GME TX3345 User Manual
Page 19

You can also arrange to send SelCalls to every tenth radio 
by setting the second digit to A.
e.g.
Sending Ident 145A5 will call radios 14505, 14515, 14525, 
14535.. --> 14595
Call acknowledge in Group mode
There is no call acknowledge when sending group calls. 
This is to prevent all the radios in your group from trying to 
respond to your SelCall transmission at the same time.
Storing Group Call Idents
Group Call Idents can be stored in memory in the same way 
as a standard SelCall Ident.
Receiving Group Calls
Receiving a Group Call is identical to receiving a normal 
SelCall except that the alarm sound is a LOW tone beep 
instead of the normal HIGH tone beep. The Callers’ Ident or 
ALPHA Name appears on the display in the usual way.
INSTALLATION
The TX3345 main unit is supplied with a slim, U-shaped 
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, etc.) using the mounting 
slots provided in the cradle. The TX3345 contains a built-in 
speaker, and should be installed in a convenient location in 
the vehicle’s cabin as the radio’s loud speaker. Alternatively 
it can be installed in a less audible location and an 
extension speaker used instead.
The LCD Controller Microphone comes complete with 
a mounting clip. Its small size and light weight design 
allows it to be mounted in almost any convenient position 
accessible to the driver. 
When installing the radio, avoid mounting it close to 
heaters or air conditioners. Screw the LCD Controller 
Microphone’s clip to a firm surface. Fit the TX3345 into the 
cradle and tighten the gimbal knobs. Place the LCD Control-
ler Microphone in its mounting clip. Finally, plug the LCD 
Controller Microphone into the front panel of the TX3345 
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 result 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, try fitting a suppression kit in which case 
we recommend you consult an auto electrician for advice 
specific to your installation.
Higher frequency electrical interference caused by electric 
motors can be suppressed directly at the motor terminals.
Fitting the LCD controller microphone
Slide microphone
into the mounting clip
MC524
T X 3 3 4 5
I N S T R U C T I O N M A N UA L
PA G E 1 9
46397-2_TX3345_InsMan.indd 19
11/09/13 12:04 PM
