GME TX3420 - Manual (Page 18)

PA G E 1 8 i n s t r u c t i o n m A n uA l t X 3 4 2 0
battery / s-meter / alPha selectioN
the tX3420 has the option of displaying either the battery
voltage or the incoming signal strength (s-meter) in the area
beneath the channel display . in addition, when ‘listening’
channels (81-99) are selected, the radio provides an extra
option of displaying the frequency of the selected user
channel or a custom AlPhA label (when AlPhA mode
is selected) .
the listening channels are treated independently to the
normal uhf cb channels in that you can for example,
select s-meter or battery Voltage on channels 1-80
yet display the channel frequency (or an AlPhA label)
on channels 81-99 .
to display s-meter
or battery Voltage on channels 1-40
1 . select a channel from 1-40 .
2 . Press and hold the meNu key until the radio beeps .
3 . briefly press the meNu key repeatedly until ‘s-mEt’
(s meter) or ‘bAtt’ (battery) is displayed .
4 . rotate the channel knob to select your preferred choice
of s-met and batt .
5 . Press and hold the meNu key until the radio beeps,
to store the setting .
to display s-meter, battery Voltage
or Frequency/alpha label on listening
channels (81-99):
1 . select a channel from 81-99 .
2 . Press and hold the meNu key until the radio beeps .
3 . briefly press the meNu key repeatedly until ‘s-mEt’
(s meter), ‘bAtt’ (battery) or ‘AlPhA’ is displayed .
4 . rotate the channel knob to select your preferred choice
of s-met (s meter), batt (battery) or alPha .
5 . Press and hold the meNu key until the radio beeps,
to store the setting .
INsTAllATION
the tX3420 main unit is supplied with a slim, slide-on
mounting cradle . the cradle can be screwed or bolted in
any convenient location in your vehicle (under or above the
dash, on the centre console, under the seat, in the boot,
etc .) using the mounting slots provided in the base . the
main unit contains a built-in speaker, and can be installed
in a convenient location in the vehicle’s cabin as the radio’s
loud speaker . Alternatively it can be installed ‘out of the
way’ and an extension speaker used instead .
the remote head comes complete with a slim mounting
bracket and gimbal knobs . its small size and light weight
design allows it to be mounted in almost any convenient
position accessible to the driver .
Note: if your installation does not require the use of a
remotely mounted control head, you can convert your
tX3420 to a compact underdash radio by fitting the remote
head front panel directly to the main unit as described on
page 20 .
When installing the radio, avoid mounting it close to
heaters or air conditioners . screw the mounting cradle and
the remote head bracket to firm surfaces . slide the tX3420
main unit into the cradle from the front until it clicks into
place . Position the remote head in its mounting bracket,
adjust it for the correct viewing angle and tighten the
gimbal knobs securely . finally, plug the remote head into
the front panel of the tX3420 and the power and antenna
leads to the sockets provided on the rear of the radio .
aNteNNa iNstallatioN
it is essential to select a good quality, high efficiency,
477 mhz antenna . A poor quality antenna or one not
designed for the specific frequency band you are using
will give very poor performance .
GmE have a wide range of suitable 477 mhz uhf cb
antennas to suit most installations and applications .
We recommend contacting your local GmE retailer for advice .
connect to the antenna cable to the rear antenna socket
using a Pl259 coaxial connector .
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 .