Operation Manual

#9 PASSBAND TUNING CONTROLS [TWIN-PBT]
(p. 75)
Adjusts the receiver’s IF filter passband width via
the DSP.
• Passband width and shift frequency are displayed in
the multi-function display.
• Push and hold [PBT-CLR] for 1 sec. to clear the PBT
sett
ings.
• 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 pass-
band width to reject interference. This transceiver uses
the DSP circuit for the PBT function.
PBT2
PBT1
– +
Low cutHigh cut Center
$0 PBT CLEAR SWITCH [PBT-CLR] (p. 75)
Push and hold for 1 sec. to clear the PBT settings.
• The indicator on this switch lights green when PBT is in
use.
$1 NOTCH SWITCH [NOTCH] (p. 83)
➥ Switches the notch function between auto, man-
ual and OFF in SSB and AM modes.
• Either auto or manual notch function can be deacti-
vated in others set mode. (p. 132)
➥ Turns the manual notch function ON and OFF
when pushed in CW, RTTY and PSK mode.
➥ Turns the auto notch function ON and OFF
when pushed in FM mode.
• “ ” appears when manual notch is in use.
• “
” appears when auto notch is in use.
• No indicator appears when the notch function is not
in use.
➥ Push and hold for 1 sec. to switch the manual
notch characteristics from wide, middle and nar-
row when manual notch function is activated.
• The indicator on this switch lights green when the
function is activated.
✔ What is the notch function?
The notch function is a narrow filter that eliminates un-
wanted CW or AM carrier tones while preserving the de-
s
ired voice signal. The DSP circuit automatically adjusts
the notch frequency to effectively eliminate unwanted
tones.
$2 ∂TX SWITCH [∂TX] (p. 87)
➥
Push to turn the ∂TX function ON and OFF.
• Use [RIT/∂TX] control to vary the ∂TX frequency.
➥ Push and hold for 1 sec. to add the ∂TX shift
frequency to the operating frequency.
✔ What is the ∂TX function?
∂TX shifts the transmit frequency without shifting the re-
ceive frequency. This is useful for simple split frequency
operation in CW, etc.
$3 CLEAR SWITCH [CLEAR] (pgs. 73, 87)
Push or push and hold for 1 sec.* to clear the RIT/
∂TX shift frequency.
* Depending on the quick RIT/∂TX clear function setting
(p. 132).
$4 TRANSMIT FREQUENCY CHECK SWITCH
[XFC]
➥ Monitors the transmit frequency (including ∂TX
frequency offset)
when pushed and held during
split frequency operation. (p. 88)
• While pushing and holding this switch, the transmit
frequency can be changed with the main dial, key-
pad, memo pad or [∫]/[√] s
witches.
• When the split lock function is turned ON, pushing
[XFC] cancels the dial lock function. (pgs. 88, 129)
➥ Monitors the operating frequency directly
when pushed and held when the RIT function
is turned ON. (RIT is temporarily cancelled.)
(p. 73)
$5
MAIN/SUB•M.SCOPE SWITCH
[MAIN/SUB M.SCOPE]
➥ Push to select access to the main or sub read-
out. (p. 26)
• The selected readout frequency is displayed clearly.
The sub readout functions only during split operation
or dualwatch.
➥ Push and hold for 1 sec. to turn the mini spec-
trum scope screen indication ON and OFF.
(p. 67)
• The mini spectrum scope screen can be indicated
with another screen, such as memory, set mode
screen, simultaneously.
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