Icom IC-746PRO Instruction Manual page 10

Hf/vhf all mode transceiver
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QUICK REFERENCE GUIDE
c. Notch: There are two notch systems on your IC-
746PRO.
• Automatic: The automatic notch will track up to three
heterodynes. This is great for eliminating hetero-
dynes on 80 and 160 meters, and those annoying
tune up signals across the band. Once selected an
icon will appear "A NOTCH" on the display.
Hint!
The Automatic Notch will not operated in the SSB
data, CW or RTTY modes.
• Manual: The Manual notch provides 70 dB of atten-
uation to pin point an interfering signal. The 12 o'-
clock position is on the operating frequency, turning
the Notch knob clockwise moves the notch up the
band and counter clockwise will move the notch
down the band. Once selected an icon will appear
"NOTCH" on the display.
Low freuency
d. Filters: Your IC-746PRO has an incredible IF DSP
based filter network with over 100 settings.
• Dial in your filters: By pushing [FILTER] for 1 sec.,
you enter the filter set mode. This is where you are
able set the three filter presets. Across the bottom of
the display you will see the "BW" icon. The switch di-
rectly below, along with the tuning dial, will be used
to select the changes you will make.
A G C D U P C M P T B W S C P
The selected filter width is indicated
for approx. 1 sec. when [FILTER] is
pushed.
VII
NR
NOTCH
High frequency
[FILTER]
Filter selection
[A/NOTCH] [NOTCH]
A G C D U P C M P T B W S C P
NOTE: Your IC-746PRO is equipped with multiple
AGC circuits. This allows the DSP to filter out inter-
fering signals and QRM, while also taking this in-
terference out of the AGC. Bottom line, this will ei-
ther eliminate or greatly reduce the pumping of the
AGC from the interfering signal.
• Filter set mode indication
B W
Shows the selected filter and passband width.
• Indication while setting
B W
Reverses
While pushing [F1 BW], rotate the tuning dial to set
passband width.
Notch function indicators
Appears

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