Icom IC-78 Instruction Manual - Page 4

Panel Description

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2 PANEL DESCRIPTION s Front panel Speaker Function Display @1 @0 !9 !8 !7 !6 q !5 PWR !4 w !3 !2 e rt yu i o !0 !1 q POWER SWITCH [PWR] ¯ Push momentarily to turn power ON. • Turn the optional DC power supply ON in advance. ¯ Push for 1 sec. to turn power OFF. ¯ While pushing and holding [SET], push [PWR] to enter the initial set mode. (p. 28) w MICROPHONE CONNECTOR [MIC] Accepts supplied or optional microphone. • See p. 45 for appropriate microphones. • See p. 7 for microphone connector information. e HEADPHONE JACK [PHONES] (p. 11) Accepts headphones. •When headphones are connected, the internal speaker or connected external speaker does not function. u IF SHIFT CONTROLS [SHIFT] (outer control; p. 20) Shifts the center frequency of the receiver's IF passband. • Rotate the control clockwise to shift the center frequency higher, or rotate the control counterclockwise to shift the center frequency lower. i LOCK SWITCH [LOCK] (p. 14) Push momentarily to turn the dial lock function ON and OFF. • The dial lock function electronically locks the channel selector. o CHANNEL SELECTOR Selects an operating channel, sets conditions in the quick/initial set mode items, etc. r AF CONTROL [AF] (inner control) Varies the audio output level from the speaker. !0 PREAMP SWITCH [P.AMP] (p. 19) Push to turn the preamp ON or OFF. t RF GAIN/SQUELCH CONTROL [RF/SQL] (outer control; pgs. 15, 31) Adjusts the squelch threshold level. The squelch removes noise output from the speaker (closed condition) when no signal is received. • The squelch is available for all modes. • The control can be set as the squelch plus RF gain controls or squelch control only (RF gain is fixed at maximum) in initial set mode. y RIT CONTROL [RIT] (inner control; p. 19) ¯ Shifts the receive frequency ±1.2 kHz for clear re- ception of an off frequency signal. • Rotate the control clockwise to increase the fre- quency, or rotate the control counterclockwise to decrease the frequency. " " appears on the display. !1 FC SWITCH [CH] ¯ Push to change the indication, channel comment or stored frequency. (p. 14)  This key action only for some versions. ¯ Push for 1 sec. to entering into VFO mode. (p. 35) !2 MEMORY CHANNEL UP/DOWN SWITCHES [√ DN]/[UP ∫] ¯ Push to select the operating channel. (p. 13) ¯ Push for 1 sec. to start scanning. (p. 14) ¯Push to select the quick/initial set mode items while quick/initial set mode is selected. (p. 28) ¯ Push to select the digit of channel comment while editing. (p. 27) 2

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■
Front panel
q
POWER SWITCH [PWR]
Push momentarily to turn power ON.
•Turn the optional DC power supply ON in advance.
Push for 1 sec. to turn power OFF.
While pushing and holding [SET], push [PWR] to
enter the
initial set mode
. (p. 28)
w
MICROPHONE CONNECTOR [MIC]
Accepts supplied or optional microphone.
•See p. 45 for appropriate microphones.
• See p. 7 for microphone connector information.
e
HEADPHONE JACK [PHONES]
(p. 11)
Accepts headphones.
•When headphones are connected, the internal
speaker or connected external speaker does not
function.
r
AF CONTROL [AF]
(inner control)
Varies the audio output level from the speaker.
t
RF GAIN/SQUELCH CONTROL [RF/SQL]
(outer control; pgs. 15, 31)
Adjusts the squelch threshold level. The squelch re-
moves noise output from the speaker (closed con-
dition) when no signal is received.
•The squelch is available for all modes.
• The control can be set as the squelch plus RF gain
controls or squelch control only (RF gain is fixed at
maximum) in initial set mode.
y
RIT CONTROL [RIT]
(inner control; p. 19)
Shifts the receive frequency ±1.2 kHz for clear re-
ception of an off frequency signal.
•Rotate the control clockwise to increase the fre-
quency, or rotate the control counterclockwise to
decrease the frequency. “
” appears on the
display.
u
IF SHIFT CONTROLS [SHIFT]
(outer control; p. 20)
Shifts the center frequency of the receiver’s IF
passband.
•Rotate the control clockwise to shift the center fre-
quency higher, or rotate the control counterclock-
wise to shift the center frequency lower.
i
LOCK SWITCH [LOCK]
(p. 14)
Push momentarily to turn the dial lock function ON
and OFF.
• The dial lock function electronically locks the chan-
nel selector.
o
CHANNEL SELECTOR
Selects an operating channel, sets conditions in the
quick/initial set mode items, etc.
!
0
PREAMP SWITCH [P.AMP]
(p. 19)
Push to turn the preamp ON or OFF.
!
1
FC SWITCH [CH]
Push to change the indication, channel comment
or stored frequency. (p. 14)
This key action only for some versions.
Push for 1 sec. to entering into VFO mode. (p. 35)
!
2
MEMORY CHANNEL UP/DOWN SWITCHES
[
√
DN]/[UP
∫
]
Push to select the operating channel. (p. 13)
Push for 1 sec. to start scanning. (p. 14)
Push to select the
quick/initial set mode
items
while
quick/initial set mode
is selected. (p. 28)
Push to select the digit of channel comment while
editing. (p. 27)
2
2
PANEL DESCRIPTION
PWR
Speaker
Function Display
@
1
@
0
!
9
!
7
!
5
!
4
!
6
!
3
!
2
!
0
!
8
!
1
o
i
u
y
t
r
e
w
q