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PANEL DESCRIPTION
&3
DIGITAL RF SELECTOR KEY [DIGI-SEL]
Push to turn the digital RF preselector ON or OFF.
• The [DIGI-SEL] indicator lights white when the preselec
-
tor is in use.
&4
PASSBAND TUNING CONTROLS [TWIN PBT]
Adjusts the receiver’s IF filter
‘passband width’
using
the DSP.
• The passband width and shift frequency are displayed in
the Multi-function display.
•
Hold down [PBT CLEAR] for 1 second to clear the PBT
settings.
• The adjustment range is half of the selected filter pass
-
band width, and the value is adjustable in 25 Hz steps
for the SSB/CW/RTTY/PSK modes, and 100 Hz steps
for the AM mode.
PBT2
PBT1
Low cut
High cut
Center
–
+
✔
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.
&5
RIT/
∂
TX CONTROL [RIT/
∂
TX]
Shifts the receive and/or transmit frequency without
changing the transmit and/or receive frequency.
• Rotate the control clockwise to increase the frequency,
or rotate the control counterclockwise to decrease the
frequency. The RIT or
∂
TX functions must be ON.
• The shift frequency range is ±9.999 kHz in 1 Hz steps (or
±9.99 kHz in 10 Hz steps).