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TRC-70
MAT-100 (AUTOMATIC ANTENNA TUNER) —
Installation Instructions
¢
Antenna
The type of antenna that is used will greatly affect
the performance
of the equipment.
The antenna
should be erected as high as possible.
Keep the antenna as far from any object which may
affect it's performance, such as metalic masts or
other guy wires , as possible.
Insulator should be able to withstand leakage even
when wet.
The base of the antenna is HIGH VOLTAGE.
It should be connected to the lead-in insulator.
Do not touch the base of the antenna.
Certain lengths of antenna element are difficult for
the system to tune.
Element length to be avoided
= 300/operating frequency (MHz) x 1/2 x integer
SHIPSTATION
136
«
Ground
The MAT-100 must be connected to a good electri-
cal ground. Without a good ground an SSB radio-
telephone cannot work satisfactorily. It is of the ut-
most
importance
to ground
the antenna
coupler
unit.
If boat provides a good ground , use less than 2 m
of heavy guage wire to connect.
To extend the
length use a copper strap.
When
good ground is not provided use a copper
strap to run from the outside of the boat to the
ground terminal of the antenna coupler.
SHIPS WITH
A NON-CONDUCTING
STRUCTURE
Grounding Screen
.
(To be imbedded
at construction)
=
~
Soh
af
—
0s
Copper straps to each
metallic structures
TRC-70
MAT-100 (AUTOMATIC ANTENNA TUNER)
¢« Antenna coupler
INSTALLATION
The MAT-100
is protected by weather
proof con-
struction which permits the flexibility of interior or
exterior instruction.
Before installation note the following precaution.
1.
Good ground connection
2.
Avoid water spray
3.
The base of the antenna is HIGH VOLTAGE.
4.
Use caution when tightening the wing nut on the
GND and antenna terminal. Over tightening may
cause twisting of the terminals inside the coupler.
Three
kinds
of installation
are available
for any
type of ship.
1 .Installation by U-clamp
Mounting bracket
Flat washer
Nut
Spring washer
yw
2. Installation by Self tapping
Screws
|
ae
tapping screw
SS
Flat washer
Si
3. Installation by Hex Head Screws
d>
Nut
.
-
Spring washer
Cb)
Flat washer
WS |
¢6.5~¢7
Fiat washer
SE
=
Hex. bolt
Two drain holes are provided.
If the coupler is installed horizontally remove screw
A, and if installed vertically remove screw B.
Remove
screw A
Remove
screw
B
TRC
138
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