Constant Square Peak Band-Pass Coil BP5

Varley (Brand) Oliver Pell Controls Ltd; London

Data
Forum
Pictures
Collections

  • Year
  • 1931 ?
  • Category
  • Radio part (not a module) 
  • Radiomuseum.org ID
  • 354607

 Technical Specifications

  • Main principle
  • RF-Circuit or wave trap (separate, can also be an antenna with amp.)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Constant Square Peak Band-Pass Coil BP5 - Varley Brand Oliver Pell
  • Shape
  • Miscellaneous shapes - described under notes.
  • Notes

  • Varley Constant Square Peak Band-Pass Coil - The ideal pre-selective device for any set. Enables programs now swamped by powerful transmissions to be heard and enjoyed.
    Actually, improves the quality of reproduction. Abolishes all interference by medium waves on long waves. Needs no screening. This new Coil combines a negative inductance and capacity coupling, giving a constant square-topped peak and separation of substantially 9 kilocycles over the whole of both wavebands.

    Price 15s.

  • Price in first year of sale
  • 0.75 GB £
  • Mentioned in
  • -- Original prospect or advert (Modern Wireless Aug 1931, Page ii)
  • Author
  • Model page created by Gary Cowans. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum