All-Mains Four

AER (brand), Aeonic Radio Ltd.; London

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  • Year
  • 1930 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 347882

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • Magnetic loudspeaker (reed) generic.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: All-Mains Four - AER brand, Aeonic Radio Ltd.;
  • Shape
  • Tablemodel, with any shape - general.
  • Notes

  • All-Mains Four.

    The circuit used is of the S.G., detector and two L.F. type, R.C. and transformer coupling being employed in the L.F. stages, and a transformer coupled H.F. stage. Long and medium waves are covered, and a tapped coil and series condenser are in corparated. Separate resistances connected in aech cathode lead to supply bias.

    Valves: M.S.4, M.H.4, M.H.L.4, P.625 (in last stage with separate filament winding on power transíormer) and U9 rectifñer. One choke is connected in the H.T. feed to thc P.625, and two chokes for the other three valves.

    In a walnut cabinet complete with " Blue-Spot" speaker, the set sells at 25 guineas

  • Price in first year of sale
  • 26.25 GBP
  • Mentioned in
  • The Wireless and Gramophone Trader, vol. XXII, 303, June 7th 1930, p.256
  • Author
  • Model page created by Miguel Bravo-Cos. See "Data change" for further contributors.

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