Trunked systems utilize multiple repeaters and channels to handle large amounts of traffic as well as being able to have multiple departments on the same system.
It's kind of like at the store, when things get real busy, instead of one line, you can have multiple lanes to choose from to exit.
The control repeater will look for the unused repeater/channel to route the call through.(in a nutshell)
a couple links fer ya:
http://www.genesisworld.com/trunking.htm http://www.trunkedradio.net/modules.php?name=Web_Links
It's a pretty cool concept.
Atomic, usually there is a 5 Mhz offset between TX & RX.
example, mobile transmit might be 453.100 Mhz and Receive might be 458.100 Mhz. or vice versa.
My local PD is like that, on the lower freq, I hear both sides, but on the upper I only hear 1 side.
With trunked systems, you might hear cop fred talking on 825.675 Mhz, then he lets off the mike and then transmits again, but that channel is now busy, so the controller sees 835.425 is open so it sends the call thru that freq. Virtually impossible to follow a whole conversation without a scanner that can follow.
They use talk group codes to keep track of who needs to talk to who.
Linear Mode
