Icom IC-7600 Instruction Manual - Page 90

■ Notch function, NOTCH], <MODE> CW/AM, AUTO TUNE]

Page 90 highlights

4 RECEIVE AND TRANSMIT ■ Notch function This transceiver has auto and manual notch functions. The auto notch function uses DSP to automatically attenuate 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. ➥ P ush [NOTCH] to toggle the notch function between auto, manual and OFF in SSB and AM modes. • Either auto or manual notch function can be deactivated in others set mode. (p. 132) ➥ 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 auto or manual notch function is ON. • 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. • Auto notch indication NOTCH [NOTCH] control Appears • Manual notch indication Appears Auto notch OFF Auto notch ON Desired signal (AF) Desired signal (AF) ■ Auto tune function CW/AM The automatic tuning function tunes the displayed frequency automatically when an off-frequency signal is received within the range ±500 Hz (CW) or ±5 kHz (AM). This function is active while in CW or AM mode is selected. Unwanted tone frequency Particular frequency is attenuated ➥ Push [AUTO TUNE] to toggle the auto tune func- tion ON or OFF. • " " blinks when auto tune function is acti- vated. • After 2 sec. has passed, the auto tune function stops tuning automatically even it's still off-frequency. Appears AUTO TUNE IMPORTANT! When receiving a weak signal, or receiving a signal with interference, the automatic tuning function may tune the receiver to an undesired signal. NOTE: The automatic tuning function does not active on the sub band. 83

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Notch function
Th±s transce±ver has auto and manual notch func-
t±ons.
The auto notch funct±on uses DSP to automat±cally
attenuate beat tones, tun±ng s±gnals, etc., even ±f they
are mov±ng. The manual notch can be set to attenu-
ate a frequency v±a the
[NOTCH]
control.
The auto notch can be used ±n SSB, AM and FM
mode.
The manual notch can be used ±n SSB, CW, RTTY,
PSK and AM modes.
Push
[NOTCH]
to toggle the notch funct±on
between auto, manual and OFF ±n SSB and AM
modes.
E±ther auto or manual notch funct±on can be deact±-
vated ±n others set mode. (p. 132)
Push
[NOTCH]
to turn the manual notch funct±on
ON and OFF ±n CW, RTTY, PSK modes.
Push
[NOTCH]
to turn the auto notch funct±on ON
and OFF ±n FM mode.
The ±nd±cator on th±s sw±tch l±ghts green when the auto
or manual notch funct±on ±s ON.
When the manual notch funct±on ±s ON, push and hold
[NOTCH]
for 1 sec. to select the notch f±lter w±dth for
manual notch from w±de, m±ddle and narrow.
Set to attenuate a frequency for manual notch v±a the
[NOTCH]
control.
• “
” appears when auto notch ±s ±n use.
• “
” appears when manual notch ±s ±n use.
Wh±le tun±ng the manual notch, no±se may be
heard. Th±s comes from the DSP un±t and does not
±nd±cate an equ±pment malfunct±on.
Auto tune function
<MODE> CW/AM
The automat±c tun±ng funct±on tunes the d±splayed fre-
quency automat±cally when an off-frequency s±gnal ±s
rece±ved w±th±n the range ²500 Hz (CW) or ²5 kHz (AM).
Th±s funct±on ±s act±ve wh±le ±n CW or AM mode ±s selected.
Push
[AUTO TUNE]
to toggle the auto tune func-
t±on ON or OFF.
” bl±nks when auto tune funct±on ±s act±-
vated.
After 2 sec. has passed, the auto tune funct±on stops
tun±ng automat±cally even ±t’s st±ll off-frequency.
IMPORTANT!
When rece±v±ng a weak s±gnal, or rece±v±ng a s±g-
nal w±th ±nterference, the automat±c tun±ng funct±on
may tune the rece±ver to an undes±red s±gnal.
NOTE:
The automat±c tun±ng funct±on does not
act±ve on the sub band.
[NOTCH]
control
NOTCH
• Auto notch indication
Appears
• Manual notch indication
Appears
Unwanted tone frequency
Desired
signal (AF)
Desired
signal (AF)
Particular frequency is attenuated
Auto notch OFF
Auto notch ON
AUTO
TUNE
Appears
83
4
RECEIVE AND TRANSMIT