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PANEL DESCRIPTION
2001 NEW
■
Front panel
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)
t
MICROPHONE CONNECTOR [MIC]
Accepts the supplied or an optional microphone.
• See p. 101 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. 82)
• When setting as RF gain/squelch control
Recommended level
RF gain
adjustable
range
Maximum
RF gain
S-meter
squelch
Noise squelch (FM mode)
Squelch is
open.
MODE
SSB, CW
RTTY
AM, FM
AUTO
RF GAIN
SQL
SQL
SET MODE SETTING
SQL
SQL
RF GAIN + SQL
RF GAIN + SQL
RF GAIN + SQL
(dot)
(com)
(dash)
POWER
TRANSMIT
PHONES
ELEC-KEY
MIC
NR
A
/NOTCH
TUNER
ANT
HF/VHF TRANSCEIVER
NR
NOTCH
AF
MIC GAIN
RF PWR
CW PITCH
F 1
F 2
F 3
F 4
F 5
XFC
MP-W
GENE
50
0
21
7
24
8
28
9
14
5
10
4
18
6
3.5
2
1.8
1
7
3
144
ENT
MP-R
TX
RX
LOCK
TS
SPLIT
F-INP
A /B
KEY SPEED
P.AMP/ATT
NB
VOX/BK-IN
MONITOR
CALL
LOCK/
SPCH
RF/SQL
i746PRO
MENU
SSB
CW/RTTY
AM/FM
FILTER
q
w
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r
t
y u i o
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!1
!4
!5
!6
!7
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IC-746PRO.qxd 02.4.2 11:31 Page 1
Summary of Contents for i746PRO
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