PAGE 10 INSTRUCTION MANUAL TX4500
Open Scan allows a group of channels to be scanned
in an ascending sequence. If a signal is found, the scan
will pause on that channel. During this time you can
press the PTT switch on the microphone and talk on
the channel. Once the channel has been clear for 5
seconds the scan will resume.
Example: Scanning channels 1 – 8 in Open Scan
1 - 2 - 3 - 4 - 5 - 6 - 7 - 8
Group Scan allows you to transmit and receive on your
Priority channel, but during periods of inactivity, the
radio will also scan a group of other channels. Signals
received on the Priority channel will have precedence
over those received on the other channels. Similarly,
pressing the PTT while scanning will cause the radio to
revert to the Priority channel. Once the Priority channel
has been clear for 5 seconds the scan will resume.
Example: Scanning channels 1 – 8 with Priority
channel 20 in Group Scan
1 - 2 - 3 - 4 - 20 - 5 - 6 - 7 - 8 - 20
Selecting a Scan Group
To switch between Open or Group Scan modes, briefly
press Fthen press OS/GS. Open or Group will be
displayed to the right of the channel display for a
few seconds.
To add or remove channels from the Scan
memory
1. Check that the radio isn’t already scanning. If it is,
briefly press the SCAN key to cancel the scan.
2. Select the required channel.
3. Check to see if the Scan symbol is displayed on
that channel.
I. If is displayed, the selected channel is
already in the Scan memory. Press and hold the
SCAN key to remove it. will disappear.
II.If is not displayed, the selected channel
is not in the Scan memory. Press and hold the
SCAN key to add the selected channel to the
Scan memory. will now be displayed on that
channel.
Quick select
To quickly switch between channels that have been
stored in the current Scan memory, briefly press the F
key then rotate the Channel knob. This will allow you
to manually step through only those channels that have
been stored in the current Scan group memory. During
this time Fwill remain on the display to confirm you
are still in ‘Quick Select’ mode. To exit this mode, press
the Fkey again or wait 10 seconds for the function to
time out.
This option can be used to quickly jump between
channels of interest or to quickly review which channels
are in the Scan memory for editing purposes.
Scanning in Open Scan mode
Briefly press the SCAN key. A high beep will be heard
and the Scan symbol will animate. During this time the
channel numbers will scroll rapidly as the channels
are scanned.
NOTE: If there are less than 2 channels programmed
into the Scan memory when you press SCAN, a low
beep will sound and the command will be ignored.
If a busy channel is located, the scan will pause to allow
you to hear the signal but will continue to animate on
the display to indicate that the scan function is still
active. Once the channel has been clear for 5 seconds,
the scan will resume.
If you don’t wish to listen to a busy channel you
can skip over it by pressing the Skip button on the
microphone or rotating the Channel knob. Scanning
will resume at the next available channel in memory.
Default working channel in Open Scan mode
In the Open Scan mode, your default working channel is
the channel your radio switches to when you press the
PTT while scanning. To define your working channel
simply select the required channel before you press
the SCAN key. e.g. to make channel 24 your working
channel, simply select channel 24 before pressing the
SCAN key.
To talk on your working channel while scanning,
simply press the PTT. The scan will pause and your
radio will switch to your working channel allowing you
to transmit and receive on that channel. Once your
communication has finished and the channel has been
clear for 5 seconds, scanning will resume.
If your radio pauses on a busy channel (other than your
working channel) and you wish to talk on that channel,
simply press the PTT during a break in the conversation.
The busy channel now becomes your new working
channel, replacing your previous working channel. Once
your communication has finished and the channel has
been clear for 5 seconds, scanning will resume.
Scanning in Group Scan mode
Group Scan mode is slightly different to Open
Scan mode in that the Group Scan allows you to
communicate on your Priority channel while continuing
