Base Stationinstallation; Antenna Connection; Ground Connection; Dcpowersupplyconnection - Kenwood TRC-80 Instruction Manual

BASESTATION INSTALLATION
ANTENNA CONNECTION
The type of the antenna system, consisting of the
antenna, ground, and feed line, will greatly affectthe
successful performanceof the radiotelephone. Use a
properly adjusted 50 Q antenna of good quality to let
your radiotelephoneperform at its best. Use a
good-quality 50 Q coaxial cable and a first-quality
connector for the connection. Match the impedanceof
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'sprotectioncircuit will activate
if the SWR is greater than 2.5:1, do not rely on
protectionto compensate for a poorly functioning
antenna system. High SWR will cause the transmit
output to drop, and may lead to radio frequency
interferenceto consumer products such as stereo
receivers and televisions. You may even interferewith
your own radiotelephone. Reportsthat your signal is
garbled or distorted, especiallyat peak modttlation,may
indicate that your antenna system is not efficiently
radiating the radiotelephone'spower. If you feel a tingle
from the radiotelephone'scabinet 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 firstconnecting anantenna o rother m atched
load may damage the radiotelephone. Always connect the
antenna to the radiotelephone before transmitting.
. Use a lightning a"estor to prevent fire, electricshock, or damage
to the radiotelephone.
GROUND CONNECTION
Atthe minimum,a good DCground is requiredto
prevent such dangers as electricshock. For superior
communicationsresults, a good RF ground is required,
against whichthe antenna system can operate. Bothof
these conditionscan be met by providinga good earth
ground foryour station. Buryone or more ground rods,
or a large copper plate under the ground, and connect
this to the radiotelephoneGNDterminal. Use heavy
gauge wireor a copper strap, cut as short as possible,
forthis connection. Allconnections must be clean and
tight.
To antenna
-
Earth ground
TRC-80
2
DCPOWERSUPPLYCONNECTION
Inorder to use this radiotelephone,you willneed a
separate 13.6 V DCpower supplythat must be
purchased separately. DONOTdirectlyconnect the
radiotelephoneto an ACoutlet! Use the supplied DC
power cable to connect the radiotelephoneto 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 theDCpower s upply totheradiotelephone, be
sureto switchtheradiotelephone a ndtheDCpowersupplyOFF.
. DonotplugtheDCpowersupplyintoanAC outletuntilyou
makeall connections.
Firstconnect the DCpower cable to the regulated DC
powersupplyandcheck
that polaritiesare 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
Ifthe 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.
CAUTION: Replace blown
fuses only after investigating and
correcting the cause of the failed fuse. Always
replacea blown
fuse by a new fuse with the specified ratings.
Fuses
Power Supply
To AC outlet
.FuseLocation
FuseCurrentRating
4A
TRC-BO
(for KAT-1/ MAT-100
Antenna Tuner)
Supplied
25A
Accessory Cable