[TrunkCom] TrunkTrackers and encryption

[José E. Torres]

Actually, the control channel has always been Digital data.

Mainly you have three types of Motorola trunk systems (I know about 
VSELP but they're almost extinct by now):

-3600 CC and analog voice
-3600 CC and using both, P25 digital voice and analog voice (also known 
as mixed-mode)
-9600 CC and P25 digital voice (also known as fully-compliant APCO 25 
system)


On Sep 26, 2004, at 10:53 AM, JERRY NONE wrote:

> Actually from what I have read 3600 Systems are where
> the Control Frequency is Analog and the Voice
> Frequencies are Digtial while the 9600 Systems have
> Digtal Control and Digital Voice.
> Casue even with my Pro-92B I can watch the Talk Groups
> pop up on the Cleveland 3600 VSELP system but I cannot
> listen to it since it is Digital and AMBE(?) instead
> of IMBE.