Panel Description; I Front Panel - Icom IC-703 Instruction Manual

1

PANEL DESCRIPTION

I Front panel

q
POWER
P.AMP ATT
@2
@1
TUNER
@0
PHONES
!9
q POWER SWITCH [POWER] (p. 17)
➥ While transceiver's power is OFF:
Push to turn power ON.
• Turn the DC power supply ON in advance.
➥ While transceiver's power is ON:
❍ Push momentarily to indicate the connected
power supply voltage.
❍ Push for 1 sec. to turn power OFF.
w AF GAIN CONTROL [AF] (inner control; p. 17)
Varies the audio output level from the speaker.
Decreases
No audio output
e RF GAIN CONTROL/SQUELCH CONTROL
[RF/SQL] (outer control; p. 24)
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 13 o'clock position is recommended for any setting
of the [RF/SQL] control.
• The control can be set as 'Auto' (RF gain control in SSB,
CW and RTTY; squelch control in AM and FM) or
squelch control (RF gain is fixed at maximum) in initial
set mode as follows. (p. 79)
MODE
AUTO
SSB, CW
RF GAIN
RTTY
AM, FM SQL
1
w e
AF RF SQL
USB
S1 3 5 7 9 20
RIT
SUB
P 5
O
M-CH SHIFT
MENU F 1
!8 !7 !6 !5
AF RF/SQL
Increases
Max. audio output
SET MODE SETTING
SQL RF GAIN + SQL
SQL RF GAIN + SQL
SQL RF GAIN + SQL
r t
TS
RX
VFO A
40 60dB
TX
CH
10
DISPLAY
LOCK
F 2 F 3
!4 !3
• When setting as RF gain/squelch control
Squelch is
open.
RF gain
adjustable
range
• When functioning as RF gain control
(Squelch is fixed open; SSB, CW, RTTY only)
Adjustable
range
Minimum RF gain
• When functioning as squelch control
(RF gain is fixed at maximum.)
Noise squelch
threshold
(FM mode)
Squelch is
open.
Shallow
y u i
MODE
Y
BAND
BAND
Z
!2
!1
Noise squelch (FM mode)
Recommended level
Maximum
RF gain
S-meter
squelch
Maximum
RF gain
Noise squelch (FM mode)
S-meter squelch
threshold
S-meter
squelch
Deep
o
!0