Duplex

[firemedic2150]

I was wondering if their was a way to set up TG's so that they act like a duplex system? I have a local taxi service that appears to use one TG to dispatch out, but all the mobiles seem to use another TG to talk back. I know that you could manually switch channels but this happens very fast so it must be in the programming.

Thanks,
Mark Mc.

 

[DaveNF2G]

On some trunked systems, it is possible to enable two units to transmit at the same time on the same talkgroup and to be able to hear each other. Taxi services usually don't want the drivers hearing each other, which is why repeaters are rare. The two-frequency simplex isolated comms are simulated in trunking by assigning each cab to its own talkgroup, which preserves the apparent "privacy" of the original VHF taxi channels.