ICOM ic-7800 取り扱いマニュアル

1-3

i 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

o MIC GAIN CONTROL [MIC]

Adjusts microphone input gain.

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

be adjusted independently in set mode. (p. 12-4)

✔ How to set the microphone gain.

Set the [MIC] control so that the ALC meter sometimes
swings during normal voice transmission in SSB, AM or FM
mode.

!0 VOX/BREAK-IN SWITCH [VOX/BK-IN]

➥ Push to turn the VOX function ON and OFF dur-

ing SSB, AM and FM mode operation. (p. 6-2)

➥ Push to turn the break-in function ON

(semi-break-

in, full-break-in)

and OFF during CW mode opera-

tion. (p. 6-3)

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

✔ What is the VOX function?

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

✔ What is the break-in function?

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

!1 ELECTRONIC CW KEYER SPEED CONTROL

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

• 6 wpm (min.) to 60 wpm (max.) can be set.

!2 BREAK-IN DELAY CONTROL [DELAY] (p. 6-3)

Adjusts the transmit-to-receive switching delay time
for CW semi-break-in operations.

!3 MONITOR SWITCH [MONI] (p. 6-4)

Monitors your transmitted IF signal.

• The CW sidetone functions regardless of [MONI] switch

setting in CW mode.

• The [MONI] indicator above this switch lights green

while the function is activated.

!4 MEMORY CARD SLOT [CF CARD] (p. 2-3)

Insert the supplied CF (Compact Flash) memory
card for both reading/storing a wide variety of the
transceiver’s information and data.

• The indicator beside the slot lights or blinks when the

transceiver reads or writes to the memory card.

• Push the eject button to remove the memory card.

!5 MONITOR GAIN CONTROL [MONI GAIN] (p. 6-4)

Adjusts the transmit IF signal monitor level.

!6 COMPRESSION LEVEL CONTROL [COMP]

(p. 6-5)
Adjusts the speech compression level in SSB.

!7 DRIVE GAIN CONTROL [DRIVE] (p. 3-13)

Adjusts the transmitter level at the driver stage. Ac-
tivate in all modes

(except SSB with [COMP] OFF)

!8 VOX GAIN CONTROL [VOX GAIN] (p. 6-2)

Adjusts the transmit/receive switching threshold
level for VOX operation.

Low

sensitivity

High
sensitivity

Push

Decreases

Increases

Push

Compression

gain decreases

Compression
gain increases

Push

Monitor gain

decreases

Monitor gain
increases

Push

Long delay for
slow speed keying

Short delay for

high speed keying

Max.
60 wpm

Min.

6 wpm

Recommended level for
an Icom microphone

Decreases

Increases

Decreases

PANEL DESCRIPTION