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An EDACS
®
Trunked system
This chart shows how talkgroups are organized within an
EDACS system at the Agency level. The individual
talkgroups cannot be shown at this scale because there are
over 2000. However the chart can show the 16 Agencies in
this example. The system is logical and easy to understand.
EDACS systems are typically arranged in an outline
structure.
The system users are given blocks of talkgroups. Sizes vary
but most large cities and other agencies have blocks of 128
channels. Smaller cities have only 64 or 32 channels.
In this example, the County Sheriff is agency 01. The city of
Sullivan is Agency 03. Adams Hill and Matthew Junction
share Agency 08.
Your scanner shows EDACS talkgroups in AFS (Agency-
Fleet-Subfleet) format. This helps you see, at a glance, who
you are monitoring. And with the partial-entry feature you
can easily include nearby, related channels in the same
Fleet or Agency. You can just as easily exclude entire
unwanted Fleets and Agencies.
When in Search mode, with the system frequencies
programmed, and your scanner locked to the control
channel, you can select a desired city by keying in the
Agency part of the AFS talkgroup. For example, you can
select the entire city of Sullivan with 4 key presses 0, 3,
(decimal key), SRCH.
When you hear an interesting talkgroup, capture it to your
Scan List by pressing TRNFR and E during the
transmission.
Or hold on it by pressing the ▲/HOLD key.
If you want to monitor the Sullivan Police Dispatch channel
(which is talk group 03-062), press 0, 3, (decimal key),
0, 6, 2, RSM or SCAN.
Your scanner can also work in decimal format.
This talkgroup in decimal format is 434. But decimal format does not give you any information
about the system hierarchy.
For example Sullivan, in decimal, uses channels from 384 to 511. This is not as easy to
remember as Agency 03. But decimal is useful if you need to work from decimal talkgroup lists.
Special EDACS
®
Features
AFS Partial Entry Feature
AFS is Uniden's method of encoding EDACS talkgroups.
AFS stands for 'Agency-Fleet-Subfleet'.
AFS talkgroups are used in all EDACS reception -- in ID Search, ID Lockout and ID Scan Scan
.
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