Icom IC-7600 Instruction Manual page 17

#9 PASSBAND TUNING CONTROLS [TWIN-PBT]
(p. 83)
Adjusts the receiver's IF filter passband width via
the DSP.
• Passband width and shift frequency are displayed in
the multi-function display.
• Hold down [PBT-CLR] for 1 second to clear the PBT
settings.
• Adjustment range is set to half of the IF filter passband
width. 25 Hz steps and 100 Hz steps are available.
What is the PBT control?
✓
The PBT function electronically modifies the IF
passband width to reject interference. This transceiver
uses the DSP circuit for the PBT function.
–
High cut Center
$0 PBT CLEAR SWITCH [PBT-CLR] (p. 83)
Hold down for 1 second to clear the PBT settings.
• The indicator on this switch lights green when PBT is in
use.
$1 NOTCH SWITCH [NOTCH] (p. 91)
➥ Switches the notch function between auto,
manual and OFF in
the
• Either auto or manual notch function can be
deactivated in the Others set mode. (p. 140)
➥ Turns the manual notch function ON or OFF
when pushed in the CW, RTTY or PSK mode.
➥ Turns the auto notch function ON or OFF when
pushed in FM mode.
the
• " " appears when manual notch is in use.
• " " appears when auto notch is in use.
• No indicator appears when the notch function is
OFF.
➥ Hold down for 1 second to switch the manual
notch characteristics from wide, middle and
narrow when manual notch function is activated.
• The indicator on this switch lights green when the
function is activated.
PBT2
PBT1
+
Low cut
SSB and AM modes.
PANEL DESCRIPTION
What is the notch function?
✓
The notch function is a narrow filter that eliminates
unwanted CW or AM carrier tones while
preserving the desired voice signal. The DSP
circuit automatically adjusts the notch frequency to
effectively eliminate unwanted tones.
$2 ∂TX SWITCH [∂TX] (p. 95)
➥ Push to turn the ∂TX function ON or OFF.
• Use [RIT/∂TX] control to vary the ∂TX frequency.
➥ Hold down for 1 second to add the ∂TX shift
frequency to the operating frequency.
What is the ∂TX function?
✓
∂TX shifts the transmit frequency without shifting
the receive frequency. This is useful for simple split
frequency operation in CW, etc.
$3 CLEAR SWITCH [CLEAR] (pp. 81, 95)
Push, or hold down for 1 second* to clear the
RIT/∂TX shift frequency.
* Depending on the quick RIT/∂TX clear function setting.
(p. 140)
$4 TRANSMIT FREQUENCY CHECK SWITCH
[XFC]
➥ Directly monitors the transmit frequency
(including ∂TX frequency offset)
during split frequency operation. (p. 95)
• While holding down this switch, the transmit
frequency can be changed with the main dial,
keypad, memo pad or [∫]/[√] switches.
• When the split lock function is turned ON, pushing
[XFC] cancels the dial lock function. (pp. 95, 137)
➥ Monitors the operating frequency directly when
held down when the RIT function is turned ON.
(RIT is temporarily cancelled.) (p. 81)
$5 MAIN/SUB•M.SCOPE SWITCH
[MAIN/SUB M.SCOPE]
➥ Push to select access to the main or sub
readout. (p. 28)
• The selected readout frequency is displayed clearly.
The sub readout functions only during split operation
or dualwatch.
➥ Hold down for 1 second to turn the mini
spectrum scope screen display ON or OFF.
(p. 73)
• The mini spectrum scope screen can be displayed
with another screen, such as memory, set mode
screen, simultaneously.
1
when held down
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