Operation Manual

1-10
■ Front panel (continued)
*0 RIT/
∂∂
TX CONTROL [RIT/
∂∂
TX] (pgs. 5-10, 6-4)
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).
*1 PASSBAND TUNING CONTROLS [TWIN PBT]
(for MAIN band; p. 5-12)
*2 PASSBAND TUNING CONTROLS [TWIN PBT]
(for SUB band; p. 5-12)
Adjusts the receiver’s IF filter “passband width” via
the DSP.
• Passband width and shift frequency are displayed in the
multi-function display.
• Push [PBT CLEAR] for 1 sec. to clear the PBT settings.
• Variable range is set to half of the IF filter passband
width. 25 Hz steps and 50 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.
*3 PBT CLEAR SWITCH [PBT CLEAR]
(for MAIN band; p. 5-12)
*4 PBT CLEAR SWITCH [PBT CLEAR]
(for SUB band; p. 5-12)
Clears the PBT settings when pushed for 1 sec.
• The [PBT CLEAR] indicator above this switch lights
when PBT is in use.
PBT1
PBT2
Low cutHigh cut Center
– +
Frequency
increases
Frequency
decreases
1
PANEL DESCRIPTION
*0
(5 (6 (7 (8
*3*1 *2*4
*8
*7
*9
(0
(2
(3
(4
*6
*5
(1