Adjustments; Tuning Dial Brake; Frequency Calibration - Icom IC-746 Instruction Manual

11-1 Tuning dial brake

Loosen
Tighten

11-2 Frequency calibration

[APF/ANF]
[SSB]
[RF/SQL] [AF] [P.AMP/ATT]
Setting the calibration marker
[CAL]
The tension of the tuning dial can be adjusted to suit
your preference.
The brake adjustment screw is located on the right
side of the tuning dial. See figure at left.
Turn the brake adjustment screw clockwise or coun-
terclockwise to obtain a comfortable tension level
while tuning the dial continuously and evenly in one
direction.
A very accurate frequency counter is required to cali-
brate the frequency of the transceiver. However, a
rough check may be performed by receiving radio sta-
[TWIN PBT]
tion WWV, or other standard frequency signals.
v CAUTION:
adjusted and checked at the factory before being
shipped. You should not calibrate frequencies, ex-
cept for special reasons.
Push [SSB] to select USB mode. Make sure the
[TWIN PBT] controls are set to the center position
and the RIT/
[RIT] [
TX] Set the frequency to the standard frequency station
:
minus 1 kHz.
• When receiving WWV (10.000.00 MHz) as a standard
• Other standard frequencies can also be used.
Select [CAL. Marker] in set mode (p. 60) and set to
ON.
Adjust the calibration pot [CAL] on the rear side of
the transceiver for a zero beat with the received
standard signal.
• Zero beat means that two signals are exactly the same
When calibration is complete, set [CAL. Marker] in
set mode to OFF.

ADJUSTMENTS

Your transceiver has been thoroughly
TX function is not activated.
:
frequency, set the operating frequency for 9.999.00 MHz.
frequency, resulting in a single tone being emitted.
11
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