![background image](http://html.mh-extra.com/html/icom/ic-703/ic-703_instruction-manual_612184105.webp)
16
90
SPECIFICATIONS
■
General
• Frequency coverage : Receive
30 kHz – 60.00000 MHz*
Transmit
1.800 –
1.99999 MHz*
3.500 –
3.9999 MHz*
7.000 –
7.300 MHz*
10.100 – 10.150 MHz
14.000 – 14.350 MHz
18.068 – 18.168 MHz
21.000 – 21.450 MHz
24.890 – 24.990 MHz
28.000 – 29.700 MHz
50.000 – 54.000 MHz*
*Depending on version.
• Mode
: SSB, CW, AM, FM, RTTY
• Number of memory
: 105
(split memory: 99; scan edges: 6)
channels
• Antenna connector
: SO-239 /50
Ω
• Usable temperature : –10°C to +60°C (+14°F to +140°F)
range
• Frequency stability
: Less than ± 0.5 ppm
(0°C to + 50°C; + 32°F to +122°F).
• Power supply
: 9–15.87 V DC (negative ground)
requirement
• Current drain
:
Transmit
2.0 A typ.
(TX 5 W at 9.6 V DC)
3.0 A typ.
(TX 10 W at 13.8 V DC)
Receive squelched
300 mA typ.
(at 9.6 V DC)
max. audio
450 mA typ.
(at 9.6 V DC)
1.2 A
(at 13.8V DC)
• Dimensions
: 167(W)
×
58(H)
×
200(D) mm,
(projections not included)
6
9
⁄
16
(W)
×
2
5
⁄
16
(H)
×
7
7
⁄
8
(D) in
• Weight
: 2.0 kg (4 lb 4 oz)
• CI-V connector
: 2-conductor 3.5 (d) mm (
1
⁄
8
˝)
• ACC connector
: 13-pin
■
Transmitter
• Output power
:
SSB, CW, FM, RTTY 0.1–5 W
(at 9.6 V DC)
0.1–10 W
(at 13.8 V DC)
AM
0.1–2 W
(at 9.6 V DC)
0.1–4 W
(at 13.8 V DC)
• Modulation system
:
SSB
Balanced modulation
AM
Low level modulation
FM
Variable reactance modulation
• Spurious emissions
: Less than – 60 dB*
*spurious freq.: below 30 MHz: –50 dB; above 50 MHz: –60 dB
• Carrier suppression : More than 40 dB
• Unwanted sideband : More than 50 dB
• Microphone
: 8-pin modular jack (600
Ω
)
connector
• KEY connector
: 3-conductor 6.35 (d) mm (
1
⁄
4
")
■
Receiver
• Receive system
: Double-conversion superheterodyne
• Intermediate frequencies:
1st
64.455 MHz
2nd
455 kHz
• Sensitivity
at pre-amp ON (typical)
:
• Squelch sensitivity
(threshold; preamp ON)
:
SSB/CW/RTTY/AM
Less than 5.6
µV
FM
Less than 0.32
µV
• Selectivity*
(typical)
:
SSB/CW
More than 2.4 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/–50 dB
FM
More than 15.0 kHz/–6 dB
Less than 30.0 kHz/–50 dB
*Without optional filter and with mid
band selected.
• Spurious and image rejection ratio:
HF bands
More than 70 dB
50 MHz band
More than 65 dB
(except IF through)
• Audio output power
: More than 0.5 W
at 10% distortion
with an 8
Ω
load (at 9.6 V DC)
More than 1.0 W
at 10% distortion
with an 8
Ω
load (at 13.8 V DC)
• RIT variable range
: ±9.99 kHz max.
• PHONES connector : 3-conductor 3.5 (d) mm (
1
⁄
8
˝)/8
Ω
• EXT SP connector
: 2-conductor 3.5 (d) mm (
1
⁄
8
˝)/8
Ω
■
Antenna tuner
• Matching impedance range:
HF bands
16.7 to 150
Ω
unbalanced
(Less than VSWR 3:1)
50 MHz band
20 to 125
Ω
unbalanced
(Less than VSWR 2.5:1)
• Tuning accuracy
: VSWR 1.5:1 or less
• Insertion loss
: Less than 1.0 dB
(after tuning)
Frequency
range
SSB/CW/RTTY
10 dB S/N
AM
10 dB S/N
FM
12 dB SINAD
0.5–1.8 MHz
—
13 µV
—
1.8–28 MHz
0.16 µV
2.0 µV
—
28–29.7 MHz
0.5 µV
50–54 MHz
0.13 µV
1.0 µV
0.25 µV
15
16