30
Monitoring IDs
You can use your scanner’s display to
monitor the frequencies in a trunked
system for activity. You cannot hear
conversations in this mode, but this is
an excellent way to determine which
talk groups are the most active. To set
the scanner to monitor IDs, hold down
SEARCH
until the scanner beeps
twice.
SEARCH
flashes, and all active
talk group IDs appear in succession.
To stop monitoring IDs, press
SEARCH
again.
Note: When you monitor IDs, locked-
out IDs also appear.
CHANNEL ACTIVITY
INDICATORS
Your scanner has 30 channel activity
indicators (bars) which show the activ-
ity taking place on a trunked system.
You can see how many frequencies
are being used and generally monitor
how much communication traffic is oc-
curring.
Each frequency you store in a trunking
bank has a corresponding activity indi-
cator.
• The indicator that remains on
steadily even when there are no
current transmissions represents
the frequency being used as the
data channel.
• The indicator that flashes when an
ID appears represents the fre-
quency being used by the radio
you are currently hearing.
• If an indicator turns on but you do
not hear a conversation, the chan-
nel is probably being used for a
telephone interconnect call or a
private call, or the indicator might
be a locked-out ID. Your scanner
does not monitor these types of
calls.
• If the scanner is holding on an ID
which is not active, the other activ-
ity indicators turn on and off as
other groups use the system.
20-430.fm Page 30 Wednesday, August 4, 1999 1:29 PM
