Connecting An External Antenna Tuner - Icom IC-718 Advanced Manual

3
OPTIONS

Connecting an external antenna tuner

You can connect an optional external antenna tuner�
See page 2-4 and the antenna tuner's manual for details�
DO NOT connect two or more antenna tuners at the
same time� Both tuners will not function correctly�
Example 1: AH-4 automatic antenna tuner
Coaxial cable (from the antenna tuner)
To [ANT]
IC-718
GND
Example 2: AH-730 automatic antenna tuner
Coaxial cable (from the antenna tuner)
To [ANT]
To [TUNER]
GND
IC-718
Example 3: AH-740 automatic tuning antenna
To [ANT]
IC-718
GND
Coaxial cable (from the tuning antenna)
Control cable
To [TUNER]
GND
GND
Control cable
To [TUNER]
Control cable
(OPC-2321)
NOTE: Before connecting the antenna tuner, turn
OFF the transceiver� Otherwise, the transceiver and
the antenna tuner may be damaged�
AH-4
AH-730
AH-740
GND
3-4
AH-2b antenna element
(Optional) or a long wire
A long wire antenna
(length: more than 7 m, 23 ft)