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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 the SSB, AM and FM
mode.
The manual notch can be used in the SSB, CW,
RTTY, PSK and AM modes.
➥
Push
[NOTCH] to toggle the notch function
between auto, manual and OFF in the SSB and
AM modes.
• Either auto or manual notch function can be
deactivated in the Others set mode. (p. 140)
➥
Push
[NOTCH] to turn the manual notch function
ON or OFF in the CW, RTTY, PSK modes.
➥
Push
[NOTCH] to turn the auto notch function ON
or OFF in
the
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, hold down
[NOTCH] for 1 second 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 tune function
<MODE> 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 is selected.
➥
Push
[AUTO TUNE] to toggle the auto tune
function ON or OFF.
• “
” blinks when auto tune function is
activated.
• After 2 seconds has passed, the auto tune function
stops tuning automatically even it’s still off-frequency.
• If
[AUTO TUNE] is pushed when the RIT function is
ON, the auto tune function changes the RIT frequency,
not the displayed frequency.
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.
[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
Summary of Contents for IC-7600
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