Notch Function; Auto Tune FunctOn - Icom IC-7600 Instruction Manual

4
RECEIVE AND TRANSMIT

■ Notch function

Ths transcever has auto and manual notch func-
tons.
The auto notch functon uses DSP to automatcally
attenuate beat tones, tunng sgnals, etc., even f they
are movng. The manual notch can be set to attenu-
ate a frequency va the [NOTCH] control.
The auto notch can be used n the SSB, AM and FM
mode.
The manual notch can be used n the SSB, CW,
RTTY, PSK and AM modes.
➥ Push [NOTCH] to toggle the notch functon
between auto, manual and OFF n the SSB and
AM modes.
• Ether auto or manual notch functon can be deact-
vated n the Others set mode. (p. 132)
➥ Push [NOTCH] to turn the manual notch functon
ON or OFF n the CW, RTTY, PSK modes.
➥ Push [NOTCH] to turn the auto notch functon ON
or OFF n FM mode.
the
• The ndcator on ths swtch lghts green when the auto
or manual notch functon s ON.
• When the manual notch functon s ON, push and hold
[NOTCH] for 1 sec. to select the notch flter wdth for
manual notch from wde, mddle and narrow.
• Set to attenuate a frequency for manual notch va the
[NOTCH] control.
• " " appears when auto notch s n use.
• " " appears when manual notch s n use.
Whle tunng the manual notch, nose may be
heard. Ths comes from the DSP unt and does not
ndcate an equpment malfuncton.
■ Auto tune function
<MODE> CW/AM
The automatc tunng functon tunes the dsplayed fre-
quency automatcally when an off-frequency sgnal s
receved wthn the range ±500 Hz (CW) or ±5 kHz (AM).
Ths functon s actve whle n CW or AM s selected.
➥ Push [AUTO TUNE] to toggle the auto tune func-
ton ON or OFF.
• " " blnks when auto tune functon s act-
vated.
• After 2 sec. has passed, the auto tune functon stops
tunng automatcally even t's stll off-frequency.
IMPORTANT!
When recevng a weak sgnal, or recevng a sg-
nal wth nterference, the automatc tunng functon
may tune the recever to an undesred sgnal.
NOTE: The automatc tunng functon does not
actve on the sub band.
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