Operation Manual
D AH-4 operation
115
10
ANTENNA TUNER OPERATION
Tuning is required for each frequency. Be sure to re-
tune the antenna before transmitting when you
change the frequency—even slightly.
q Set the desired frequency in an HF band.
•The AH-4 will not operate on frequencies outside of
ham bands.
w Push and hold [TUNER/CALL] for 1 sec.
•“ ” indicator and “CW” appears while tuning.
e “”indicator stays ON when tuning is com-
plete.
•When the connected wire cannot be tuned, “”in-
dicator blinks, and the AH-4 is bypassed and the an-
tenna wire is connected to the antenna connector on
the transceiver directly.
r To bypass the AH-4 manually, push [TUNER/
CALL].
•PTT tune function
The AH-4 is always tuned when the PTT is pushed
after the frequency is changed (more than 1%). This
function removes the “push and hold [TUNER/CALL]”
operation and activates first transmission on the new
frequency. This function is turned ON in the miscella-
neous (others) set mode (p. 131).
CONVENIENT
■ Optional AH-4
AUTOMATIC ANTENNA TUNER
operation
The AH-4 matches the IC-7000 to a long wire antenna
more than 7 m/23 ft long (3.5 MHz and above).
•See p. 20 for connection.
•See the AH-4 instruction manual for AH-4 installation and
antenna connection details.
NEVER operate the AH-4 without an antenna wire.
The tuner and transceiver will be damaged.
NEVER operate the AH-4 when it is ungrounded.
Transmitting before tuning may damage the trans-
ceiver. Note that the AH-4 cannot tune when using a
1
⁄2 λ long wire or on a multiple of that frequency.
[TUNER/CALL]
RDANGER!: HIGH VOLTAGE!
NEVER touch the antenna element while tuning or
transmitting.
AH-4 setting example:
For mobile operation
For outdoor operation
Long wire
Optional AH-2b
antenna element
Menu group selection
Push [MENU/GRP] for 1 sec.
Selection from:
MM
,
SS
or
GG
(Graphic)
Menu selection (Example: M)
Push [MENU/GRP] momentarily.
Selection from:
SS
--
11
,
SS
--
22
or
SS
--
33
Either
Y or Z
Either
Y or Z