ICOM IC-703 Manuale Utente

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1

PANEL DESCRIPTION

METER SELECTION (p. 52)

Selects the type of meter displayed (dur-
ing transmit) in the function display.

• Power, ALC or SWR metering can be se-

lected.

• Only an S-meter is available for receive.

DM4 functions

DURING SSB/AM OPERATION:

DURING CW OPERATION:

DURING RTTY OPERATION:

DURING SSB-D OPERATION:

DURING FM OPERATION:

VOX FUNCTION (p. 53)

➥Push momentarily to toggle the VOX func-

tion ON and OFF.

• “VOX” appears when the VOX function is

ON.

➥Push for 1 sec. to enter the VOX set

mode.

• The VOX delay, VOX gain and ANTI-VOX

can be set in VOX set mode.

✔ What is the VOX function?

The VOX function (voice operated transmission) starts trans-
mission without pushing the PTT switch when you speak into
the microphone; then, automatically returns to receive when
you stop speaking.

SPEECH COMPRESSOR (p. 54)

➥Push momentarily to toggle the speech

compressor ON and OFF.

• “COM” appears when the speech compres-

sor is ON.

➥Push for 1 sec. to enter the compression

level set mode.

• The COMP gain can be set in compression

level set mode.

AGC (p. 48)

Push to change the time constant of the
AGC circuit.

• “F

AGC

” appears when the fast time constant

is selected.

Push to toggle the 1/4 tuning function ON
and OFF.

• When the 

1

⁄

4

function is ON, a bar appears

under the 

1

⁄

4

indication and fine tuning can be

used.

KEYER SET MODE (p. 32)

Push for 1 sec. to enter the keyer set
mode.

• The break-in setting, break-in delay time, CW

pitch, CW paddle type and dot/dash ratio can
be set in the keyer set mode.

✔ What is the break-in function?

Full break-in (QSK) activates the receiver between transmit-
ted dots and dashes. This is useful when operating in nets,
or during DX pileups and during contests, when “fast ex-
changes” are common.

RTTY TONE SET MODE (p. 40)

➥Push for 1 sec. to enter the RTTY tone set

mode.

• The RTTY tone frequency, RTTY shift fre-

quency and RTTY keying polarity can be set
in RTTY tone set mode.

➥Push momentarily to select the subaudi-

ble tone encoder for repeater use, tone
squelch function and OFF. (pgs. 43–45)

• “T” appears when the repeater tone function

is ON. (pgs. 43, 45)

• “TSQL” appears when the tone squelch func-

tion is ON. (p. 43)

➥Push for 1 sec. to enter the FM tone set

mode. (p. 44)

• The repeater tone frequency, tone squelch

frequency can be set in FM tone set mode.

TON

TON

KEY

1/4

AGC

COM

VOX

M4

VOX

TON

M4

1/4

AGC

M4

1/4

TON

AGC

M4

KEY

1/4

AGC

M4

VOX

COM

AGC

MET