Base Station Installation; Antenna Connection; Ground Connection; Dc Power Supply Connection - Kenwood TRC-80 Instruction Manual

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BASE STATION INSTALLATION
ANTENNA CONNECTION
The type of the antenna system, consisting of the
antenna, ground, and feed line, will greatly affect the
successful performance of the radiotelephone. Use a
properly adjusted 50 Q antenna of good quality to let
your radiotelephone perform at its best. Use a
good-quality 50 Q coaxial cable and a first-quality
connector for the connection.
Match the impedance of
the coaxial cable and antenna so that the SWR is 1.5:1
or less. All connections must be clean and tight.
While the radiotelephone's protection circuit will activate
if the SWR is greater than 2.5:1, do not rely on
protection to compensate for a poorly functioning
antenna system. High SWR will cause the transmit
output to drop, and may lead to radio frequency
interference to consumer products such as stereo
receivers and televisions. You may even interfere with
your own radiotelephone. Reports that your signal is
garbled or distorted, especially at peak modulation, may
indicate that your antenna system is not efficiently
radiating the radiotelephone's power.
If you feel a tingle
from the radiotelephone's cabinet or the microphone's
metal fittings when you modulate, you can be certain
that, at the least, your coax connector is loose at the
rear of the radio and, at the worst, your antenna system
is not efficiently radiating power.
CAUTION:
@ = Transmitting without first connecting an antenna or other matched
load may damage the radiotelephone. Always connect the
antenna to the radiotelephone before transmitting.
@
Usea
lightning arrestor to prevent fire, electric shock, or damage
to the radiotelephone.
GROUND CONNECTION
At the minimum, a good DC ground is required to
prevent such dangers as electric shock. For superior
communications results, a good RF ground is required,
against which the antenna system can operate. Both of
these conditions can be met by providing a good earth
groundior your station. Bury one or more ground rods,
or a large copper plate under the ground, and connect
this to the radiotelephone GND terminal. Use heavy
gauge wire or a copper strap, cut as short as possible,
for this connection. All connections must be clean and
tight.
To antenna
DC POWER SUPPLY CONNECTION
In order to use this radiotelephone, you will need a
separate 13.6 V DC power supply that must be
purchased separately. DO NOT directly connect the
radiotelephone to an AC outlet! Use the supplied DC
power cable to connect the radiotelephone to a
regulated power supply. Do not substitute a cable with
smaller gauge wires. The current capacity of your
power supply must be 20.5 A or more.
CAUTION:
@
Before connecting the DC power supply to the radiotelephone, be
sure to switch the radiotelephone and the DC power supply OFF.
@
Donot plug the DC power supply into an AC outiet until you
make all connections.
First connect the DC power cable to the regulated DC
power supply and check that polarities are correct
(Red: positive, Black: negative). Then connect the
connectorized end of the DC power cable to the
DC 13.6 V power connector on the radiotelephone Rear
Panel. Press the DC power cable connector firmly into
the connector on the radiotelephone until the locking tab
clicks.
@ Replacing Fuses
If the fuse blows, determine the cause then correct
the problem. After the problem is resolved, only then
replace the fuse. If newly installed fuses continue to
blow, disconnect the power plug and contact your
Dealer for assistance.
4A
(for KAT-1/ MAT-100
Antenna Tuner)
TRC-80
Supplied
Accessory Cable
CAUTION:
Replace blown fuses only after investigating and
correcting the cause of the failed fuse. Always replace a blown
fuse by a new fuse with the specified ratings.
L=)
Power Supply
To AC outlet

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