ICOM IC-7700 User Manual

1-3

u

MICROPHONE CONNECTOR [MIC]
Accepts an optional microphone.

• See p. 15-4 for appropriate microphones.
• See p. 2-10 for microphone connector information.

i

MIC GAIN CONTROL [MIC] (p. 3-12)
Adjusts microphone input gain.

• The transmit audio tone in SSB, AM and FM modes can

be adjusted independently in set mode. (p. 12-5)

✔

Set the [MIC] control so that the ALC meter occasionally
moves up-scale during normal voice transmission in SSB,
AM or FM mode.

o

➥

Push to turn the VOX function ON and OFF dur-
ing SSB, AM and FM mode operation. (p. 6-2)

➥

Push and hold for 1 sec. to enter VOX set mode.
(p. 6-2)

✔

The VOX function (voice operated transmission) activates
transmission without pushing the transmit switch or PTT
switch when you speak into the microphone; then auto-
matically returns to receive when you stop speaking.

!0

RF POWER CONTROL [RF PWR] (p. 3-12)
Continuously varies the RF output power from min-
imum 

(5 W*)

to maximum 

(200 W*)

.

*AM mode: 5 W to 50 W

!1

BREAK-IN SWITCH 
Push to turn the break-in function ON 

(semi-break-in,

full-break-in)

and OFF during CW mode operation.

(p. 6-3)

✔

The break-in function switches transmit and receive with
CW keying. Full break-in (QSK) can monitor the receive
signal between CW dots and dashes.

!2

ELECTRONIC CW KEYER SPEED CONTROL
[KEY SPEED] (p. 4-4)
Adjusts the internal electronic CW keyer’s speed.

• 6 wpm (min.) to 48 wpm (max.) is the available range.

!3

(p. 6-4)

Monitors your transmitted IF signal.

• The CW sidetone functions regardless of 

switch setting in CW mode.

• The [MONITOR] indicator above this switch lights green

while the function is activated.

!4

BREAK-IN DELAY CONTROL [DELAY] (p. 6-3)
Adjusts the transmit-to-receive switching delay time
for CW semi-break-in operations.

!5

AGC CONTROL [AGC] (p. 5-11)
Adjusts the continuously-variable AGC circuit time
constant.

• To use [AGC] control, push 

([AGC VR] indi-

cator lights).

!6

SQUELCH CONTROL [SQL] 
(outer control; p. 3-9)
Adjusts the squelch threshold level. The squelch
mutes noise output from the speaker (closed condi-
tion) when no signal is received.

• The squelch is particularly effective for FM. It is also

available in other modes.

• The 11 to 12 o’clock position is recommended for the

most effective use of the [SQL] control.

AGC VR

MONITOR

Deep

Deep

Noise squelch

Squelch

threshold

Shallow

Shallow

S-meter 
squelch

Squelch is 
open

Slow

Fast

Long delay for
slow speed keying

Short delay for

high speed keying

Max.
48 wpm

Min.

6 wpm

Increases

Decreases

Recommended level for
an Icom microphone

Decreases

Decreases

Increases

Increases