
25
The Basics
When there is activity on an EDACS system, that
information is sent out on the control channel. The
scanner decodes the ID for the active talk group. In the
open mode, the scanner then goes to the transmission
and displays the talk group ID on the bottom line of the
display. In the closed mode, the scanner only goes to
transmissions with IDs that match talk group IDs you
have stored in the bank’s talk group ID list which are
not locked out.
Because EDACS scanning requires clear reception of
the control channel at all times, EDACS systems tend
to have a smaller usable area. An external antenna can
greatly improve EDACS scanning in a fringe area. If
you are having trouble scanning an EDACS system, try
manually selecting the data channel. If you are getting
good reception, the scanner will indicate talk group
CTL-01. Try changing your location or using an outdoor
antenna to improve reception.
LTR mode
You can set your scanner so it decodes the talk group
IDs used with LTR systems. This setting is called the
LTR mode.
LTR frequencies are organized in a specifi c order.
Each frequency is assigned a Home Repeater Number
(HR). For the scanner to correctly switch to an active
frequency, you must program the frequencies in HR
order, starting with Memory X01 in the selected bank.
Your PRO-2055 scanner features a new tool to help
you determine the correct channel mapping for LTR
system frequencies. The scanner’s LTR Repeater Finder
displays the current Home Repeater when monitoring
LTR transmissions in manual mode.
Содержание Pro 2055
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