Panel Description; Front Panel - Icom IC-746PRO Instruction Manual

1

PANEL DESCRIPTION

Front panel

q
w
e
r
t
q POWER SWITCH [POWER]
Push momentarily to turn power ON.
• Turn the optional DC power supply ON in advance.
Push for 1 sec. to turn power OFF.
w TRANSMIT SWITCH [TRANSMIT]
Selects transmitting or receiving.
• The [TX] indicator lights red while transmitting and the
[RX] indicator lights green when the squelch is open.
e HEADPHONE JACK [PHONES]
Accepts headphones.
• Output power: 5 mW with an 8 Ω load.
• When headphones are connected, the internal speaker
or connected external speaker does not function.
r ELECTRONIC KEYER JACK [ELEC-KEY] (p. 14)
Accepts a paddle to activate the internal electronic
keyer for CW operation.
• Selection between the internal electronic keyer, bug-key
and straight key operation can be made in keyer set
mode. (p. 34)
• A straight key jack is separately available on the rear
panel. See [KEY] on p. 7.
• Keyer polarity (dot and dash) can be reversed in keyer
set mode. (p. 34)
• 4-channel memory keyer is available for your conve-
nience. (p. 30)
1
! 7 ! 6 ! 5 ! 4 ! 3 ! 2
i746PRO
TUNER ANT
POWER
NR NOTCH
TRANSMIT
PHONES
A
NR /NOTCH
ELEC-KEY AF
RF/SQL
MIC
MENU
MIC GAIN RF PWR CW PITCH
y u i o ! 0
(dot)
(com)
(dash)
HF/VHF TRANSCEIVER
F 1 F 2 F 3 F 4
SSB CW/RTTY AM/FM FILTER
KEY SPEED P.AMP/ATT NB VOX/BK-IN MONITOR
! 1
t MICROPHONE CONNECTOR [MIC]
Accepts the supplied or optional microphone.
• See p. 100 for appropriate microphones.
• See p. 12 for microphone connector information.
y RF GAIN CONTROL/SQUELCH CONTROL
[RF/SQL] (outer control)
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 1 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 set
mode as follows. (p. 81)
MODE
AUTO
SSB, CW
RF GAIN
RTTY
AM, FM SQL
• When setting as RF gain/squelch control
Noise squelch (FM mode)
Squelch is
open.
RF gain
adjustable
range
1 2 3
1.8 3.5 7
F-INP
4 5 6
10 14 18
21 7 24 8 28 9
SPLIT
50 0 144 ENT
GENE A /B
MP-W MP-R
TX RX
XFC
F 5
CALL
SET MODE SETTING
SQL RF GAIN + SQL
SQL RF GAIN + SQL
SQL RF GAIN + SQL
Recommended level
Maximum
RF gain
S-meter
squelch
TS
LOCK
LOCK/
SPCH