Table of Contents
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MISCELLANEOUS ITEMS
The following parts are additionally required for instal-
lation, but are not supplied with the AT-141.
Purchase these parts locally.
q AWG 14 × 4 conductor shielded cable
• Icom offers an optional OPC-1465 control cable.
Length: 10 m
w 50 Ω coaxial cable
e Two PL-259 connectors
FEATURES
Weather resistant
The AT-141 is housed in a durable, completely
weather resistant ASA case, with a rubber gasket. The
antenna tuner can be conveniently installed near the
antenna element.
Matches all bands
The AT-141 matches all frequencies on the HF marine
band. For example, the tuner matches a 7 m long-wire
antenna across 1.6-30 MHz.
Full automatic tuning
Just push the [TUNE] key on the transceiver, and the
AT-141 immediately tunes for a minimum SWR on any
frequency in the HF marine band.
HF operation on any size ship
The AT-141 allows HF operation where antenna ele-
ment length is restricted due to space.
Simple installation
Installation is simple. Just connect the control and an-
tenna cables. You never need to open the cover.
45 memories for shorter tuning time
To decrease the tune-up time, the AT-141 automati-
cally stores the matching conditions for up to 45 fre-
quencies. Retuning a memorized frequency takes ap-
proximately 1 second.
Super capacitor for memory backup
Even if the AT-141 is not used for approximately 1
week, the built-in super capacitor backs up the con-
tents of the 45 memories.
Low power tune up
The AT-141 emits low output power during tuning. This
feature reduces the possibility of causing interference
to other stations.
Tuner Through function
The Tuner Through function is built into the AT-141.
This function helps improve receiver gain, depending
on the antenna element length used, and the operat-
ing frequency.
TABLE OF CONTENTS
IMPORTANT ................................................... ii
EXPLICIT DEFINITIONS ................................. ii
PRECAUTIONS ............................................. ii
SUPPLIED ACCESSORIES .............................. ii
MISCELLANEOUS ITEMS.............................. iii
FEATURES ................................................ iii
TABLE OF CONTENTS ................................. iii
1 SYSTEM INSTALLATION .............................. 1
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2 ANTENNA SYSTEM .................................... 3
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3 INSTALLATIONS ....................................... 5
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4 CONTROL CABLE SIGNALS ........................ 8
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6 INSTALLATION EXAMPLE ........................ 10
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