TX2720
INSTRUCTION MANUAL
PAGE 9
point should 13.8 volts ONLY when the
ignition is switched ON or in the ACCESSORY
position
The radio should now switch ON and OFF
automatically with the vehicle’s ignition switch.
MICROPHONE
The TX2720 is fitted with two microphone
sockets – one on the front panel and one on
the rear. The 6 pin microphone connector can
be plugged into either socket. In fact, if the
situation requires it, two microphones can be
connected simultaneously.
Front
The front microphone socket is fitted with a
hard protective cover. The cover is a press fit. To
remove the cover insert a paper clip or similar
into the small slot in the edge of the cover and
lift the cover away from the panel. Retain the
cover in case you require it later on. Position
the microphone plug so the plastic tab faces
upwards then press the plug into the socket
until it ‘clicks’. Gently press the rubber strain
relief grommet into the hole surrounding the
socket so that the slot around the grommet fits
neatly inside the lip inside the hole.
Rear
If using the rear microphone connection you
should obtain the optional LEM6P rear
microphone extension lead. Mount the
extension lead’s socket on a convenient
location and feed the plug through the
dashboard to the DIN cavity.
Remove the rubber grommet from the rear
microphone socket and retain in case you
require it later on. Position the microphone plug
so the plastic tab faces upwards then press the
plug into the socket until it ‘clicks’.
Removing the Microphone
For the front panel connection, first squeeze
the grommet to disengage it from the slot then
slide it along the microphone cord.
Now 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
released fully – squeeze the tab again.
ANTENNA INSTALLATION
It is essential to install a good quality, high
efficiency, 27 MHz antenna. A poor quality
antenna or one not designed for the specific
frequency band will give very poor performance.
GME have a large range of suitable 27 MHz
antennas to suit most installations and
applications. We recommend you contact your
local GME dealer for advice.
After mounting the antenna, feed the antenna
cable to the DIN cavity in the vehicles console
or dashboard before mounting the radio.
Connect the antenna cable to the rear antenna
socket using the PL259 connector.
Radio remains ON when ignition switch is OFF
RED
Fuse
Fuse
BLACK
Chassis
Car battery
Ingnition Switch
Radio turns ON and OFF with ignition switch
RED
BLACK
Chassis
Car battery
Ingnition Switch
To Radio
To Radio
Cable Entry
Screwdriver
Locking Lever – push
down to release plug
Microphone Cable
