Icom IC-756PRO Instruction Manual page 8

2
PANEL DESCRIPTION
Front panel
CEIVER
i756PRO
NB NR
BAL NR
COMP KEY SPEED BK-IN DELAY
@8 LOCK SWITCH [LOCK] (p. 45)
Turns the dial lock function ON and OFF.
@9 RIT/∂ ∂ TX CONTROL [RIT/∂ ∂ TX] (p. 34)
Shifts the receive and/or transmit frequency without
changing the transmit and/or receive frequency
while the RIT and/or ∂TX functions are ON.
• Rotate the control clockwise to increase the frequency,
or rotate the control counterclockwise to decrease the
frequency.
• The shift frequency range is ±9.999 kHz in 1 Hz steps
(or ±9.99 kHz in 10 Hz steps).
Low shift
#0 RIT SWITCH [RIT] (p. 34)
Turns the RIT function ON and OFF when
pushed.
• Use the [RIT/∂TX] control to vary the RIT frequency.
Adds the RIT shift frequency to the operating fre-
quency when pushed for 2 sec.
✔ What is the RIT function?
The RIT (Receiver Incremental Tuning) shifts the receive fre-
quency without shifting the transmit frequency.
This is useful for fine tuning stations calling you on an off-fre-
quency or when you prefer to listen to slightly different-
sounding voice characteristics, etc.
#1 ∂ ∂ TX SWITCH [∂ ∂ TX] (p. 34)
Turns the ∂TX function ON and OFF when
pushed.
• Use the [RIT/∂TX] control to vary the ∂TX frequency.
Adds the ∂TX shift frequency to the operating fre-
quency when pushed for 2 sec.
6
(continued)
F-1 F-2 F-3 F-4
SSB CW/RTTY AM/FM FILTER
RIT/∂TX
High shift
$ 5 $ 4 $ 3 $ 2 $ 1 $ 0 # 9
1.8 1 3.5 2 7 3
SPLIT
10 4 14 5 18 6
DUAL
WATCH
21 7 24 8 28 9
CHANGE
F-INP
• 50 0
GENE
ENT
VFO/
MEMO
MP-W MP-R
MAIN/
SUB
RX
TX
F-5
SPEECH
EXIT
✔ What is the ∂ ∂ TX function?
The ∂TX shifts the transmit frequency without shifting the re-
ceive frequency. This is useful for simple split frequency op-
eration in CW, etc.
#2 CLEAR SWITCH [CLEAR] (p. 34)
Clears the RIT/∂TX shift frequency when pushed
for 2 sec.
#3 CW PITCH CONTROL [CW PITCH]
(outer control; p. 29)
Shifts the received CW audio pitch and monitored
CW audio pitch without changing the operating fre-
quency.
NOTCH
Lower frequency
Approx. 300 Hz
#4 MANUAL NOTCH FILTER CONTROL [NOTCH]
(inner control; p. 27)
Varies the peak frequency of the manual notch fil-
ter to pick out a receive signal from interference
while the manual notch function is ON.
• Notch filter center frequency:
SSB : 0 Hz to 5100 Hz
CW : –900 Hz + CW pitch freq. to 4200 Hz + CW
pitch freq.
AM : –5100 Hz to 5100 Hz
NOTCH
Lower frequency
# 8 # 7
TWIN PBT
Y
Z
MW
PBT CLR NOTCH
# 6
M-CL
# 5
NOTCH CW PITCH
TS
# 4
XFC
LOCK
# 3
RIT TX CLEAR
# 2
# 1
RIT/ TX
# 0
LOCK
@ 8 @ 9
CW PITCH
Higher frequency
Approx. 900 Hz
CW PITCH
Higher frequency