Removing the Microphone
1. Squeeze the rubber strain relief near the front panel to
disengage the slot, and slide the strain relief back along
the microphone cord.
2. Squeeze the plastic tab on the microphone plug towards
the plug to unlock it while gently pulling the plug
has not released correctly and should be squeezed again.
DC POWER CONNECTION
installations only (i.e. where the negative terminal of the
battery is connected to the chassis or frame of the vehicle).
There are two recommended methods of installation.
Radio remains ON when
the ignition switch is OFF
Connect the radio’s negative (black) lead to the vehicle’s
chassis, or if preferred, directly to the battery’s negative
terminal. The radio’s positive (red) lead should be connected
via the 2 Amp fuse to the battery’s positive terminal.
Alternatively, the positive lead could be connected into
the fuse box at a point that has +13.8 Volts continuously
available (on the battery side of the ignition switch) via the
2 Amp fuse.
Radio turns ON and OFF
with the ignition switch
Connect the radio’s negative (black) lead to the vehicle’s
chassis, or if preferred, directly to the battery’s
negative terminal.
The radio’s positive (red) lead should connect to an
accessory point in the vehicle’s fuse box via the 2 Amp fuse.
Radio turns ON and OFF with Ignition Switch
To TX3220
Car Battery
Fuse
Chassis
RED
BLACK
Radio remains ON when Ignition Switch is OFF
To TX3220
Car Battery
Fuse
Chassis
RED
BLACK
+ve
Acc
Ign
+ve
Acc
Ign
This point should supply +13.8 Volts only when the ignition
2 Amp fuse.
HIGH VOLTAGE WARNING
The TX3220 has a built-in, high voltage detection system to
warn you if an overvoltage situation occurs.
channel display will flash ‘hi dc’ for 5 seconds when the
unit is first turned on, or at the time the voltage exceeds
will flash and the transmitter will select low output power.
TX3220 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 to source of the problem, you will need to switch
The power source must not exceed 30 Volts.
ANTENNA CONNECTION
GME supply a wide range of mobile and base station
antennas designed specifically for UHF CB communications.
The antennas are fitted with a PL259 coaxial plug suitable
for connection to the antenna socket on the rear panel of
the radio.
Extension Speaker
UHF Aerial
Antenna Socket
Coax Cable
Fuse
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