Icom IC-471H Instruction Manual page 11

SECTION 5 OPERATING INSTRUCTIONS
5-1 HOW TO TUNE
The following instructions are for tuning in any mode.
Please read carefully and understand fully before turning
ON your unit. Proper tuning is necessary for optimum
operation.
5-1-1 PRESET
When the power switch is turned ON, the frequency display
shows frequency, mode and duplex mode (if stored) stored
in the VFO A, letters "МЕО A" and "01" representing
memory channel 1, and the set initiates with VFO A and
displayed mode, even if the previous operating mode was
different. In addition, the RIT and SCAN are turned
OFF.
FOR EXAMPLE:
5-1-2 FREQUENCY DISPLAYED ON EACH MODE
By selecting the various modes, the displayed frequency
will be changed as follows.
On the "ЕМ" mode 435.000.0
On the "USB" mode 434.998.5
On the "LSB" mode 435.001.5
On the "СМ" mode 434.999.3
The displayed frequency shows the carrier frequency.
To avoid the trouble of recalibrating the dial when you
change the operating mode, the displayed frequency is set
to shift to the carrier frequency of each mode automati-
cally. For the differences of frequency shifts of the various
modes, refer to the following figure.
The differences of the frequency
of the various modes
M —ÀM——— и
700Hz 1.5KHz
1.5KHz
When pushing one of the MHz UP/DOWN switches to
change the operating frequency, 100KHz and lower digits
of the frequency display will remain as it had in the pre-
vious display.
FOR EXAMPLE:
When the frequency display shows ''432.471.5"', and if you
push the UP switch to 433MHz range, the frequency display
will show ''433.471.5'' representing 433.4715MHz.
Pushing the
UP switch
5-1-3 TUNING CONTROL
Rotating the TUNING CONTROL clockwise increases the
frequency, while turning counterclockwise decreases the
frequency in 10Hz steps in the USB, LSB, and CW modes,
and in 5KHz steps in the FM mode.
If the 10Hz steps tuning rate is selected, rapid rotation of
the tuning control knob will cause the 100Hz step rate to
be automatically selected.
When the TUNING RATE switch is pushed in, the 1KHz
steps tuning rate is selected in any mode. At this time, the
100Hz digit of the frequency display is cleared to "'O"'.
When you reach 440.000.0 (U.S.A. version: 450.000.0),
turning the tuning control clockwise will bring the operat-
ing frequency to 430.000.0, the lowest edge, and you can
continue increasing the frequency from there by continuing
to rotate the control clockwise. The VFO endless system
functions in the same way when decreasing the frequency
from 430.000.0, and will prevent you from inadvertently
operating out of the amateur radio band.
FOR EXAMPLE:
Turning the
TUNING CONTROL
clockwise.