Icom IC-756 User Manual
Page 7
• Turns the speech compressor ON and
OFF in SSB and AM modes. (p. 34)
• Enters memory keyer set mode in CW
mode. (pgs. 35, 36)
• Turns the
1
⁄
4
function ON and OFF in
RTTY mode. (p. 24)
-
1
⁄
4
function sets dial rotation to
1
⁄
4
of normal for
fine tuning.
✔
What is the speech compressor?
The speech compressor compresses the transmitter
audio input to increase the average audio output level.
Therefore, talk power is increased. This function is effec-
tive for long distance communication or when propaga-
tion conditions are poor.
!9
ELECTRONIC CW KEYER SPEED CONTROL
[KEY SPEED] (p. 35)
Adjusts the internal electronic CW keyer’s speed.
- 7 wpm (min.) to 56 wpm (max.) can be set.
@0
SEMI BREAK-IN DELAY CONTROL
[BK-IN DELAY]
Adjusts the transmit-to-receive switching delay time
for CW semi break-in operation.
@1
MODE SWITCHES
Selects the desired mode. (p. 25)
- Announces the selected mode when an optional UT-102
is installed. (pgs. 59, 61)
• Selects SSB and SSB narrow (USB-N,
LSB-N) mode alternately.
• Toggles USB and LSB mode when pushed
for 2 sec.
• Selects CW and CW narrow (CW-N) mode
alternately.
• Toggles CW and CW-R (CW reverse)
mode when pushed for 2 sec.
• Selects RTTY and RTTY narrow (RTTY-N)
mode alternately.
• Toggles RTTY and RTTY-R (RTTY re-
verse) mode when pushed for 2 sec.
• Selects AM and AM narrow (AM-N) mode
alternately.
• Selects FM and FM narrow (FM-N) mode
alternately.
• Toggles the subaudible tone encoder ON
and OFF in FM mode when pushed for 2
sec. (pgs. 38, 57)
@2
LCD FUNCTION SWITCHES [F-1]–[F-5]
Push to select the function indicated in the LCD dis-
play above these switches.
- Functions vary depending on the operating condition.
@3
SPEECH SWITCH [SPEECH] (pgs. 59, 61)
Announces the selected readout frequency when an
optional UT-102 is installed.
@4
TUNING DIAL (p. 23)
Changes the displayed frequency, selects set mode
items, etc.
@5
MAIN/SUB SWITCH [MAIN/SUB]
Selects the main or sub readout for access.
- The sub readout frequency is displayed in outline and
functions only during split operation or dualwatch.
@6
VFO/MEMORY SWITCH [VFO/MEMO]
• Toggles the selected readout operating mode be-
tween the VFO mode and memory mode when
pushed. (pgs. 22, 41)
• Transfers the memory contents to VFO when
pushed for 2 sec. (p. 44)
@7
MAIN/SUB CHANGE SWITCH [CHANGE]
• Toggles the frequency and selected memory chan-
nel between main and sub readouts when pushed.
- Toggles between transmit frequency and receive fre-
quency when the split frequency function is ON. (p. 31)
• Equalizes the sub readout frequency to the main
readout frequency when pushed for 2 sec.
@8
DUALWATCH SWITCH [DUALWATCH] (p. 30)
• Turns the dualwatch function ON and OFF when
pushed.
• Turns the dualwatch function ON and equalizes the
sub readout frequency to the main readout when
pushed for 2 sec. (Quick dualwatch function)
- The quick dualwatch function can be turned OFF using
set mode. (p. 56)
@9
SPLIT SWITCH [SPLIT] (p. 31)
• Turns the split function ON and OFF when pushed.
• Turns the split function ON, equalizes the sub
readout frequency to the main readout and sets
the sub readout for frequency input when pushed
for 2 sec. in non-FM modes. (Quick split function)
- The offset frequency is shifted from the main readout
frequency in FM mode. (pgs. 38, 57)
• Turns the split function ON and shifts the sub read-
out frequency after inputting an offset (± 1 MHz in 1
kHz steps).
FM
AM
RTTY
CW
SSB
BK-IN DELAY
Short delay for
high speed keying
Long delay for
slow speed keying
Slow
Fast
KEY SPEED
KEYER
KEYER
1/4
1/4
OFF
OFF
COMP
COMP
OFF
OFF
4
1
PANEL DESCRIPTION