- Jan 6, 2005
- Holland, Ohio
The CIS system is a full-duplex radio system. what does this mean? i see there is only an output frequency listed. does this have something to do with it? thanks!
Tophtoh said:its in the toronto page. the for toronto city buses. thanks for your reply this help. may i ask do you know how trunking systems work? are they full, half or simplex?
fineshot1 said:Trunking systems are multi-channel computor controlled full duplex repeater systems. The only simplex repeaters are the "voice store & forward" types but I don't think there are too many out there these days(watch a bunch of RR users jump on me for saying that).
n2mdk said:Trunking system like all repeater based systems are half duplex, full duplex systems are like telephones they receive and transmit at the same time. If it uses a PTT it can only be half duplex at most.
DaveNF2G said:"Half" or "full" duplex are defined according to what the user can do.
fineshot1 said:Warren - the OP asked about a trunking system. Not the system users equipment.