Kilodyne Four 1934 AC

Eddystone (Brand), Stratton and Co., Ltd., Eddystone Radio Ltd.; Birmingham

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  • Year
  • 1934
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 355248

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • TRF with regeneration; Screengrid 1926-1935
  • Wave bands
  • Broadcast and Short Wave (SW).
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Kilodyne Four 1934 [AC] - Eddystone Brand, Stratton and
  • Shape
  • Chassis only or for «building in»
  • Notes

  • Kilodyne Four 1934 AC-powered, TRF Receiver sold as kit primarily designed for shortwave reception, with optional (2,5" vertical plug-in type) coils also MW.
    Metal chassis with an attached metal front plate.

    The receiver is very similar to the battery model except that provision has been made for fitting A.C. valves with the extra centre terminal and a tapped volume control supplying 15 volts negative bias to the output valve and variable bias from 0-15 volts to the variable-mu S.G. valve. There are also two extra resistances and a Humdinger* for controlling hum. The general mounting of the parts and wiring details are almost identical to those described for the battery model and these should be carefully read.

    There is a slight variation in wiring up the heater leads between the valves, together with leads to the Humdinger should be twisted together which reduces radiation and prevents hum.

    *Humdinger potentiometer acts as a virtual centre tap for non-center-tapped heater transformers, reducing AC hum in the AC valve amplifier.

  • Price in first year of sale
  • 13.00 GB £
  • Mentioned in
  • - - Manufacturers Literature (Eddystone Instruction Book For 1934 Kilodyne Kits)
  • Literature/Schematics (1)
  • -- Original prospect or advert (World Radio Dec 21, 1934, Page 899.)
  • Author
  • Model page created by Gary Cowans. See "Data change" for further contributors.

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