2.mobil operation, 2. mobile operation – Kenwood TS-440S User Manual
Page 53
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The antenna to be used should first be checked with
a dip meter to insure that it is designed for your oper
ating band, then the impedance matching should be
checked with an SWR meter. (Fig. 10-3)
The VSWR should preferably be less than 1.5:1 for
stisfactory operation. For antenna adjustment refer to
the antenna instruction manual.
(4) Antenna matching
In general, mobile antennas have a lower impedance
than the 50-ohm coaxial cable used to feed them,
resulting in a mismatch between the antenna and the
coax. Such trouble can be eliminated by using an an
tenna tuner between the transceiver and the coaxial
cable.
o Matching circuit examples
INPUTS ^
O--- i—
OUTPUT
-------- o
/
-^1
INPUTj_j^
O—*■
OUTPUT
10-2.MOBIL OPERATION
10-2-1. Installation
Route battery and ANTENNA leads away from all high
voltage secondary circuits to prevent ignition noise in
terference.
44