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Icom IC-746 Pro
Specifications

Return to 746 Pro

Discontinued Amateur Base Transceivers 

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IC-746 Pro Specifications

General
  • Frequency Coverage:
    • Receive:
      • 0.030 - 60.000 MHz
      • 108 - 174 MHz *1*2
    • Transmit:
      •   1.800 -   2.000 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 Some frequency ranges not guaranteed
      • *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/50 and 1 for 144 MHz band, 50 ohm]
  • Usable Temperature Range: -10C to +60C; +14F to +140F
  • Frequency Stability: Less than 7 ppm from 1 min. to 60 min. after power ON. After that, the rate of stability change is less than 1 ppm at +25C; +77F. Temperature fluctuations +32F to + 122F (0 C to +50C) less than 5 ppm.
  • Power Supply Requirement: 13.8 V DC (15% negative ground)
  • Current Drain (at 13.8 V DC): Transmit max. power: 23 A
    • Receive standby: 2.2A
    • Maximum audio: 3.0A
  • Dimensions (approx): 11.3(W) x 4.75(H) x 12.5(D) inches, (287x120x 316.5 mm), (projections not included)
  • Weight (approx): 19.8 lb. (9 kg)

 

Transmitter
  • Output Power:
    • SSB/CW/RTTY/FM: 5-100 W
    • AM: 5-40 W
  • Modulation System:
    • SSB PSN modulation
    • AM low power modulation
    • FM: Phase modulation
  • Spurious Emissions: -50 dB (HF), -60 dB(50/144MHz)
  • Carrier Suppression: More than 40 dB
  • Unwanted Sideband Suppression: More than 55 dB
  • Delta TX Variable Range: 9.99 kHz
  • Microphone Connector: 8-pin connector (600 ohms)

 

Receiver
  • Sensitivity:
    • SSB, CW, RTTY (10 dB S/N):
      • 0.16 V (1.8-29.99 MHz)*1
      • 0.13 V (50 MHz)*2
      • 0.11 V (144 MHz)*3
    • AM (10 dB SINAD):
      • 13 V (0.5-1.799 MHz)
      • 2.0 V (1.80-29.99 MHz)*1
      • 1.0 V (50/144 MHz)*2,3
    • FM (12 dB SINAD):
      • 0.5 V (28.0-29.99 MHz)
      • 0.25 V (50 MHz)*2
      • 0.18 V (144 MHz)*3
    • *1 Pre-amp 1 ON, *2 Pre-amp 2 is ON, *3 Pre-amp ON
  • Squelch Sensitivity:
    • USB, LSB, CW, RTTY - Less than 5.6 V
    • FM - Less than 1.0 V
  • Selectivity: (representative values)
    • SSB - More than 2.4 kHz/-6 dB Less than 3.6 kHz/-60 dB
    • CW - More than 500 Hz/-6 dB Less than 700 Hz/-60 dB
    • RTTY - More than 350 Hz/-6 dB Less than 650 Hz/-60 dB
    • AM - More than 6.0 kHz/-6 dB Less than 15 kHz/-40 dB
    • FM - More than 12 kHz/-6 dB Less than 20 kHz/-50 dB
  • Spurious and Image Rejection Ratio: More than 70 dB (HF and 50 MHz), More than 60 dB (144 MHz) (except IF through in 50 MHz band)
  • RIT Variable Range: 9.99 kHz
  • Audio Output Power (at 13.8 V DC): More than 2.0 W at 10% distortion with an 8 ohm load
  • Specifications are subject to change without notice or obligation.        UR

 


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