MBP99 Early

Ekco, E.K.Cole Ltd.; Southend-on-Sea

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  • Year
  • 1949
perfect model
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 102611

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Superheterodyne (common); ZF/IF 455 or 460 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast, Long Wave and Short Wave.
  • Power type and voltage
  • Line / Batteries (any type) / 200-250 / 7.5 & 90 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm
  • Material
  • Leather / canvas / plastic - over other material
  • from Radiomuseum.org
  • Model: MBP99 [Early] - Ekco, E.K.Cole Ltd.; Southend-
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 14 x 11.5 x 6.5 inch / 356 x 292 x 165 mm
  • Notes

  • Chassis of MBP99 was revised after 5000th production. Differences on later chassis are a 3rd loop for LW (this version just adds a loading coil to MW loop)  and additional rectifier on mains PSU. Later version also changes the negative feedback from DL94 to DAF91 and uses a DL94 instead of the 3V4 which in the beginning was most probably not yet available.

    Ekco MBP99 (Early chassis version);
    Short 19.3-51.8m (5791-15.544 KHz),
    Medium 194-550 m,
    Long 1000-2000 m, built-in frame aerial, smart gray Lizard finish.

    Trader 968 covers this and later version. States June 1949 release.

    Price excluded Purchase Tax.

    Batteries:

    • LT 7.5V Ever Ready AD31 or Vidor L5042 (about 120 hours)
    • HT 90V: Recommeded Vidor L5039 (= Ever Ready Portable 61) (About 240 hours) or Exide/Drydex H1146, but also oddly Ever Ready B107 as HT is two wander plugs and B107 is 3 pin. Trader sheet notes the Ekco warning as to B107 location or battery plug shorts on case!
  • Price in first year of sale
  • 16.40 GBP
  • Author
  • Model page created by Peter Hoddow. See "Data change" for further contributors.

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