GME GX300W - Manual (Page 9)

GX300 INSTRUCTION MANUAL PAGE 9
ANTENNA INSTALLATION
It is essential to select a good quality, high efficiency,
27 MHz antenna. A poor quality antenna or one not
designed for the specific frequency band you are using
will give very poor performance.
Since the GX300 is capable of being switched between
the 27 MHz marine and the 27 MHz CB bands, it is
important to connect an antenna suitable for the band
you have selected. Because each band is in a different
part of the frequency spectrum it isn’t possible to have a
single antenna that will work well on both bands. You will
therefore need to select a suitable antenna to suit the band
you have selected.
GME have a huge range of suitable 27 MHz CB and
27 MHz marine antennas to suit most installations and
applications. We recommend you contact your local dealer
for advice.
Connect the antenna cable to the rear antenna socket using
a PL259 coaxial connector.
NOTE: The antenna connector is not waterproof.
NOISE SUPPRESSION
27 MHz marine and CB radio can be prone to electrical
and ignition interference. The reason is that electrical noise
is a form of AM transmission similar to that used by your
radio and your radio’s receiver is very sensitive. In most
cases, ignition noise can be greatly reduced or eliminated
by selecting the Noise Limiter (NL) key on the radio. In
some severe cases, additional suppression may need to
be fitted to the ignition system of your vessel or vehicle, in
which case we recommend you consult an auto or marine
electrician for advice specific to your installation.
Higher frequency electrical interference caused by electric
motors and bilge pumps can be suppressed directly at the
motor terminals. Electronic interference caused by other
electronic devices such as fishfinders is best minimized by
keeping the units, including all wiring and cables, separate
from your GX300.
DISCONNECTING THE MICROPHONE
It is recommended that the microphone be left permanently
connected to the GX300, but if it must be disconnected,
proceed as follows:
1. Insert a small screwdriver between the rubber boot
and the lip of the raised area on the front panel.
2. Ease the rubber boot out of the cable entry hole and
slide it along the cable away from the front panel.
3. Identify the plug locking lever, work the screwdriver
blade behind it and move the lever towards the plug
body. At the same time gently pull the plug from the
socket (see diagram below).
If required, replacement microphones are available with
plug and rubber boot already fitted.
Extension Speaker
(optional)
27 MHz
Antenna
Fuse
Black - Red +
GX300
12 Volt
Battery
Cable
Screwdriver
Locking lever
move to left to
release plug
Cable entry hole