Installation Example - Icom AT-141 Instruction Manual

Hf automatic antenna tuner

Hide thumbs Also See for AT-141:

Instruction manual (11 pages)

Service manual (20 pages)

Table Of Contents

Table of Contents

The following are antenna tuner and antenna installa-

tion examples for a non-sail boat.

They also explain both transmission and reception

performance, for your reference.

Antenna tuner location versus the strength of radiation from the antenna element

The antenna tuner should be installed outside the vessel as high as possible.

However, the length of the vertical element should also be as long as possible.

Good — High position

This antenna tuner unit position is bet-

ter than others but the length of the ver-

tical element is shorter than the others.

Style of the antenna element

When the horizontal element is longer, or made with multiple wires, the effective height of the antenna is high and

communication distance may be improved.

Good — Vertical

This is a basic style with only the verti-

cal element. This style is not effective

for NVIS* communications.

* Near Vertical Incidence Skywave. This is a radio-wave propagation method that provides usable signals in the range between

groundwave and skywave distances (usually 30 to 400 miles, or 50 to 650 km).