Icom IC-7700 - Page 20

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 cutHigh 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 MEMORYBRIGHTCONTRASTVOX GAINMONI GAINCOMPDRIVE 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-1F-2 F-3F-4 F-5F-6 F-7
LOCKTX 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)