Operation Manual

ManualsBrandsIcom ManualsAudioIC-7600

y MICROPHONE CONNECTOR [MIC]

Accepts the supplied or optional microphone.

• See p. 161 for appropriate microphones.

• See p. 23 for microphone connector information.

u MIC GAIN CONTROL [MIC GAIN] (p. 36)

Adjusts microphone input gain.

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

can be adjusted independently in level set mode.

(p. 121)

✔ How to set the microphone gain.

Set the [MIC GAIN] control so that the ALC meter

ccasionally moves up-scale during normal voice

transmission in SSB, AM or FM mode.

MIC GAIN

Recommended level for

an Icom microphone

Increases

Decreases

Push

i AF CONTROL [AF] (inner control; p. 34)

Varies the audio output level of the speaker or

headphones.

Increases

Decreases

o RF POWER CONTROL [RF POWER] (p. 36)

Continuously varies the RF output power from

minimum (2 W*) to maximum (100 W*).

*AM mode: 1 W to 30 W

Increases

max. 100 W

(30 W for AM)

Decreases

min. 2 W

(1 W for AM)

Push

!0 RF GAIN CONTROL/SQUELCH CONTROL

[RF/SQL] (outer control; p. 33)

Adjusts the RF gain and squelch threshold level.

The squelch removes noise output from the speaker

(closed condition) when no signal is received.

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

available for other modes.

• 12 to 1 o’clock position is recommended for any setting

of the [RF/SQL] control.

• T

he control can be set as ‘Auto’ (RF gain control in

SSB, CW, RTTY and PSK; squelch control in AM and

FM) or squelch control (RF gain is fixed at maximum)

in set mode as follows. (p. 128)

MODE

SET MODE SETTING

AUTO SQL RF GAIN + SQL

SSB, CW

RTTY/PSK

RF GAIN SQL RF GAIN + SQL

AM, FM SQL SQL RF GAIN + SQL

• When setting as RF gain/squelch control

Maximum

RF gain

S-meter

squelch

Noise squelch (FM mode)

Squelch is

open.

RF gain

adjustable

range

Recommended level

• When functioning as RF gain control

(Squelch is ﬁxed open; SSB, CW, RTTY and PSK only)

Minimum RF gain

Adjustable

range

Maximum

RF gain

• When functioning as squelch control

(RF gain is ﬁxed at maximum.)

Squelch is

open.

S-meter

squelch

S-meter squelch

threshold

Noise squelch

threshold

(FM mode)

Shallow Deep

Noise squelch (FM mode)

While rotating the RF gain control, noise may be

heard. This comes from the DSP unit and does not

indicate an equipment malfunction.

PANEL DESCRIPTION