User's Manual
For example, the complete AFS for the Police Department
West District’s dispatch channel might be 01-062. 01
identifies the agency as the police department, 06 identifies
the fleet as the West district, and 02 identifies the subfleet as
the dispatch channel. While these assignments are
somewhat arbitrary and vary from system to system, there
are many resources on the web for finding the assignments
for most systems. Because of the logical hierarchy of the
AFS system, your BC898T lets you assign wildcard ID’s that
let you, for example, use only one ID memory to identify all
units in either an agency or a fleet.
z EDACS SCAT – EDACS SCAT (Single Channel Autonomous
Trunking) systems operate on a single channel and alternate
control data with analog voice traffic. While your BC898T
cannot track ID’s in this system, it can eliminate the control
data so that all you hear is the voice transmissions when you
monitor this type of system.
LTR Trunking
LTR® (Logic Trunked Radio) systems are trunking systems used
primarily by business or private communications service providers,
such as taxicabs, delivery trucks, and repair services. These
systems encode all control information as digital subaudible data
that accompanies each transmission, so there is no separate
control channel. Users on an LTR system are assigned to specific
talk groups, which are identified by the radio as six digit numbers.
These numbers are in the form AHHUUU, where:
A= Area code (0 or 1)
H= Home repeater (01 through 20)
U= User ID (000 through 254)
When the scanner receives a transmission on a channel set to the
LTR mode, it first decodes the LTR data included with the
transmission. In the ID Search mode, the scanner stops on the
transmission and displays the talk group ID on the display. In the ID
Scan mode, the scanner only stops on the transmission if the LTR
data matches a talk group ID that you have stored in the bank’s talk
group ID list and have not locked out.
LTR systems are frequently programmed so that each radio has a
unique User ID.
LTR systems also need to be programmed into your scanner in
channel-order.
Since many LTR systems use only odd-numbered channel slots,
you would program these systems using only the corresponding
odd-numbered channels in a bank (for example, you would program
a system with channels at 1, 3, 5, and 9 into Trunk 2 channels 101,
103, 105, and 109).
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