Mobile Antenna - Kenwood TS-670 Instruction Manual

Use short heavy leads.
Fuse should be as close to the battery
terminal as possible.
12 V Battery
Power Cord Connection
@ 4-16 MOBILE ANTENNA
Antenna
Base
Bumper mount antenna
Roof side antenna
Trunk lid antenna
24
TS-670
As short as possible.
Turn POWER switch OFF before connecting/ disconnecting
the power cord.
Connect the TS-670 power cable to the battery terminals,
with consideration
to current
requirements and
noise
prevention.
The maximum current drawn by the TS-670
reaches about 4 amps when transmitting. Therefore, the
cable should be made
as short
as possible, using the
specified fuse. Also, determine that the power system of
the car (including the battery and generator or alternator)
will handle the increased load of the TS-670.
(1) Antenna Installation
Use a sturdy mount for the mobile antenna since HF anten-
nas are larger (and have more wind load) and are heavier
than VHF antennas. A bumper mount is recommended for
general use. The ground side of the mount must be well
grounded to the car body, since the body itself functions as
the ground plane for the mobile antenna.
NOTES:
1. Some cars have plastic bumpers. For such cars,
ground the antenna mount to the body.
2. When tuning a newly iunstalled antenna, use the
following procedure:
¢ Turn the CAR control fully counter-clockwise for
minimum transmit power.
* With the transceiver in transmit mode, raise
transmit power output slowly by rotating the CAR
control clockwise. The antenna should be ad-
justed with minimum power.
¢ Transmitting with full power is recommended only
after the antenna has been adjusted for a VSWR
below 1.5:1
3. Antenna installation is critical for successful mobile
operation. For further information refer to THE
RADIO AMATEUR'S HANDBOOK, RADIO HAND-
BOOK, or other texts.
(2) Coaxial Cable Connection
When the antenna is mounted on the vehicles bumper, the
coaxial cable from the antenna can be routed through a
drain hole in the trunk. When the antenna is roof mounted
pass the cable between the body and door. Leave a
driploop at the lowest point in the cable before entry into
the vehicle to prevent water from entering the car.