Icom IC-718 - Connecting an External Antenna Tuner

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