Icom IC-7700 Instruction Manual page 20

1
PANEL DESCRIPTION
■ Front panel (continued)
TX RX
F-1 F-2
SSB CW
DRIVE COMP MONI GAIN VOX GAIN
^1 PASSBAND TUNING CONTROLS [TWIN-PBT]
(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 and hold
PBT-CLR
settings.
• The PBT is adjustable in 50 Hz steps in the SSB/CW/
RTTY/PSK modes, and 200 Hz in the AM mode. In this
time, the shift value changes in 25 Hz steps in the SSB/
CW/RTTY/PSK modes, and 100 Hz in the AM mode.
• These controls function as an IF shift control.
✔ 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.
–
High cut
SPLIT
F-3 F-4 F-5 F-6
RTTY/PSK AM/FM DATA M.SCOPE
ANTI VOX CONTRAST BRIGHT
for 1 sec. to clear the PBT
PBT2
PBT1
Center Low cut
LOCK
1.8 3.5
1
10 14
4
21 24
7
50
GENE
MP-W
XFC
F-7
AUTO
EXIT/SET
TUNE
REC PLAY
VOICE MEMORY
^2 PBT CLEAR SWITCH
Clears the PBT settings when pushed and held for
1 sec.
• The [PBT-CLR] indicator above this switch lights when
PBT is in use.
^3 DIGITAL RF SELECTOR SWITCH
(p. 5-18)
Turns the digital RF selector ON or OFF.
• The [DIGI-SEL] indicator lights green when the prese-
lector is in use.
^4 DIGITAL RF SELECTOR CONTROL [DIGI-SEL]
(p. 5-18)
Adjusts the digital RF selector center frequency.
• The control can be reassigned as the audio peak filter
adjustment (p. 12-16)
frequency
+
1-10
7
2 3
FILTER
18
5 6
PBT-CLR
28
8 9
F-INP
0
ENT
DIGI-SEL
MP-R
APF/TPF
MW V/M
NOTCH
A/B A=B
TS
RIT
∂TX
CLEAR
SPEECH
LOCK
SPLIT
&1 &0 ^9
PBT-CLR
Higher
frequency
Lower
TWIN-PBT
^1
^2
DIGI-SEL NOTCH
^3
^4
^5
^6
RIT/∂TX
^7
CW PITCH
^8
(p. 5-12)
DIGI-SEL