GME TX3540S - Manual (Page 17)

PA G E 1 6 I N S T R U C T I O N M A N UA L T X 3 5 1 0 S / T X 3 5 2 0 S / T X 3 5 4 0 S T X 3 5 1 0 S / T X 3 5 2 0 S / T X 3 5 4 0 S I N S T R U C T I O N M A N UA L PA G E 1 7
any member of the group transmits, their radio automatically
selects a clear channel to transmit on. Other radios scanning
in the same Net-scan group will lock onto that channel
allowing all members of the group to join the conversation.
If a signal from outside your Net-Scan group appears on the
chosen channel (either with no code or the wrong code), the
group will automatically switch to a new clear channel at
the next transmission. In this way the group can continue to
communicate with minimal interference to or from other users.
Enabling Net-Scan
Net-Scan is normally switched off by default but can be
enabled through your radio’s menu.
NOTE : When you enable Net-Scan you will also be prompted
to choose a suitable CTCSS or DCS tone to be used by your
Net-Scan group. All members of your Net-Scan group must
use this same code.
To Enable Net-Scan
1. Press and hold MENU to enter the menu.
2. Press MENU repeatedly until ‘NS xxx is displayed.
3. Rotate the Channel control (or press the or keys)
to change the current Net-Scan setting.
• To enable Net-Scan using CTCSS, select from NS-01 to
NS-50 (CTCSS tones 01 to 50).
• To enable Net-Scan using DCS, select from NS001 to
NS104 (DCS codes 001 to 104).
• To disable Net-Scan, select ‘NS-OF’.
When finished briefly press the PTT to exit the menu.
Selecting Net-Scan
When Net-Scan is enabled, a Network scan option becomes
available in the scan group selection. To select Network
Scan, repeatedly press F followed by OS/GS until ‘NETWK’
is displayed.
Programming Channels into Net-Scan
All radios in your Net-Scan group must have the same
channels programmed into their Net-Scan memory.
Your radio’s Net-Scan memory has already been factory
programmed with 43 of the available 80 channels. The
remaining 37 channels, which consist of the 32 repeater
input/output channels, 2 telemetry channels and 3 guard-
band channels, have not been included to minimise the risk of
interference to other services on these channels.
To Add or Remove Net-Scan Channels
With Net-Scan mode enabled,
1. Select the required channel using the Channel control (or
the or keys).
2. Check to see if the scan symbol is displayed on that
channel.
• If is displayed, the selected channel is already in the
scan memory. To remove it, press and hold SCAN.
will disappear.
• If is not displayed, the selected channel is not in the
scan memory. To add it, press and hold SCAN. will
now be displayed on that channel.
Repeat to add or remove further Net-Scan channels.
IMPORTANT: When adding channels to Net-Scan, please
consider the following:
• The transmitter on your radio is inhibited on channels 22,
23 and channels 61, 62, 63 as required by the ACMA.
This makes these channels unsuitable for use as Net-Scan
channels.
• You should not include any repeater channel unless you
have confirmed that the channel is not allocated to a
repeater in your area. Using an active repeater channel in
Net-Scan may result in interference to other repeater users
on that channel.
Starting Net-Scan
With Net-Scan mode enabled, press SCAN. A high beep will
be heard and the
icon will animate. During this time the
channel numbers will change rapidly as the channels
are scanned.
Using Net-Scan
When a member of the group initiates a transmission their
radio will automatically select a clear channel to transmit on.
Other radios scanning in the same Net-Scan group will locate
the transmission by identifying the groups CTCSS/DCS code
and open their Squelch allowing the transmission to be heard
across the entire group. When the transmission ends, all
radios in the group will immediately resume scanning.
If a member of the group responds to the initial transmission,
they will automatically re-use the same channel as long as the
channel remains free of other signals. This allows the radios
in the group to respond more quickly to further transmissions
from others in the group.
If at any time, a signal from outside your Net-Scan group
appears on the channel (either with no code or the wrong
code), the channel will be discarded and a new clear channel
will be selected at the next transmission. The other radios
in the group will then locate the new channel allowing the
conversation to continue seamlessly without any input from
the user.
Ending the Scan
To stop scanning, briefly press SCAN. A low beep will be
heard and the animated
icon will stop. As long as
the radio was not on a busy channel, it will return to the
last channel you selected, otherwise it will stay on the busy
channel.
Quick select/check
To quickly switch between channels that have been stored in
the current scan memory, briefly press the F key then rotate
the Channel control (or press or keys). This will allow
you to manually step through only those channels that have
been stored in the current scan group memory. During this
time F will remain on the display to confirm you are still in
‘Quick Select’ mode. To exit this mode, press the F key 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.