GME TX3520W - Manual (Page 13)

PA G E 1 2 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 3
2. Press MENU repeatedly until ‘sstxx’ is displayed where xx
= ON or OF.
3. rotate the Channel control to the right (or press the
key) to enable the silent squelch tail. ‘sston’ will be
displayed and the squelch tail will become silent.
4. rotate the Channel control to the left (or press the
key) to disable the silent squelch tail. ‘sstoF’ will be
displayed and the squelch tail will be restored.
when finished, briefly press the PTT to exit.
rEPEAtErS AND DUPLEX MODE
Duplex operation allows the radio to transmit on a different
frequency to that which it receives. this allows operation
through repeater stations.
A repeater station consists of a linked transmitter/receiver
combination installed in a prominent location. the repeater
is designed to receive signals on a designated channel and
retransmit them on another channel. repeaters are usually
mounted on hills or tall buildings. the increase elevation
greatly improves both the receiving and transmitting range of
the repeater allowing it to receive and retransmit signals to
radios that would otherwise be out of range of each other.
normally, uHF radios transmit and receive on the same
frequency – known as simplex operation. However to
communicate through repeaters, your radio must be able to
transmit and receive on different channels – otherwise known
as Duplex operation. Your radio is fitted with a Duplex key to
allow you to operate through repeaters.
the Duplex function can only be selected on channels 1 – 8
and 41 – 48 as these are the channels that have been
allocated for repeater use. when Duplex is selected, your
radio receives on the selected channel (e.g. cH 1) but
transmits 30 channels higher (cH 31). the repeater hears your
signal on cH 31 and retransmits it on cH 1 for others to hear.
CHANNEL 31
CHANNEL 1
CHANNEL 1
CHANNEL 31
VEHICLE
SIMPLEX
REPEATER
OPERATION
VEHICLE
REPEATER
STATION
Your radio allows you to enable or disable Duplex mode
on individual repeater channels. In this way any repeater
channels that are not being used with repeaters in your area
can be used in simplex mode for normal direct radio-to-radio
communications.
Channel Selected Receive Channel Transmit Channel
1 1 31
2 2 32
3 3 33
4 4 34
5* 5* 35*
6 6 36
7 7 37
8 8 38
41 41 71
42 42 72
43 43 73
44 44 74
45 45 75
46 46 76
47 47 77
48 48 78
*Emergency channel only
To Enable Duplex on a repeater Channel
1. select the required repeater channel (1 – 8, 41 – 48).
2. Press F followed by the DUP key. the duplex symbol
will appear on the display accompanied by a high beep.
To remove Duplex from a repeater Channel
1. select the required repeater channel (1 – 8, 41 – 48). If
duplex is currently selected, the duplex symbol will be
displayed.
2. Press F followed by the DUP key. the duplex symbol
will disappear from the display accompanied by a low beep.
iMPOrTaNT: channels 1 – 8, 31 – 38, 41 – 48 and
71 – 78 should only be used in simplex mode if there are
no repeaters in or near your location that operate on the
selected channel. In particular, avoid operating in simplex
mode on any of the repeater input channels 31 – 38 and
71 – 78 unless you are absolutely sure that there are
no repeaters in range using that channel. Inadvertently
transmitting on an active repeater input frequency in simplex
mode could cause interference to other users on that repeater
that would not be audible to your radio.
PrIOrIty ChANNEL
the Priority channel feature allows you to instantly recall any
one of the 80 channels in your radio. this feature can be
used to provide instant access to your working channel or
your local repeater channel at the press of key. It is also used
in conjunction with the Group scan mode.
To Store a Priority Channel
1. select the required channel.
2. Press F then press and hold the Channel control (or lVl
key). the channel number will flash then a high beep will
be heard as the channel is stored.
To recall a Priority Channel
1. Press F then briefly press the Channel control (or lVl
key). the radio will immediately switch to the Priority
channel and ‘PrI’ will be displayed for a few seconds.
NOTE: If the radio was scanning when the Priority channel
was recalled, the scan will be cancelled.
SCANNING
Your radio incorporates a scan function allowing selected
groups of channels to be scanned for signals. channels
can be scanned at a rate of 40 channels per second.
when a signal is found, scanning will pause to allow
the signal to be heard then resume scanning when the
channel is clear again.