84B Late

Philco, Philadelphia Stg. Batt. Co.; USA

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  • Year
  • 1936
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 139535

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 460 kHz
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC) / 115 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 84B [Late] - Philco, Philadelphia Stg. Batt
  • Shape
  • Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).
  • Notes
  • Model 84B was the third of a series (models 80B, 81B, and 84B) of low cost 4-tube cathedrals that used a regenerative combined IF/detector stage to maximize sensitivity with very few components.

    The early version (1934) had a round speaker opening with three vertical bars. The middle version (1935) had a lyre-shaped opening with three vertical bars. The late version (1936) had a continuous arch-shape extending upward from the base, and an oval speaker opening with five mostly vertical bars.

    Model 84B continued onward for one more year as model 37-84B, with two more cabinet styles, and a new tube lineup (but still using a similar circuit).
  • Price in first year of sale
  • 20.00 $
  • Circuit diagram reference
  • Rider's Perpetual, Volume 4 = ca. 1934 and before
  • Literature/Schematics (1)
  • Philco 1928-36 Wiring Diagrams, Parts Lists, and Essential Service Data
  • Author
  • Model page created by Thomas Albrecht. See "Data change" for further contributors.

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The model 84B is part of the collections of the following members.

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