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IC-821H - VHF/UHF Dual Band Transceiver | Radioaficion Ham Radio

IC-821H - VHF/UHF Dual Band Transceiver

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Icom IC-821H - VHF/UHF Dual Band Satellite Transceiver

Manufactured: Japan, 1996-199x (Discontinued)

Icom IC-821H - VHF/UHF Dual Band Satellite Transceiver

Quick Specs:
VHF/UHF dual band satellite base transceiver
RX: 136-174 MHz, 430-450 MHz
TX: 144-148 MHz, 430-450 MHz
Output power:
VHF: 45 W FM, CW; 35 W SSB
UHF: 40 W FM, CW; 30 W SSB
Modes: CW, SSB, FMReceiver sensitivity:
less than 0.11 µV (SSB, CW for 10 dB S/N), less than 0.18 µV (FM for 12 dB SINAD)


GENERAL
  • Frequency Coverage:
    VHF: 144.00-148.00* MHz (*Receive: 136.00-174.00 MHz; guaranteed: 144.00-148.00 MHz)
    UHF: 430.00-450.00 MHz
  • Mode: SSB, CW, FM
  • Number of memory channels: 160 (80 channels for each band)
  • Antenna connector: VHF: SO-239 (50 ohms); UHF: Type-N (50 ohms)
  • Usable Temperature Range: -10°C to +60°C; +14°F to +140°F
  • Power Supply Requirement: 13.8 V DC ±15% (negative ground)
  • Current Drain (at 13.8 V DC):
    Transmit (max. power): 16.0 A
    Receive (standby): 2.0 A; Receive (max. audio): 2.5 A
  • Dimensions: 241(W) x 94(H) x 239(D) mm, 9.5(W) x 3.7(H) x 9.4(D) in (projections not included)
  • Weight: 5.0 kg; 11.0 lb.

Transmitter

  • Output power (continuously adjustable):
    VHF:
    FM, CW: 6-45 W
    SSB: 6-35 W
    UHF:
    FM, CW: 6-40 W
    SSB: 6-30 W
  • Modulation system:
    SSB: Balanced modulation
    FM: Variable reactance modulation
  • Spurious emissions: Less than -60 dB
  • Carrier suppression: More than 40 dB
  • Unwanted sideband: More than 40 dB
  • Microphone connector: 8-pin connector (600 ohms)

Receiver

  • Receive system:
    VHF:
    SSB/CW: Single conversion superheterodyne
    FM: Double conversion superheterodyne
    UHF:
    SSB/CW: Double conversion superheterodyne
    FM: Triple conversion superheterodyne
  • Intermediate frequencies:
    MAIN band:
    VHF:
    SSB: 1st (10.8500 MHz)
    CW: 1st (10.8491 MHz)
    FM: 1st (10.8500 MHz); 2nd (455 kHz)
    UHF:
    SSB: 1st (71.2500 MHz); 2nd (10.8500 MHz)
    CW: 1st (71.2491 MHz); 2nd (10.8491 MHz)
    FM: 1st (71.2500 MHz); 2nd (10.8500 MHz); 3rd (455 kHz)
    SUB band:
    VHF:
    SSB: 1st (10.9500 MHz)
    CW: 1st (10.9491 MHz)
    FM: 1st (10.9500 MHz); 2nd (455 kHz)
    UHF:
    SSB: 1st (71.3500 MHz); 2nd (10.9500 MHz)
    CW: 1st (71.3491 MHz); 2nd (10.9491 MHz)
    FM: 1st (71.3500 MHz); 2nd (10.9500 MHz); 3rd (455 kHz)
  • Sensitivity:
    SSB, CW (10 dB S/N): Less than 0.11 µV
    FM (12 dB SINAD): Less than 0.18 µV
  • Squelch sensitivity (both VHF and UHF bands):
    SSB, CW:
    Threshold: Less than 1.0 µV
    Tight: 3.2 mV
    FM:
    Threshold: Less than 0.10 µV
    Tight: 3.2 mV
  • Selectivity:
    SSB, CW: More than 2.3 kHz/-6 dB ; Less than 4.2 kHz/-60 dB
    FM: More than 15.0 kHz/-6 dB ; Less than 30.0 kHz/-60 dB
  • Spurious and image rejection ratio: More than 60 dB
  • Audio output power (at 13.8 V DC): More than 2.0 W at 10% distortion with an 8 ohm load
  • RIT variable range:
    SSB, CW: More than ±1.0 kHz
    FM: More than ±5.0 kHz
  • External speaker connector: 2-conductor 3.5 mm (1/8") 8 ohms connector x 2 (for MAIN and SUB bands)

IC-821H OPTIONS

Preamplifiers

  • AG-25/AG-35 WATERPROOF PREAMPLIFIERS: External all-weather, mast-mounting preamplifiers for compensating for coaxial cable loss. AG-23 for VHF; AG-35 for UHF.

DC Power Supplies

  • IC-PS30 DC POWER SUPPLY: A system power supply. Equipped with 1 DC power cable and 3 output connectors. (13.8 V DC/25A)
  • PS-85 DC POWER SUPPLY: Style and size are matched to the IC-820H. (13.8 V DC/20 A)

Internal Units and Filters

  • CR-293 HIGH-STABILITY CRYSTAL UNIT: Frequency stability: ±0.5 ppm (-10°C to +60°C)
  • FL-132/FL-133 CW NARROW FILTERS: FL-132 is for the main band; FL-133 is for the sub band and satellite operation. Center frequency: 10.8491 MHz (FL-132); 10.9491 MHz (FL-133). Passband width: 500 Hz/-6 dB
  • UI-102 VOICE SYNTHESIZER UNIT: Provides audible confirmation of an accessed band's frequency, mode, etc. with a clear, electronically-generated voice.
  • UT-84 TONE SQUELCH UNIT: Provides tone squelch and tone scan functions. One unit can be used for both bands simultaneously.

Microphones

  • HM-12 HAND MICROPHONE
  • HM-14 DTMF HAND MICROPHONE
  • SM-20 DESKTOP MICROPHONE

External Speakers

  • IC-SP3 EXTERNAL SPEAKER (8 ohms/4 W)
  • SP-7 EXTERNAL SPEAKER (8 ohms/5 W)
  • SP-20 EXTERNAL SPEAKER (8 ohms/5 W)
  • SP-21 EXTERNAL SPEAKER (8 ohms/5 W)

Others

  • CT-17 CI-V LEVEL CONVERTER
  • IC-MB5 MOBILE MOUNTING BRACKET
  • MB-23 CARRYING HANDLE

Related documents:

Icom IC-821H User Manual

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