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

⁄

function ON and OFF in

RTTY mode. (p. 24)

⁄

function sets dial rotation to

⁄

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.

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.

SEMI BREAK-IN DELAY CONTROL
[BK-IN DELAY]
Adjusts the transmit-to-receive switching delay time
for CW semi break-in operation.

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)

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.

SPEECH SWITCH [SPEECH] (pgs. 59, 61)
Announces the selected readout frequency when an
optional UT-102 is installed.

TUNING DIAL (p. 23)
Changes the displayed frequency, selects set mode
items, etc.

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.

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)

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.

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)

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).

RTTY

SSB

BK-IN DELAY

Short delay for
high speed keying

Long delay for
slow speed keying

Slow

Fast

KEY SPEED

KEYER

1/4

1/4
OFF

OFF

COMP

OFF

PANEL DESCRIPTION