Owner's manual

T X4500S I NSTRUCTI ON MA NUA L PAGE 27
The rear microphone cover hinges from the top.
Simply lift the cover from the bottom. The cover will
remain connected to the chassis.
Lift microphone cover
Plastic
tab
Position the microphone plug so the plastic tab faces
upwards then press the plug into the socket until
it ‘clicks’.
Removing the Microphone
For front panel connections, first squeeze the
grommet to disengage it from the slot then slide it
along the microphone cord.
For both connections, squeeze the microphone
plug’s plastic tab towards the plug to unlock it while
gently pulling on the microphone cable. The plug
should release from the socket. If the plug does not
come out easily, the tab has not been release fully –
squeeze the tab again.
ANTENNA INSTALLATION
It is essential to install a good quality, high
efficiency, 477 MHz antenna. A poor quality antenna
or one not designed for the specific frequency band
will give very poor performance.
GME have a huge range of suitable 477 MHz
antennas to suit most installations and applications.
We recommend you contact your local retailer for
advice.
After mounting the antenna, feed the antenna
cable to the DIN cavity in the vehicles console or
dashboard before mounting the radio.
High Voltage Detection
The radio has a built-in, high voltage detection
system to warn you if an overvoltage situation
occurs. If the power supply voltage exceeds 18
volts DC, the channel display will flash ‘hi dc’ for 5
seconds when the unit is first turned on, or at the
time the voltage exceeds 18 volts. In addition, when
transmitting, the TX indicator will flash and the
transmitter will select low output power.
If the overvoltage warning appears you should
switch your radio OFF and disconnect it from the
power source, before locating the cause of
the trouble.
Once the ‘High Voltage’ warning has been triggered,
and you have fixed the source of the problem, you
will need to switch the radio OFF then ON again to
reset it.
NOTE: The power source should never exceed 25 V.
WIRING
Antenna
12 V DC
RED +
Fuse
Coax cable
DC connector
Extension speaker
TX4500S
NOISE SUPPRESSION
The inherent design of FM transceivers results in
a high level of resistance to ignition and electrical
interference. However in some installations it
may be necessary to take additional steps to help
reduce or eliminate noise interference. During
installation, try to route the DC battery leads, the
antenna lead or any accessory wires away from the
engine compartment, ignition or alternator wiring.
If the noise continues, it may be necessary to fit a
suppression kit in which case we recommend you
consult an auto electrician for advice specific to your
installation.
Higher frequency electrical interference cause by
electric motors can be suppressed directly at the
motor terminals.
46885-4_TX4500S_IM.indd 27 4/06/14 3:08 PM