Transceiver IC 21

Icom, Inoue Communication Equipment Corp.; Osaka

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  • Year
  • 1977 ??
  • Category
  • Amateur TRX: Transmitter/Receiver (and Transceiver)
  • Radiomuseum.org ID
  • 337893
    • alternative name: INOUE COMM. E. CORP

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Transistors
  • 46
  • Main principle
  • Transceiver; ZF/IF 10700/455 kHz
  • Wave bands
  • VHF incl. FM and/or UHF (see notes for details)
  • Power type and voltage
  • Line / Batteries (any type) / AC: 117 / DC: 13,5 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Power out
  • 1.5 W (unknown quality)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Transceiver IC 21 - Icom, Inoue Communication
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 230 x 111 x 260 mm / 9.1 x 4.4 x 10.2 inch
  • Notes

  • Transceiver operating in 144 to 148 MHz frequency in FM mode, modulation type F3.
    24 channels. 
    Transmitter:
    RF power output HI 10 Watt, LOW 1 Watt. Maximum frequency deviation adjustable between 3 to 16 kHz. Dynamic microphone with PTT and impedance 10 kΩ.
    Receiver:
    On 24 channels. Double conversion superheterodyne.
    Sensitivity: a) Better than 0.4 µV 20 dB quieting. b) S + N/N at 1 µV input, 30 dB or more.
    Audio output power 1.5 W with 8 Ω impedance. 
    Some little differences from IC 21A.

    46 Transistors (7 FET), 1 IC, 28 Diodes, listed one per type and not all.

  • Net weight (2.2 lb = 1 kg)
  • 6 kg / 13 lb 3.5 oz (13.216 lb)
  • Mentioned in
  • -- Original-techn. papers. (Free original manual service.)
  • Author
  • Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

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