D Apf (Audio Peak Filter) Operation - Icom ic-7700 Instruction Manual

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RECEIVE AND TRANSMIT

D APF (Audio Peak Filter) operation

The APF changes the audio frequency response by
boosting a particular frequency to enhance a desired
APF/TPF
CW signal.
The peak frequency can be adjusted with [DIGI-SEL]
control when "APF" is selected for "DIGI-SEL VR Op-
eration" in Others set mode (p. 12-15).
The APF audio level can be adjusted in the Level set
mode (p. 12-6).
The audio filter shape is also selectable from "SOFT"
[DIGI-SEL]
and "SHARP" in Others set mode (p. 12-16).
q During CW mode, push
audio peak filter ON or OFF.
• "
above this switch lights green.
w Hold down
to select the desired audio filter width.
• WIDE, MID and NAR filters, or, 320, 160 and 80 Hz
filters are available depending on APF type setting in
Other set mode. (p. 12-16)
e If "APF" is selected for "DIGI-SEL VR Operation,"
rotate [DIGI-SEL] control to suit your preference.
4-6
" appears in the display and [APF/TPF] indicator
APF
for 1 second several times
APF/TPF
to turn the
APF/TPF