t X 4 5 0 0
I n s t r u c t I o n m A n uA l
PA G E 1 1
to scan a number of other channels. the receiver will
scan the other channels onlY WHIlE tHErE ArE no
sIGnAls on tHE PrIorItY cHAnnEl.
Channel
signals being received on the Priority channel will
override any signals being received on any of the other
channels. In addition, if you press the
PTT
at any time
the radio will always transmit on the Priority channel.
Setting up Group Scan
1. Briefly press
F
then
OS/GS
to select the Group scan
mode. ‘Group’ will be displayed briefly.
2. Program the required scan channels into the Group
scan memory (select the required channel then press
and hold the
SCAN
key so that
is displayed on
that channel).
3. Program your Priority channels as described earlier
under ‘Priority channel’ then select which of the
two Priority channels you wish to use for this Group
scan session. simply press the
PRI 1
key for Priority
channel 1 or press
F
then the
PRI 2
key for Priority
channel 2 prior to scanning.
4. now press the
SCAN
key. A high beep will be heard
and the scan symbol
will animate. During this
time the channel numbers will change rapidly as
the selected channels are scanned with the Priority
channel being scanned every fourth channel.
If a signal appears on the Priority channel – at any time
– the radio will switch directly to the Priority channel
and 3 short beeps will be heard. the radio will now
stay on the Priority channel for as long as the channel
remains busy. During this time you can transmit and
receive on the Priority channel in the usual way. once
the Priority channel has been clear for 5 seconds the
radio will resume scanning the other channels.
If a signal appears on one of the other channels,
scanning will pause on that channel and will remain
there while the channel is busy – as long as there are
no signals on the Priority channel. During this time,
the receiver will continue to check the Priority channel
every 2 seconds resulting in a series of small breaks in
the reception of the busy channel. once the signal has
gone and there has been no activity on any channel for
5 seconds, the radio will resume scanning.
to transmit on the Priority channel at any time,
simply press the
PTT
. the radio will switch straight
to the Priority channel. When you have finished your
conversation and there has been no further activity for
5 seconds, the radio will resume scanning the
other channels.
If the scan pauses on a busy channel and you don’t
wish to listen to that conversation, press the
Skip
key
or rotate the
Channel
knob. the radio will skip that
channel and resume scanning.
If the radio is paused on a busy channel and you want
to remain there, briefly press the
SCAN
key. the radio
will exit scan and remain on the busy channel. At this
point you will no longer be monitoring the
Priority channel.
to resume scanning press the
SCAN
key again.
to exit the scan mode and go directly to the Priority
channel at any time, press
PRI 1
for Priority channel 1
or
F
then
PRI 2
for Priority channel 2.
Scan Group options
By default your radio has one open scan mode and one
Group scan mode. there may be applications where
you have no need to monitor a Priority channel and
would prefer to have two separate open scan modes.
Alternately you may prefer to have two separate Group
scan modes with different scan channels in each. Your
radio can be programmed to convert the Group scan
into an open scan and vice versa. If this is required,
please contact your GmE retailer to arrange for this
feature to be activated.
When two open scan or two Group scan modes are
enabled, the scan Group selection screen will display
open1 and open2 for the open scan groups or GrP1
and GrP2 for the Group scan groups. see the section
‘
Selecting a Scan Group
’.
NOTE:
Enabling or disabling the second open or
Group scan mode is not a user selectable option. once
enabled or disabled, the new scan mode becomes a
permanent part of your radio’s features. If you decide
later that you need the original scan mode settings
restored you will need to return your radio to your GmE
retailer for re-programming.
CTCSS & DCS
the standard squelch system is fine for quietening the
radio in most applications. However it operates solely
on signal strength which means that it will always open
to any signal that is strong enough. If the channel is
busy with other stations the squelch will be constantly
opening which can make it difficult to determine which
calls are meant for you. ctcss/Dcs provides additional
selective receiver audio muting using sub-audio
signalling. When enabled, only signals with a matching
sub tone will be heard in the speaker. this effectively
creates a channel that is silent to all traffic except those
who use the same subtone as you.
