Specifications; I General; I Transmitter; I Receiver - Icom IC-703 Instruction Manual

I General

• Frequency coverage : Receive
30 kHz – 60.00000 MHz*
Transmit
1.800 –
3.500 –
7.000 –
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
channels
: SO-239 /50 Ω
• Antenna connector
• 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.
3.0 A typ.
Receive squelched 300 mA typ.
max. audio 450 mA typ.
1.2 A
• Dimensions : 167(W)
9
6 ⁄
(projections not included)
16
• Weight : 2.0 kg (4 lb 4 oz)
• CI-V connector : 2-conductor 3.5 (d) mm (
• ACC connector : 13-pin

I Transmitter

• Output power :
SSB, CW, FM, RTTY 0.1–5 W
0.1–10 W
AM 0.1–2 W
0.1–4 W
• 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
: 8-pin modular jack (600 Ω)
• Microphone
connector
• KEY connector : 3-conductor 6.35 (d) mm (
1.99999 MHz*
3.9999 MHz*
7.300 MHz*
(split memory: 99; scan edges: 6)
(TX 5 W at 9.6 V DC)
(TX 10 W at 13.8 V DC)
(at 9.6 V DC)
(at 9.6 V DC)
(at 13.8V DC)
× ×
58(H) 200(D) mm,
× ×
5 7
(W) 2 ⁄ (H) 7 ⁄ (D) in
16 8
1
⁄ ˝)
8
(at 9.6 V DC)
(at 13.8 V DC)
(at 9.6 V DC)
(at 13.8 V DC)
1
⁄ ")
4

SPECIFICATIONS

I Receiver

• Receive system : Double-conversion superheterodyne
• Intermediate frequencies:
1st 64.455 MHz
2nd 455 kHz
• Sensitivity
at pre-amp ON (typical)
Frequency SSB/CW/RTTY
range
10 dB S/N
0.5–1.8 MHz —
1.8–28 MHz
0.16 µV
28–29.7 MHz
50–54 MHz 0.13 µV
• Squelch sensitivity
(threshold; preamp ON)
SSB/CW/RTTY/AM Less than 5.6
FM Less than 0.32
• 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
• Audio output power : More than 0.5 W
with an 8 Ω load (at 9.6 V DC)
More than 1.0 W
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 (
• EXT SP connector : 2-conductor 3.5 (d) mm (

I Antenna tuner

• Matching impedance range:
16.7 to 150 Ω unbalanced
HF bands
(Less than VSWR 3:1)
20 to 125 Ω unbalanced
50 MHz band
(Less than VSWR 2.5:1)
• Tuning accuracy : VSWR 1.5:1 or less
• Insertion loss : Less than 1.0 dB
16
:
AM FM
10 dB S/N 12 dB SINAD
13 µV —
—
2.0 µV
0.5 µV
1.0 µV 0.25 µV
:
µV
µV
(except IF through)
at 10% distortion
at 10% distortion
˝)/8 Ω
1
⁄
8
˝)/8 Ω
1
⁄
8
(after tuning)
15
16
90