Installation Example - Icom AT-140 Instruction Manual

D Antenna tuner location versus the strength of radiation from the same length of the
antenna element
When the antenna tuner is installed on the deck with the same element length connected.
Good — Horizontal
The antenna tuner is installed at a
higher position and the element is in-
stalled horizontally.
D Style of the antenna element connection versus the strength of the radiation from the
element
The vertical element should be connected at the end of the horizontal element.
Good — Long
The distance is longer between the
connection of the vertical element and
the end of the horizontal element.
D
Thickness of the Antenna element versus the strength of radiation from the element
The thickness of the antenna element does not change communication quality much, but it should be as thick as
possible for better radiation from the antenna element.
Good — Regular size
Better — Inverted-L
The element is bent in the middle as an
Inverted-L antenna.
Better — Short
The distance between the vertical element
and the end of the horizontal element is
shorter, compared with the one to the left.
Better — Thick
RDANGER: HIGH VOLTAGE!
NEVER
transmitting.

INSTALLATION EXAMPLE

Best — Vertical
If the length of the antenna element is
limited because of installation space, a
longer vertical element will give a lon-
ger communication distance.
Best — Direct
The vertical element is connected di-
rectly to the end of the horizontal ele-
ment.
Best — Thicker
touch the antenna element while tuning or
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