Philco 39-70 (modified for AC)

Homebrew - ORIGINAL, USA

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  • Year
  • 1939 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 332256

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • TRF with regeneration; ZF/IF 470 kHz; 2 AF stage(s)
  • Tuned circuits
  • 5 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC) / 105-115 Volt
  • Loudspeaker
  • Presumably Dynamic Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Philco 39-70 - Homebrew - ORIGINAL, USA
  • Shape
  • Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.
  • Dimensions (WHD)
  • 11.8 x 14.2 x 6.7 inch / 300 x 361 x 170 mm
  • Notes

  • This Philco Model 39-70 has been modified to be powered on 105-115 Volts AC soon after it was purchased by original buyer in 1939 or soon after.  The technican did an excellant job.  A resistance Line cord (330 Ohms) was used. All four tubes were replaced for this AC powered modification. 

    See original model 39-70B.

  • Net weight (2.2 lb = 1 kg)
  • 7 lb 15 oz (7.938 lb) / 3.604 kg
  • Literature/Schematics (1)
  • -- Schematic (Hand drawn)
  • Author
  • Model page created by Andrew Hulsey. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Philco 39-70 (modified for AC) is part of the collections of the following members.

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