![background image](http://html2.mh-extra.com/html/icom/ic-746/ic-746_instruction-manual_4128831082.webp)
80
13
OPTIONAL INSTALLATIONS
CONNECTING THE AH-4
☞
NOTE: The AH-4 must be connected to [ANT1].
13-6 External antenna tuner connections
supplied cable
control cable
IC-746
AH-4
long wire antenna
GND
GND
ANT 1
[TUNER]
D
OPERATING THE AH-4
➀
Connect the AH-4 to the transceiver as shown
above.
➁
Push [POWER] to turn transceiver power on.
• “EXIT” appears on the display.
• The internal antenna tuner automatically enters the
“through” condition.
➂
Push [TUNER] for 2 sec.
• The transceiver automatically selects CW mode and out-
put power of 10 W; then, automatically tunes the con-
nected antenna.
• “TUNE” flashes during tuning.
➃
When tuning is complete, the previously selected
operating mode is automatically selected.
• If tuning is not successful, “TUNE” disappears and the
AH-4 is set to the “through” condition.
➄
Push [TUNER] for 2 sec. to retune the antenna tuner
when you change the operating frequency or band.
■
PTT TUNE FUNCTION
When [TUNER] is ON and the PTT tune function is ON
in set mode, the transceive automatically tunes HF
bands when transmitting for the first time.
See p. 63 for setting the PTT tune function ON and
OFF.
Summary of Contents for IC-746
Page 90: ......