37-640MX

Philco, Philadelphia Stg. Batt. Co.; USA

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  • Year
  • 1936/1937
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 137759

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 2 Short Wave bands.
  • Power type and voltage
  • Alternating Current supply (AC) / 115 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Power out
  • 5 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 37-640MX - Philco, Philadelphia Stg. Batt
  • Shape
  • Console with any shape - in general
  • Notes

  • The Philco model 37-640 series (1936-37) are 7-tube 3-band AC-powered receivers with shadow meter. The chassis is similar in design to its predecessors used in the model 640 series (1935) and 645 series (1936), but with newer octal tubes. Band coverage of 37-640 is 530-1720 kHz (BC), 2.3-7.4 MHz (SW1), and 7.35-22 MHz (SW2).

    There are three specific models in the series with different cabinet styles. Model 37-640B is a tombstone. Model 37-640X is a console with inclined sounding board, with a slightly trapezoidal overall profile. Model 37-640MX is a second console version with inclined sounding board, having a recessed control panel and four vertical slots for the speaker opening.

  • Price in first year of sale
  • 95.00 $
  • Circuit diagram reference
  • Rider's Perpetual, Volume 7 = 1936 and before
  • Literature/Schematics (1)
  • Philco Service Bulletin # 253
  • Literature/Schematics (3)
  • Philco Folder No. PR-430 for 1937.
  • Author
  • Model page created by Thomas Albrecht. See "Data change" for further contributors.

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