IC-746

This information is taken directly off of the ICOM IC-746 brochure.

　

　

SPECIFICATIONS

GENERAL

Frequency Coverage:
Receive: 0.030 - 60.000 MHz*1
Transmit:
1.800 - 1.999 MHz*2
3.500 - 3.999 MHz*2
7.000 - 7.300 MHz*2
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*2
144.000 - 148.000 MHz*2
*1 Except for some frequency ranges
*2 Depending on version

Mode: USB, LSB, CW, RTTY, AM, FM
Number of Memory Channels: 102 (99 regular, 2 scan edges and 1 call)
Antenna Connector: SO-239x3 [2 for HF + 1 for 144 MHz bands; 50]
Usable Temperature 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, the rate of stablity change is less than ±1 ppm at +25°C; +77°F. Temperature fluctuations 0 °C to +50°C (+32°F to + 122°F) less than ±5 ppm.
Power Supply Requirement: 13.8 V DC (±15% negative ground)
Current Drain (at 13.8 V DC): Transmit max. power: 20A
Receive standby: 2.5A
max. audio: 2.7A
Dimensions (approx): 287(W) x 120(H) x 316.5(D) mm, 11.3(W) x 4.75(H) x 12.5(D) in (projections not included)
Weight (approx): 8.9 kg; 19.625 lb.

　

　

Transmitter

Output Power:
SSB/CW/RTTY/FM: 5-100 W
AM: 2-40 W
Modulation System:
SSB, AM: Balanced modulation
FM: Variable reactance modulation
Spurious Emissions: -50 dB (HF), -60 dB(50/144MHz)
Carrier Supression: More than 40 dB
Unwanted Sideband Supression: More than 50 dB
Delta TX Variable Range: ±9.999 kHz
Microphone Connector: 8-pin connector (600 )

　

　

Receiver

Sensitivity:
SSB, CW, RTTY (10 dB S/N):
0.16 µV (1.8-29.99 MHz)*1
0.13 µV (50MHz)*2
0.11 µV (144 MHz)*3
AM (10 dB SINAD):
13 µV (0.5-1.799 MHz)
2.0 µV (1.80-29.99 MHz)*1
1.0 µV (50/144 MHz)*2,3
FM (12 dB SINAD):
0.5 µV (28.0-29.99 MHz)
0.25 µV (50 MHz)*2
0.18 µV (144 MHz)*3
*1 Pre-amp 1 ON, *2Pre-amp 2 ON, *3Pre-amp ON
Squelch Sensitivity:
USB,LSB,CW, RTTY - Less than 5.6 µV
FM - Less than 1.0 µV
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 kHz/-40 dB
FM - More than 12 kHz/-6 dB ; Less than 30 kHz/-50 dB
Spurious and Image Rejection Ratio: More than 70 dB (except IF through in 50 MHz band)
RIT Variable Range: ±9.999 kHz
Audio Output Power (at 13.8 V DC): More than 2.0 W at 10% distortion with an 8 load

All specifications and options subject to change without notice or obligation.

　

　

SUPPLIED ACCESSORIES

Hand microphone
Spare fuses
Key plug
DC power cable

　

　

OPTIONS

Automatic Antenna Tuners, Antenna Element and Antenna Selector

AH-4 HF + 50 MHz AUTOMATIC ANTENNA TUNER: Covers 3.5 - 54 MHz with a 7 m (23 ft) or longer wire antenna
AH-2b Antenna Element: A 2.5 m long antenna for mobile operation with the AH-3. All bands between 7 - 54 MHz can be matched.
EX-627 AUTOMATIC ANTENNA SELECTOR: For up to 9 separate antenna connections.

DC Power Supplies

PS-85 DC POWER SUPPLY: Output: 13.8 V DC (20 A max.)

External Speakers

SP-21 EXTERNAL SPEAKER: Designed for base station operation. Input impedance: 8 ; Max input power: 5 W

Microphones

SM-8 DESKTOP MICROPHONE: Electret condenser-type desktop microphone including 2 connection cables for simultaneous connection of 2 transceivers. [Up/Down] switches are included.
SM-20 DESKTOP MICROPHONE: Unidirectional, electret microphone for base station operation. Includes [Up]/[Down] switches and a low cut function.
HM-36 HAND MICROPHONE: Same as supplied.

Internal Units and Filters

FL-100, FL-101, FL-103, FL-223, and FL-232 9 MHz FILTERS: Have good shape factor and provide you with better reception.
FL-100: 500 Hz/-6 dB (CW/RTTY narrow)
FL-101: 250 Hz/-6 dB (CW narrow)
FL-103 2.8 kHz/-6 dB (SSB wide)
FL-223: 1.9 kHz/-6 dB (SSB narrow)
FL-232: 350 kHz/-6 db (RTTY, CW narrow)

FL-52A, FL-53A, FL-96, FL-222, and FL-257 455 kHz FILTERS: Have good shape factor and provide you with better reception.
FL-52A: 500 Hz/-6 dB (CW/RTTY narrow)
FL-53A: 250 Hz/-6 dB (CW narrow)
FL-96: 2.8 Hz/-6 dB (SSB wide)
FL-222: 1.8 kHz/-6 dB (SSB narrow)
FL-257: 3.3 kHz/-6 db (SSB wide)

Others

CT-16 SATELLITE INTERFACE UNIT: Easy tuning when connecting another Icom VHF transceiver for instant satellite communications.
CT-17 CI-V LEVEL CONVERTER: For remote transceiver control using a personal computer. Equipped with an RS-232C port. You can change frequencies, operating mode, memory channels, etc.
UT-102 VOICE SYNTHESIZER UNIT: Announces operating frequency and mode.
CR-282 HIGH-STABILITY CRYSTAL UNIT: Contains a temperature-compensating oven heater and crystal unit for improved frequency stability. Frequency stability: ± 0.5 ppm