4 RECEIVE AND TRANSMIT

DAPF (Audio Peak Filter) operation

APF/TPF

[DIGI-SEL]

The APF changes the audio frequency response by boosting a particular frequency to enhance a desired 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. 12-16).

The audio filter shape is also selectable from “SOFT” and “SHARP” in Others set mode (p. 12-16).

qDuring CW mode, push APF/TPF to turn the audio peak filter ON and OFF.

APF ” appears in the display and [APF/TPF] indicator above this switch lights green.

wPush and hold APF/TPF for 1 sec. several times to select the desired audio filter width.

WIDE, MID and NAR filters, or, 320, 160 and 80 Hz fil- ters are available depending on APF type setting in level set mode.

eIf “APF” is selected for “DIGI-SEL VR Operation,” rotate [DIGI-SEL] control to suit your preference.

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