Portotape Mk 2

Portogram Radio Electrical Ind. Ltd.; London

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  • Year
  • 1960 ?
  • Category
  • Sound/Video Recorder and/or Player
  • Radiomuseum.org ID
  • 371084

 Technical Specifications

  • Number of Tubes
  • 6
  • Valves / Tubes
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Tape Recorder
  • Power type and voltage
  • Alternating Current supply (AC) / 240 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical
  • Material
  • Leather / canvas / plastic - over other material
  • from Radiomuseum.org
  • Model: Portotape Mk 2 - Portogram Radio Electrical Ind
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Notes

  • Later, improved version of the Portotape three‑speed dual‑track portable tape recorder, retaining the Collaro Studio deck and the same six‑valve amplifier chassis. Advertised as “Portotape Mk 2” with Top Features & Top Quality.

    T​echnical data:

    Tape deck: Collaro Studio three‑speed
    Tape speed: 7 ½, 3 ¾, 1 ⅞ ips 
    Track format: Dual‑track, reversible
    Bias oscillator: 50 kHz; bias 55 V, erase 30 V
    Inputs: Microphone 3.5 mV, Gram 200 mV, Radio input
    Output: Monitor 0.25 V, Extension speaker
    Output power: ≈ 4 W
    Speaker: Elliptical permanent‑magnet
    Cabinet: Portable suitcase type

    Introduced around 1960). Circuit differences between Portotape and Portotape Mk 2 are not documented; current evidence suggests identical electronics with cosmetic and marketing updates only.

  • Price in first year of sale
  • 40.95 £
  • Mentioned in
  • -- Original prospect or advert (The Gramophone May 1960, p. 60)
  • Author
  • Model page created by Gary Cowans. See "Data change" for further contributors.

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