Icom AH-740 Instruction Manual
INSTRUCTION MANUAL
HF AUTOMATIC TUNING ANTENNA
AH-740
* The “stand” in the photo is not
supplied with the tuning antenna.
FOREWORD
EXPLICIT DEFINITIONS
Thank you for purchasing the AH-740 h f a u t o m a t i c t u n i n g
a n t e n n a .
The AH-740 is designed, primarily for use with Icom HF
transceivers.
Refer to your HF transceiver instruction manual for operation.
If you have any questions, contact your dealer.
IMPORTANT
READ ALL INSTRUCTIONS carefully and completely
before using the AH-740.
SAVE THIS INSTRUCTION MANUAL. This instruc-
tion manual contains important safety and installation instructions.
i
WORD DEFINITION
R DANGER!
R WARNING!
CAUTION Equipment damage may occur.
NOTE
Personal death, serious injury or an explosion may occur.
Personal injury, fire hazard or electric
shock may occur.
Recommended for optimum use. No risk
of personal injury, fire or electric shock.
FEATURES
Compact and light weight ❍
Fast tuning speed ❍
Covers 2.2 to 30 MHz range when using ❍
with the optional NVIS kit
Icom, Icom Inc. and the Icom logo are registered trademarks of Icom
Incorporated (Japan) in Japan, the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries.
PRECAUTIONS
TABLE OF CONTENTS
RDANGER HIGH VOLTAGE! NEVER touch the antenna
terminal, ground terminal, antenna while transmitting.
RWARNING! NEVER transmit while installing the anten-
na. This may cause an electric shock.
NEVER use without a ground connection.
USE the ground terminal for ground connection.
DO NOT operate your HF transceiver without running the
vehicle’s engine. When the transceiver’s power is ON and the
vehicle’s engine is OFF, the vehicle’s battery will soon become exhausted.
DO NOT use the AH-740 in areas where the temperature is
below –40°C (–40ºF) or above +70°C (+158ºF).
RWARNING! At least two people are needed to unpack
the optional AH-5NV
element is tightly coiled and can spring open with a lot of
force. This could cause a serious injury or other damage.
n v i s k i t . Work in an open space as the
FOREWORD …………………………………………………………… i
IMPORTANT …………………………………………………………… i
EXPLICIT DEFINITIONS …………………………………………… i
FEATURES …………………………………………………………… i
PRECAUTIONS ……………………………………………………… ii
TABLE OF CONTENTS ……………………………………………… ii
SUPPLIED ACCESSORIES ………………………………………… iii
MISCELLANEOUS ITEMS …………………………………………… iii
1 SYSTEM INSTALLATION .........................................................1
Ground connection ■ …………………………………………… 1
Cabling ■ ………………………………………………………… 1
Coaxial cable ■ ………………………………………………… 1
About mounting base ■ ………………………………………… 1
2 INSTALLATIONS ......................................................................2
Typical installation scenarios ■ ……………………………… 2
Precautions when the optional AH-5NV is installed on a D
vehicle………………………………………………………… 3
Installation outline ■ …………………………………………… 4
Mounting ■ ……………………………………………………… 4
Cable connections ■ …………………………………………… 5
Optional AH-5NV ■ ……………………………………………… 6
3 SPECIFICATIONS AND OPTIONS ...........................................7
Specifications ■ ………………………………………………… 7
Control connector information D …………………………… 7
Options ■ ………………………………………………………… 7
ii
SUPPLIED ACCESSORIES
qw
e
rty
!0
ui
o!1
The following accessories are supplied with the antenna.
q Control cable (approximately 6 m; 19.7 ft) ...................... 1
w Coaxial cable (approximately 6 m; 19.7 ft) ...................... 1
e Whip antenna ................................................................. 1
r Antenna spring ............................................................... 1
t Bolts (M8) ....................................................................... 2
y Nuts (M8) ........................................................................ 2
u Spring washers (M8) ....................................................... 2
i Flat washers (M8) .......................................................... 4
o Spring washer (M16) ..................................................... 1
!0 Nut (M16) ...................................................................... 1
!1 Flat washer (M16) ......................................................... 1
MISCELLANEOUS ITEMS
The following items are additionally required for installation,
but is not supplied with the AH-740.
Purchase the item locally.
• Mounting base
• Rubber vulcanizing tape
• Electrical tape
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