User's Manual

20-496 Owner’s Manual Draft Page 55/78
scanning.
2. Press FUNC and then TRUNK while the scanner is stopped on a voice channel transmission. The bank
text display is replaced with a sub-bank status display, T IDbk 01234. The flashing cursor will indicate the
current active sub-bank.
3. Press FUNC and the number of the sub-bank you wish to turn on or off (0-4). For example, to toggle
sub-bank 4 on or off, press FUNC, then 4.
Open and Closed Mode Operation
You can set your scanner to change the way it receives transmissions on Motorola, APCO-25 and EDACS
trunked radio systems. These settings, called Open Mode and Closed Mode, control whether the scanner
monitors all traffic from a trunked radio system, or only traffic from talkgroups you specify. Unlike the
channel mode settings described above, Open/Close mode settings apply to a trunking system
programmed into a single bank.
Note: In Open Mode, you hear all active talkgroups except those you specifically exclude, making it easy to
hear everything going on. In Closed Mode, you hear only those talkgroups you specify. This makes it easy
to listen only to talkgroups you are interested in and exclude others
Each scanner bank can be programmed with one trunked system. You can set each of the scanner’s
channel storage banks to Open or Closed Mode.
Conventional modes (AM, FM/Digital, CT and DC) are not affected by the Open/Closed Mode setting of a
bank.
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.
Traffic on locked out talkgroup IDs is ignored when the scanner is operating in Open and Closed Modes.
In Open Mode, the scanner will stop on all talkgroup traffic, except for traffic on talkgroups that are entered
in the ID list and locked out. In Closed Mode, the scanner will only stop on talkgroup traffic if the ID is
entered in the ID list and not locked out.
Open Mode scanning is useful in cases where you wish to monitor all traffic on the trunked system, except
for certain talkgroups which you specify by entering them into the ID list and locking them out. Open Mode
scanning allows you to search the trunking system for new or previously unknown talkgroup activity while
ignoring traffic on undesired talkgroups.
Closed Mode scanning is useful in cases where you wish to restrict the traffic you monitor to a certain set of