Notch Function; Autotune Function - Icom IC-7600 Instruction Manual

4
RECEIVE AND TRANSMIT

Notch function

This transceiver has auto and manual notch func-
tions.
The auto notch function uses DSP to automatically
attenuate up to 3 beat tones, tuning signals, etc.,
even if they are moving. The manual notch can be set
to attenuate a frequency via the [NOTCH] control.
The auto notch can be used in SSB, AM and FM
mode.
The manual notch can be used in SSB, CW, RTTY,
PSK and AM modes.
Push [NOTCH] to toggle the notch function
between auto, manual and OFF in SSB and AM
modes.
Push [NOTCH] to turn the manual notch function
ON and OFF in CW, RTTY, PSK modes.
Push [NOTCH] to turn the auto notch function ON
and OFF in FM mode.
• The indicator on this switch lights green.
• When the manual notch function is ON, push and hold
[NOTCH] for 1 sec. to select the notch filter width for
manual notch from wide, middle and narrow.
• Set to attenuate a frequency for manual notch via the
[NOTCH] control.
• " " appears when auto notch is in use.
• " " appears when manual notch is in use.
While tuning the manual notch, noise may be
heard. This comes from the DSP unit and does not
indicate an equipment malfunction.

Autotune function

<MODE> CW/AM
The Automatic tuning function tunes the displayed fre-
quency (max. CW: 500 Hz, AM: ±5 kHz) automatically
when an off-frequency signal is received. This func-
tion is active while in CW or AM mode is selected.
Push [AUTOTUNE] to toggle the autotune function
ON or OFF.
• " " blinks when autotune function is acti-
vated.
• After 30 sec. has passed, the autotune function stops
tuning automatically even it's still off-frequency.
83
• Auto notch indication
• Manual notch indication
Auto notch OFF
Desired
signal (AF)
Unwanted tone
frequency
Appears
[NOTCH]
NOTCH
control
Appears
Appears
Auto notch ON
Desired
signal (AF)
Particular frequency
is attenuated
AUTO
TUNE