmit/155.370 receive CSQ. Dispatch also has two intercity channels. One was 155.370 Simplex CSQ to be used to talk to other agencies base to base. The other was 155.370 transmit/154.950 receive CSQ for dispatch to be able to talk to mobile units from other agencies
Many Dispatch's had dtmf selcall for base to base calling to check on warrants etc or advising that someone(s) were headed into another County..but many left the monitor on and if they heard another base asking for wanted status on someone - they would /could chime in and say "hey we have warrents on him/her too"
This was before advanced TLETS- mdts- 800 mumbers and was used to advoid long distance calls.