Transmitter Drive Unit MA1720

Racal Engineering / Instruments / Electronics Ltd., Bracknell

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  • Year
  • 1977 ??
  • Category
  • Commercial Transmitter (TX not Transceiver)
  • Radiomuseum.org ID
  • 109259

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

 Technical Specifications

  • Number of Transistors
  • 201
  • Semiconductors
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Alternating Current supply (AC) / 200-250 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Transmitter Drive Unit MA1720 - Racal Engineering /
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 483 x 178 x 508 mm / 19 x 7 x 20 inch
  • Notes

  • Covers the frequency range 1 to 29.9999 MHz disposing of 289,999 channels  in 100 Hz steps. The channel frequency has chosen by 6 contraves selectors that set the chosen frequency without the need for further operations.
    Power output can be chenged fro 25 mW to a maximum of 200 W on 50 Ω impedance.
    Modes USB/LSB, AM, ISB, MCW, CW, RTTY. Can be remotely controlled.
    RF Pout 0,2 W ÷ 200 W.
    BF frequency range: 300 to 3,000 Hz.
    The installed instrument can check: Input line level; Amplifier line; RF output voltage and internal power supply.
    MA 1720 can operate on airplanes at a maximum height of 3,000 meters or on ships.
     

  • Net weight (2.2 lb = 1 kg)
  • 19.5 kg / 42 lb 15.2 oz (42.952 lb)
  • Source of data
  • - - Data from my own collection
  • Mentioned in
  • -- Original-techn. papers.
  • Literature/Schematics (1)
  • Radiokit Elettronica, Mar 2003 - Article "RACAL MA 1720" by Umberto Bianchi
  • Author
  • Model page created by Roy Johnson. See "Data change" for further contributors.

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