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ICOM IC-703 Plus HF/50MHz All Mode Transceiver

IC-703 Plus, Now in a QRP Version

ICOM IC-703 Plus HF/50MHz All Mode Transceiver

Don't sacrifice big rig features just because you want to operate QRP!

Whether hiking in the mountains or taking a leisurely stroll through the park, the IC-703 is the "Real Deal" HF QRP rig! Built-in is an automatic antenna tuner and DSP*, plus there's a newly designed PA circuit to provide a clean 5W signal with only 9.6V DC. The IC-703 also supports true QRP operation with enhancements of features and components to be very efficient to prolong operation of the battery pack. The optional BP-228 battery pack allows up to 7 hours of operating enjoyment.

IC-703

Designed by hams, for hams! Take your hobby with you into the great outdoors with the LC-156, Icom's Multi-bag '703 carrier. The LC-156 offers plenty of room to store and protect the gear you'll want to bring along for hours of fun operating the bands. It's the perfect way to combine a ham's love for both the hobby and the great outdoors!

DSP Technology

DSP capabilities give you tools to reduce interfering signals, or just to dig weak signals out of the dirt. The noise reduction separates desired signals from noise and reduces the noise components for a clearer received signal, while the auto notch tracks and eliminates interference from a solid tone signal.

* Optional UT-106 required depending on version.

160-6m full coverage internal automatic antenna tuner, and low current PA

PA Unit

While in low current mode, the IC-703 automatically switches to 5W output power (2W AM). While on 13.8V DC, the output switches to 10W (4W AM). Antenna tuner PA unit

Auto power scale meter

Auto power scale meter

Low current mode

IC-703 display backlight

* Tx:Rx:Stand-by =0.5:0.5:9 in SSB mode.

Stay on frequency, indoors or out

Whether safe indoors or exposed to the cold temperatures outdoors, the IC-703 will be right on frequency with the standard ±0.5ppm TCXO.

High sensitivity

The IC-703's receiver performance is in the same class as that of high end base stations: 0.16µV at 10dB S/N for 1.8 to 30MHz bands and 0.13µV for 50MHz at 10dB S/N (in SSB and CW modes).

Remote control head allows for easy operation while outdoors

* 6 9/16×2 9/32×7 7/8 in; 4.4lb

The IC-703 has a built-in CW Memory Keyer with three memory locations and up to 50 characters per memory location.

Other keyer features include a variable CW pitch control (300.900Hz); operation with a bug; iambic paddles; or straight key. All these functions are available even when in low current mode.

Clean FSK, RTTY

Utilizing the TRUE RTTY mode, FSK, the IC-703 generates the tones internally for the cleanest possible signal on the band.

Also, whether operating FSK or AFSK data, you can tweak the IC-703 to be the perfect portable RTTY machine by adding the optional FL-52A filter.

455kHz IF filter selections

The 455kHz IF allows you to upgrade the standard 455kHz filter, FL-65, to improve your selectivity by installing an optional filter into the filter slot.

General
Frequency range
Receive
Transmit

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
ModeUSB, LSB, CW, RTTY, AM, FM
No. of memory channels105 (99 regular, 6 scan edges)
Antenna Impedance50Ω (SO-239)
Power Supply9-15.8V DC
Operating Temperatures-10°C to +60°C; +14°F to +140°F
Frequency stabilityLess than ±0.5ppm (+0°C to +50°C)
Less than ± 2.5ppm (-10°C to +60°C)
Current drain
at 13.8Vat 9.6V
Output PowerSSB/CW/RTTY/FM0.1-10W0.1-5W
AM0.1-4W0.1-2W
TransmitHigh (typical)3.0A
(at 10W)
2.0A
(at 5W)
ReceiveMax. Audio1.2A450mA typ.
Stand-By-300mA typ.
Dimensions
(proj. not incl.)
167 × 58 × 200 mm;
6 9 / 16 (W) × 2 9 / 32 (H) × 7 7 / 8 (D) in
Weight (approx.)2 kg; 4.4 lbs
CI-V connector2-conductor 3.5 (d) mm ( 1 / 8 ")
Transmitter
Modulation System
SSB
AM
FM

Balanced modulation
Low level modulation
Variable reactance modulation
Spurious emissionsLess than -50dB (Below 30 MHz)
Less than -60dB (Above 50 MHz)
Carrier SuppressionMore than 40dB
Unwanted sideband suppressionMore than 50dB
Microphone Connector8-pin modular jack (600Ω)
CW Key Connector3-conductor 6.35 (d) mm ( 1 / 4 ")
Receiver
Receiver systemDouble conversion superheterodyne
Intermediate frequencies 1st
2nd

64.455
0.455 MHz
Sensitivity
SSB / CW / RTTY
(at 10dB S/N)
AM
(at 10dB S/N)
FM
(12dB SINAD)
0.5-1.8 MHz-13µV-
1.8-28 MHz0.16µV *2µV *-
28-29.7 MHz0.5µV *
50 MHz band0.13µV *1µV *0.25µV *
* Pre-amp on
Squelch sensitivity
SSB
FM
(threshold; pre-amp on)
5.6µV typ.
0.32V typ.
Selectivity
SSB, CW (2.4kHz)

AM/FM-N (6kHz)

FM (15kHz)

More than 2.4 kHz/-6dB
Less than 4.0 kHz/-60dB
More than 9.0 kHz/-6dB
Less than 20 kHz/-50dB
More than 15 kHz/-6dB
Less than 30 kHz/-50dB
Spurious Image Rejection
HF bands
50MHz

More than 70dB
More than 65dB (except IF point)
Audio Output Power
(8Ω load, 10% distortion)
More than 1.0W (at 13.8V DC)
More than 0.5W (at 9.6V DC)
RIT Variable Range±9.99kHz
PHONES Connector3-conductor 3.5 (d) mm ( 1 / 8 ")
External SP Connector2-conductor 3.5 (d) mm ( 1 / 8 ")/8Ω
StandardMIL 801 CMIL 810 DMIL 810 EMIL 810 F
MethodProc.MethodProc.MethodProc.MethodProc.
Low Pressure500.1I500.2I, II500.3I, II500.4I, II
High Temp.501.1I501.2I, II501.3I, II501.4I, II
Low Temp.502.1I502.2I, II502.3I, II502.4-3I, II
Temp. Shock503.1I503.2I503.3I503.4I
Solar Radiation505.1I505.2I505.3I505.4I
Rain506.1I506.2I506.3I506.4I
Salt Fog509.1I509.2I509.3I509.4-
Dust510.1I510.2I510.3I510.4I
Vibration514.2VIII, X514.3I514.4I514.5I
Shock516.2I, II, V516.3I, IV516.4I, IV516.5I, IV