Icom IC-746 Instruction Manual

84
15
SPECIFICATIONS AND OPTIONS
All stated specifications are subject to change without notice
or obligation.
15-1 Specifications
GENERAL
• Frequency coverage : Unit: MHz
Receive 0.030– 60.000*
1
108.000– 174.000*
1
Transmit 1.800– 1.999*
2
3.500– 3.999*
2
7.000– 7.300*
2
10.100– 10.150
14.000– 14.350
18.068– 18.168
21.000– 21.450
24.890– 24.990
28.000– 29.700
50.000– 54.000*
2
144.000– 148.000*
2
*
1
Except for some frequency ranges.
*
2
Depending on version.
• Mode : USB, LSB, CW, RTTY, AM,
FM
• No. of memory ch : 102 (99 regular, 2 scan edges
and 1 call)
• Antenna connector : SO-239×3 (2 for HF/50 MHz
and 1 for 144 MHz; 50 Ω)
• Usable temp. range : –10°C to 60°C (14°F to 140°F)
• Frequency stability : Less than ±7 ppm from 1 min.
to 60 min. after power on.
After that, rate of stability is
less than ±1 ppm/hr. at +25°C
(+77°F). Temperature fluctua-
tions 0°C to +50°C (+20°F to
+122°F) less than ±5 ppm.
• Frequency resolution : 1 Hz
• Power supply 13.8 V DC±15%
(negative ground)
requirement
• Current drain :
Transmit max. power 20.0 A
Receive standby 1.8 A
max. audio 2.0 A
• Dimensions : 287(W)×120(H)×316.5(D) mm
11
5
⁄16(W)×4
23
⁄32(H)×12
15
⁄32(D) in
• Weight : 8.9 kg; 19 lb 10 oz
• CI-V connector : 2-conductor 3.5 (d) mm (
1
⁄8")
TRANSMITTER
• Output power :
USB, LSB, FM 5–100 W
AM 5–40 W
• Modulation system :
USB, LSB, AM Balanced modulation
FM Variable reactance modulation
• Spurious emissions : Less than –50 dB (HF)
Less than –60 dB (50/144 MHz )
• Carrier suppression : 40 dB
• Unwanted sideband : 50 dB
• :TX variable range : ±9.999 kHz
• Mic. connector : 8-pin connector (600 Ω)
RECEIVER
• Sensitivity (typical) :
USB, LSB, AM, RTTY 0.16 µV*
1
(1.8–29.990 MHz)
(10 dB S/N)
0.13 µV*
2
(50 MHz)
0.11 µV*
3
(144 MHz)
AM (10 dB S/N) 13 µV (0.5–1.799 MHz)
2.0 µV*
1
(1.8–29.990 MHz)
1.0 µV*
2
*
3
(50/144 MHz)
FM (12 dB SINAD) 0.5 µV*
1
(28–29.990 MHz)
0.25 µV*
2
(50 MHz)
0.18 µV*
3
(144 MHz)
*
1
Preamp-1 ON, *
2
Preamp-2 ON, *
3
Preamp ON
• Selectivity :
USB, LSB, CW, RTTYMore than 2.1 kHz/–6 dB
Less than 4.0 kHz/–60 dB
AM, FM-N More than 9.0 kHz/–6 dB
Less than 20.0 kHz/–40 dB
FM More than 12 kHz/–6 dB
Less than 30 kHz/–50 dB
• Squelch sensitivity :
USB, LSB, CW, RTTYLess than 5.6 µV
FM Less than 1.0 µV
• Spurious and image rejection ration:
(except IF through on 50 MHz)
More than 70 dB
More than 60 dB (144 MHz)
• RIT variable range : ±9.999 kHz
• Audio output power : More than 2.0 W (at 13.8 V
DC with an 8 Ω load)
SUPPLIED ACCESSORIES
Qty.
➀ DC power cable (OPC-025A) . . . . . . . . . . . . . . . 1
➁ Hand microphone (HM-36) . . . . . . . . . . . . . . . . . 1
➂ Spare fuses (FGB 20A) . . . . . . . . . . . . . . . . . . . . 2
➃ Spare fuses (FGB 5A) . . . . . . . . . . . . . . . . . . . . . 1
➄ CW keyer plug (AP-330) . . . . . . . . . . . . . . . . . . . 1
qwe
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Icom IC-746 Specifications

General

Mode	SSB, CW, RTTY, AM, FM
Receiver Type	Double conversion superheterodyne
Antenna Connector	SO-239
Voltage	13.8 V DC ±15%
Impedance	50 ohms
Output Power	100 W (SSB, CW, FM, RTTY), 40 W (AM)
Current Drain	TX: 20 A
Sensitivity	AM: 2 µV
Selectivity	CW: 500 Hz (-6 dB)