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Icom IC-78 Manual

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PANEL DESCRIPTION
!3 ATTENUATOR SWITCH [ATT] (p. 19)
Push to turn the 20 dB attenuator function ON and
OFF.
!4 TUNER SWITCH [TUNER] (p. 18)
➥Push to turn the antenna tuner function ON and
OFF.
➥Push for 1 sec. to manually tune the tuner.
• An optional antenna tuner must be connected.
• When the tuner cannot tune the antenna, the tun-
ing circuit is bypassed automatically after 20 sec.
!5 SET SWITCH [SET]
➥Push for 1 sec. to enter the
quick set mode
.
(p. 28)
➥Push and hold [SET], then push [PWR] to enter
the
initial set mode
. (p. 28)
➥Push to change the meter function; (p. 16)
•PO: indicates the relative RF output power.
•ALC: Indicates ALC level.
•SWR: Indicates the SWR over the transmission
line.
!6 MIC COMPRESSOR SWITCH [COMP] (p. 17)
Turn the Mic. compressor function ON and OFF.
!7 KEYPAD
The keypad can be used for several functions as
described below:
➥[0] to [9]
— For entering operating channel number. (p. 13)
— Selects a character during channel comment
programming. (p. 27)
➥[ENT]
— Direct channel number input. (p. 13)
➥[TXF]
— Transmit frequency indication. (p.14)
— Selects a space and changes the editing digit
during channel comment programming. (p. 27)
!8 NOISE BLANKER SWITCH [NB] (p. 19)
➥Turns the noise blanker ON and OFF. The noise
blanker reduces pulse-type noise such as that
generated by automobile ignition systems. This
function is not effective against non pulse-type
noise.
➥Push [NB] for 1 sec. to enter the noise blanker
level setting condition.
!9 TONE SWITCH [TONE]
☛
This key action may differ according to version.
➥Selects the call channel and emits a distress
alarm tone from the speaker. (p. 36)
➥Transmits a distress alarm or alarm testing signal
when pushed for 1 sec. (p. 36)
•Cancel the distress alarm tone emission, or dis-
tress alarm transmission.
➥Selects the tuning step item in the
quick set mode
directly.
➥No function is assigned.
@0 CALL SWITCH [CALL]
➥Push to select call channel.
•Push again to return to previous condition.
@1 MODE SWITCH [MODE] (p. 15)
Push to change an operating mode.
•Push [MODE] for 1 sec. during SSB mode to
switch between LSB or USB.
•Push [MODE] for 1 sec. during CW or RTTY
mode, to switch between CW and CW reverse or
RTTY and RTTY reverse. “ ” appears on the
display.
… 5 …


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