User's Manual

20-527 Owner’s Manual Draft
Page 16 of 60
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 ID code.
Open and Closed Modes
You can set your scanner to change the way it receives signals. These settings, called open mode and
closed mode, affect how the scanner receives signals from communications systems that use some type
of closed squelch (such as Motorola, EDACS, and LTR systems).
Notes:
• In open mode, you hear all active talk groups except those you specifically exclude, making it easy to
hear everything going on. In closed mode, you hear only those talk groups you specify. This makes it
easy to listen only to talk groups you are interested in and exclude others.
• When you select a channel manually, any transmission opens squelch, regardless of the current mode.
• When no ID code is programmed into the scanner, it receives the signal in MO, ED, or LT mode. In
open mode, the scanner stops on any transmission. If the ID is stored, the text tag appears on the
display. Otherwise, the talk group ID appears on the display. In closed mode, the scanner only stops on
a transmission if the ID is stored.
You can set each of the scanner’s channel storage banks to open or closed mode.
In open mode, the scanner scans signals transmitted in all systems. The scanner stops on any ID code
and only uses the ID list to look up ID text tags.
In closed mode, the scanner stops only on signals that have an ID code which is found in the ID list for
the bank. Also, the scanner scans signals transmitted only under the following conditions:
• When the signals are in the FM mode.
• When the signals are in the MO, ED, or LT mode and the signal’s ID code matches the programmed ID
code
You can also select the user or talk groups you want the scanner to receive in closed mode.
When you set a channel storage bank to open mode, + appears under the bank’s number while scanning.
When you set a channel storage bank to closed mode, - appears under the channel storage bank’s
number while scanning. OPEN or CLOSED appears while the scanner is in manual mode or while the
scanner is receiving a signal during scanning. See “Changing the Open/Closed mode” on Page XX for
more information about setting the open and closed modes.