GME TX685 User Manual
Page 10
PA G E 1 0
I N S T R U C T I O N M A N UA L
T X 6 1 5 0 / T X 6 8 5
NoTe:
The squelch sensitivity is preset in the Menu – Squelch Level setting (see Menu options for
more details on setting the squelch sensitivity).
Keypad lock
The Keypad Lock disables the keys to prevent accidental key presses from changing the preferred
settings of the radio. When the keys are locked, the
Icon is displayed and all key presses are
ignored except for the PTT, sQl and the Keypad unlock function.
To activate the Keypad Lock press the F key (the F icon will appear) then hold the
key until
the radio beeps. The
icon will appear on the display.
To cancel the Keypad Lock, press the F key then hold the
key again until the radio beeps.
The
icon will disappear.
Duplex operation
Duplex operation allows the radio to transmit on a different frequency to that which it receives. This
allows operation through repeater stations in your area. Repeaters automatically re-transmit your
signal over a much wider area, providing greatly increased range. The Duplex mode only works on
designated repeater channels 1 – 8 and 41 – 48. With Duplex selected on one of these channels,
your radio actually transmits 30 channels higher than it receives.
e.g. If Duplex is selected on channel 1, your radio will receive on channel 1 but will transmit on
channel 31.
Duplex can be enabled or disabled separately on individual channels. When Duplex is enabled on
the selected channel,
is displayed.
The Duplex Mode is set through the Menu. Please refer to the Menu options further below.
simplex/Duplex Range Comparison
SCANNING
Channel scanning allows you to monitor a sequence of selected channels for incoming signals.
NoTe:
While the radio is scanning, the Menu setting key is disabled.
To select Channels for scanning
1. Press the or ▼ keys to select the required channel.
2. Hold the sCAN key until the radio beeps.
will be displayed indicating the selected channel
is now stored in the Scan Memory.
3. Repeat to store further channels into the Scan Memory.
4. To remove a channel from the Scan Group, press the or ▼ keys to select the required channel
then hold the sCAN key until the radio beeps.
will disappear from the display.
To scan the selected Channels
Briefly press the sCAN key. The
icon will flash and the channel numbers will change as the
radio scans through the channels. While scanning, briefly press the or keys to change the scan
direction upwards or downwards.
CHANNEL 31
CHANNEL 1
CHANNEL 1
CHANNEL 31
VEHICLE
SIMPLEX
REPEATER
OPERATION
VEHICLE
REPEATER
STATION