1-10
^1
PASSBAND TUNING CONTROLS [TWIN-PBT]
(p. 5-13)
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.
• 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.
PBT2
PBT1
Low cut
High cut
Center
–
+
^2
PBT CLEAR SWITCH
PBT-CLR
(p. 5-13)
Clears the PBT settings when held down for 1 sec-
ond.
• The [PBT-CLR] indicator above this switch lights when
PBT is in use.
^3
DIGITAL RF SELECTOR SWITCH
DIGI-SEL
(p. 5-19)
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. 12-15)
Higher
frequency
Lower
frequency
1
PANEL DESCRIPTION
POWER
TUNER
TIMER
VOX
SSB
CW
RTTY/PSK
AM/FM
DATA
AUTO
TUNE
LOCK
TS
XFC
M.SCOPE
EXIT/SET
REC
PLAY
VOICE MEMORY
BRIGHT
CONTRAST
VOX GAIN
MONI GAIN
COMP
DRIVE
ANTI VOX
BK-IN
MONITOR
TRANSMIT
MIC
ELEC-KEY
PHONES
AF
RF
MIC
RF PWR
DIGI-SEL
NOTCH
RIT/
∂
TX
CW PITCH
TWIN-PBT
KEY SPEED
DELAY
F-1
F-2
F-3
F-4
F-5
F-6
F-7
LOCK
TX
RX
SPLIT
AGC VR
NR
FILTER
PBT-CLR
DIGI-SEL
APF/TPF
NOTCH
RIT
CLEAR
SPEECH
1
1.8
2
3.5
3
7
4
10
5
14
6
18
7
21
8
24
MP-W
MP-R
MW
V/M
A/B
A=B
9
28
GENE
0
50
ENT
F-INP
∂
TX
NB
SPLIT
i7700
HF/50MHz TRANSCEIVER
AGC
SQL
NR
NB
&1 &0
^9
^1
^2
^3
^4
^5
^6
^7
^8
■
Front panel (continued)
