![background image](http://html2.mh-extra.com/html/icom/ic-746/ic-746_instruction-manual_4128831086.webp)
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, RTTY More 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, RTTY Less 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
q
w
e
r
t
Summary of Contents for IC-746
Page 90: ......