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IC-475H - 440 MHz Base Transceiver | Radioaficion Ham Radio

IC-475H - 440 MHz Base Transceiver

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ICOM IC-475H - 440 MHz Base Transceiver

Manufactured: Japan, 1987-199x (Discontinued)

Quick Specs
440 MHz base transceiver
RX: 430-450 MHz
TX: 430-450 MHz
Output power: 75 W
Modes: FM, SSB, CW
Receiver sensitivity: 0.1 µV (CW, SSB for 10 dB S/N), 0.18 µV (FM, 12 dB SINAD)

Detailed Specifications

GENERAL

  • Frequency Coverage: 430.0000~450.0000 MHz
  • Number of memory channels:
    99 memory channels
    1 call channel
    2 scan edge channels
  • Antenna impedance: 50 ohms (unbalanced)
  • Frequency stability: ±5 ppm (0°C to +50°C; +32°F to +122°F)
  • Power Supply Requirement: 13.8 V DC ±15%
  • Current Drain (at 13.8 V DC):
    Transmit (at max. output): approx. 20 A
    Receive (squelched): approx. 1.1 A
    Receive (max. audio output): 1.3 A
  • Usable Temperature Range: -10°C to +60°C; +14°F to +140°F
  • Dimensions (projections not included): 241(W) x 95(H) x 239(D) mm, 9.5(W) x 3.7(H) x 9.4(D) in
  • Weight: 6.0 kg; 13.2 lb.

Transmitter

  • Emission modes: FM (F3), SSB (A3J), CW (A1)
  • RF output power: 10~75 W (continuously adjustable)
  • Modulation system:
    SSB: Balanced modulation
    FM: Variable reactance frequency modulation
  • Maximum frequency deviation: ±5 kHz (FM mode)
  • Spurious emissions: More than 60 dB below peak output power
  • Carrier suppression: More than 40 dB below peak output power
  • Unwanted sideband: More than 40 dB below peak output power
  • Microphone impedance: 600 ohms

Receiver

  • Receive system:
    SSB, CW: Quadruple conversion superheterodyne
    FM: Triple conversion superheterodyne
  • Intermediate frequencies:
    1st: 70.4515 MHz (SSB, FM); 70.4506 MHz (CW)
    2nd: 9.0115 MHz (SSB, FM); 9.0106 MHz (CW)
    3rd: 455 kHz (all modes)
    4th: 9.0115 MHz (SSB, FM); 9.0106 MHz (CW)
  • Sensitivity:
    SSB, CW: Less than 0.1 µV for 10 dB S/N
    FM: Less than 0.18 µV for 12 dB SINAD
  • Squelch sensitivity:
    FM: Less than 0.14 µV
    SSB: Less than 0.56 µV
  • Selectivity:
    SSB, CW: 2.3 kHz/-6 dB ; 4.0 kHz/-60 dB
    FM: 15.0 kHz/-6 dB ; 30.0 kHz/-60 dB
  • Spurious and image rejection response: More than 70 dB
  • Audio output power: More than 2 W at 10% distortion with an 8 ohm load
  • RIT variable range: ±9.99 kHz

IC-475H Options

  • PS-55 DC POWER SUPPLY: 13.8 V DC, 20 A
  • IC-PS30 DC POWER SUPPLY: 13.8 V DC, 25 A
  • IC-SP3 EXTERNAL SPEAKER: 8 ohms, 4 W
  • SP-7 EXTERNAL SPEAKER: 8 ohms, 5 W
  • SP-20 EXTERNAL SPEAKER 8 ohms, 5 W
  • SM-6 DESKTOP MICROPHONE
  • SM-8 DESKTOP MICROPHONE
  • SM-20 DESKTOP MICROPHONE
  • AG-25 WEATHERPROOF 144 MHz PREAMPLIFIER
  • GC-5 WORLD CLOCK
  • UT-36 VOICE SYNTHESIZER UNIT
  • UT-34 TONE SQUELCH UNIT
  • FL-32A CW NARROW FILTER: 500 Hz/-6 dB
  • CR-64 HIGH-STABILITY CRYSTAL UNIT
  • CT-16 SATELLITE INTERFACE UNIT
  • CT-17 CI-V LEVEL CONVERTER
  • IC-MB5 MOBILE MOUNTING BRACKET
  • MB-23 CARRYING HANDLE

IC-475H user manual

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