Specifications; General; Receiver; Transmitter - Icom IC-703 Service Manual

SECTION 1
I GENERAL
• Frequency coverage :
Receive
Transmit
*Depending on version.
• Mode : USB, LSB, CW, RTTY (FSK), AM, FM
• Number of memory ch. : 105 (99 regular, 6 scan edges)
: SO-239/50 Ω(at antenna tuner off)
• Antenna connector
• Power supply requirement : 13.8 V DC ±15% (negative ground)
• Frequency stability : • Temp. fluctuations 0˚C to +50˚C
• Frequency resolution

: General

• Current consumption :
Transmit
Receive
*
• Usable temperature range : –10˚C to +60˚C (+14˚F to +140˚F)
• Dimensions : 167(W)
(projections not included)
• Weight : 2.0 kg (4 lb 7 oz)
• CI-V connector : 2-conductor 3.5 (d) mm (
• ACC connector : 13-pin
I TRANSMITTER
• Output power :
1.8–50 MHz band
1
* at 13.8 V DC power supply, *
• Modulation system :
SSB
AM
FM
• Spurious emissions :
Below 30 MHz
Above 30 MHz
• Carrier suppression : More than 40 dB
• Unwanted sideband supp. : More than 50 dB
: 8-pin modular jack (600 Ω)
• Microphone connector
• KEY connector : 3-conductor 6.35 (d) mm (
• RTTY connector : 3-conductor 3.5 (d) mm (
All stated specifications are subject to change without notice or obligation.

SPECIFICATIONS

0.030 – 60.000 MHz*
1.800 – 1.999 MHz*
3.500 – 3.999 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*
(+32˚F to +122˚F)
Less than ± 0.5 ppm.
• Temp. fluctuations –10˚C to +60˚C
(+14˚F to +140˚F)
Less than ± 2.5 ppm.
10 kHz shift
Automatic 50 kHz shifit
Fine Less than 2 Hz shift
10 W : 3.0 A (at 13.8 V DC)
5 W : 2.0 A (at 9.6 V DC)
Standby : 300 mA (at 9.6 V DC)
AF output : 450 mA (at 9.6 V DC)*
AF output : 1.2 A (at 13.8 V DC)*
1
with 10 % distortion
✕ ✕
58(H) 200(D) mm
9 ✕ 9 ✕ 7
6 ⁄ (W) 2 ⁄ (H) 7 ⁄ (D) inch
16 32 8
")/8 Ω
1
/
8
SSB/CW/RTTY/FM 0.1–10 W*
0.1–5 W*
AM 0.1–4 W*
0.1–2 W*
2
at 9.6 V DC power supply
Balanced modulation
Low level modulation
Variable reactance modulation
Less than –50 dB
Less than –60 dB
1
/
4
1
/ ")
8
I RECEIVER
• Receive system
• Intermediate frequencies
• Receive sensitivity
FREQUENCY
0.5 – 1.8 MHz
1.8 – 28 MHz*
28 – 29.999 MHz
50 MHz band
Note: SSB, CW and AM modes are measured at 10 dB S/N.
FM mode are measured at 12 dB SINAD.
* 1 Except 4–4.5 MHz, 8–9 MHz. *
• Squelch Sensitivity
AM, SSB, CW, RTTY Less than 5.6 µV
FM
• Selectivity* (Typical)
SSB, CW, RTTY
AM, FM-N
FM
*Without an optional filter unit and with mid bandwidth selected.
• Spurious and image rejection ratio:
HF band
50 MHz band
• Audio output power
1
1
• RIT variable range
• PHONES connector
• EXT SP connector
1
2
1
2
")
1 - 1
: Double superheterodyne
: 1st IF; 64.455 kHz, 2nd IF; 455 kHz
:
SSB/CW/RTTY AM
— 13 µV*
1
0.16 µV 2 µV
0.16 µV 2 µV
0.13 µV 1 µV
2 Pre-amp. is OFF.
: (Pre-amp. is ON.)
Less than 0.32 µV
:
More than 2.4 kHz/–6 dB
Less than 4.0 kHz/–60 dB
More than 9.0 kHz/–6 dB
Less than 20 kHz/–50 dB
More than 15 kHz/–6 dB
Less than 30 kHz/–50 dB
More than 70 dB
More than 65 dB (except IF through)
: More than 1.0 W at 10% distortion
with an 8 Ω load, 13.8 V DC
More than 5.0 W at 10% distortion
with an 8 Ω load, 9.6 V DC
: ± 9.99 kHz
: 3-conductor 3.5 (d) mm (
: 2-conductor 3.5 (d) mm (
(Pre-amp. is ON.)
FM
2
—
—
0.5 µV
0.25 µV
")/8 Ω
1
/
8
")/8 Ω
1
/
8