External Antenna Tuner Connections; Optional Installations - Icom IC-746 Instruction Manual

13

OPTIONAL INSTALLATIONS

13-6 External antenna tuner connections

CONNECTING THE AH-4
IC-746
control cable
GND
NOTE: The AH-4 must be connected to [ANT1].
[TUNER]
PTT TUNE FUNCTION
80
supplied cable
ANT 1
GND
AH-4
D OPERATING THE AH-4
Connect the AH-4 to the transceiver as shown
above.
Push [POWER] to turn transceiver power on.
• "EXIT" appears on the display.
• The internal antenna tuner automatically enters the
"through" condition.
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.
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.
Push [TUNER] for 2 sec. to retune the antenna tuner
when you change the operating frequency or band.
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.
long wire antenna