User's Manual

20-523 Owner’s Manual
Page 14
EDACS frequencies are organized in a specific order. Each frequency is assigned a Logical Channel
Number (LCN). For the scanner to correctly switch to an active frequency, you must program the frequencies
in LCN order, starting with Memory 01. EDACS talk group IDs are entered as a 4-digit decimal number from
0001 to 2047 or AFS (Agency Fleet Subfleet) number from 00-001 to 15-157.
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.
Operation
TURNING ON THE SCANNER AND SETTING SQUELCH
1. Turn SQUELCH fully counterclockwise until the indicator points to MIN before you turn on the scanner.
Add illust
2. To turn on the scanner, turn VOLUME clockwise. Welcome To Dual Trunking appears. After about 3
seconds, you hear a hissing sound.
3. Turn SQUELCH clockwise, just until the hissing sound stops.
4. To turn off the scanner when you finish, turn VOLUME counterclockwise to OFF.
Notes:
• The scanner does not scan if there are no frequencies stored in channels. If the scanner does not scan and
you have already stored frequencies in channels, turn SQUELCH further clockwise.
• If the scanner picks up unwanted, partial, or very weak transmissions, turn SQUELCH clockwise to
decrease the scanner’s sensitivity to these signals. If you want to listen to a weak or distant station, turn
SQUELCH counterclockwise.
• If SQUELCH is adjusted so you always hear a hissing sound, the scanner will not scan properly.
• To ensure the scanner operates properly while in the trunking mode, we suggest you set SQUELCH using
the above steps, even if the scanner is automatically muted.
STORING KNOWN FREQUENCIES INTO CHANNELS