ICOM iC-r8500 Bedienungsanleitung PDF herunterladen (Seite 4)

q POWER SWITCH [POWER]

Turns power ON and OFF.

w SLEEP/SET SWITCH [SLEEP/SET]

➥ Push momentarily to set the sleep timer (p. 29).

• Selectable times are 30, 60, 90, 120 min. or OFF.

•“ ” appears in the function display when the

sleep timer is set.

➥ Push for 1 sec. to enter quick set mode (p. 30).

• Use the [M-CH] selector and main dial to select items

and contents, respectively.

RECORDER REMOTE JACK [REC REMOTE] (p. 10)

Controls the running of a tape recorder for record-

ing. Connects to the REMOTE jack on a tape

recorder.

r RECORDER JACK [REC OUT] (p. 10)

Outputs an audio signal. Connect to the AUX or

LINE IN jack on a tape recorder.

t HEADPHONE JACK [PHONES]

Accepts headphones with 4–16 Ω impedance.

• When headphones are connected, no receive audio comes

from the speaker.

• Stereo headphones can be connected, however, output

is monaural.

y MODE SWITCHES [WFM]/[FM]/[AM]/[SSB/CW]

(p. 13)

➥ Push to select an operating mode.

• The following keys toggle between several modes:

[FM] .................FM, FM narrow

[AM] .................AM, AM narrow, AM wide

[SSB/CW] ........USB, LSB, CW, optional CW narrow

➥ When SSB/CW mode is selected, push [SSB/CW]

for 1 sec. to adjust the BFO frequency. (p. 15).

u NOISE BLANKER/AFC SWITCH [NB]/[AFC]

Activates the noise blanker function or automatic fre-

quency control function.

• The noise blanker is used for removing pulse-type noise

when SSB, CW or AM mode is selected (p. 15).

• The automatic frequency control tunes the displayed fre-

quency automatically when an off-center frequency is re-

ceived. It activates when FM or WFM is selected (p. 14).

i AUDIO FREQUENCY GAIN CONTROL

[AF GAIN] (p. 13)

Rotate clockwise to increase the audio output; rotate

counterclockwise to decrease the audio output.

o AUTOMATIC GAIN CONTROL [AGC] (p. 15)

Toggles the time constant of the AGC circuit be-

tween “slow” and “fast.”

• When “fast” is selected, “AGC-F” appears.

• Cannot be used in FM or WFM modes.

!0 SQUELCH CONTROL [SQUELCH] (p. 14)

Varies the squelch threshold level (to mute noise

when receiving no signal).

!1 IF SHIFT CONTROL [IF SHIFT] (p. 14)

Shifts the center frequency of the receiver’s IF pass-

band to reject interfering signals.

• Cannot be used in FM, WFM and AM modes.

PANEL DESCRIPTION

MODE

WFM

NB/AFC AGC 10dB 20dB

FM AM

APF

SPCH

SSB/CW

AF GAIN SQUELCH

PHONES

REC OUT

SLEEP/

REC

REMOTE

IF SHIFTAPF

SET

LOCK

COMMUNICATION RECEIVER

iC- r8500

POWER

SIGNAL

13579

20dB

60dB

yio!0 !1 !2 !3 !4u

RECV

BANK

10-ATT-20

APF-NAGC-FAFCNB

SLEEP

LOCK

ICOM

S-meter squelch

threshold

Noise squelch

threshold (not

available in SSB,

CW, WFM and

AM narrow modes)

• Signals below the

S-meter level

are muted.

■ Front panel

1 2 3 4 5 6 7 8 9 ... 47 48

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