38-643X

Philco, Philadelphia Stg. Batt. Co.; USA

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  • Year
  • 1937/1938
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 137616

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

 Technical Specifications

  • Number of Tubes
  • 7
  • Main principle
  • Superhet with RF-stage; ZF/IF 470 kHz
  • Wave bands
  • Broadcast plus more than 2 Short Wave bands.
  • Power type and voltage
  • Storage and/or dry batteries / 135, 90, 2, -3, & -9 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 38-643X - Philco, Philadelphia Stg. Batt
  • Shape
  • Console with any shape - in general
  • Notes
  • The Philco model 38-643 series uses a 7-tube 4-band battery powered chassis with shadow meter (a type of signal strength meter used as a tuning aid). For the filament supply, a 2-volt storage battery may be used, or a dry battery (presumably 3 volts) with a type 1Z1 ballast lamp plugged into a socket on the battery pack. Philco service literature indicates that the schematic for the previous year's 37-643 chassis should be used when servicing the 38-643 chassis.

    There are two models in the series with different cabinet styles: Model 38-643B is a tombstone, and 38-643X is a console.
  • Price in first year of sale
  • 105.00 $
  • Circuit diagram reference
  • Rider's Perpetual, Volume 8 = 1937 and before
  • Literature/Schematics (1)
  • Philco Wiring Diagrams, Parts Lists, Alignment Data, and Voltage Tables Vol. 2 (1937-38 models)
  • Author
  • Model page created by Thomas Albrecht. See "Data change" for further contributors.

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