• Country
• United States of America (USA)

• Manufacturer / Brand
• Philco, Philadelphia Stg. Batt. Co.; USA

• Year
• 1936/1937

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 137708

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

• Number of Tubes
• 6

• Valves / Tubes
• 6K7G 6A8G 6K7G 6Q7G 6F6G 5Y4G

• Main principle
• Superhet with RF-stage; ZF/IF 470 kHz

• Tuned circuits
• 7 AM circuit(s)

• 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
• 3 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 37-620B - Philco, Philadelphia Stg. Batt

• Shape
• Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

• Notes

• The Philco model 37-620 series (1936-37) is the follow-on to the earlier model 620 series (1935-36). Like the 620 series, the 37-620 series has a 6-tube 3-band chassis, but is updated with octal tubes. Band coverage is BC, 2.3-7.4 MHz, and 7.35-22 MHz. There are two versions of the chassis, marked with code 121 and code 125, with minor circuitry differences between the two (see schematics).
  
  There are four models in the series with different cabinet styles. Model 37-620B is a tombstone with a slightly trapezoidal profile and rounded top corners.
  ,br/> Model 37-620J is a floor-type console, also with a slightly trapezoidal profile, and three vertical bars in front of the speaker.
  
  Model 37-611K has vertical and diagonal bars in the speaker opening, in a pattern reminiscent of the feathers and shaft of an arrow pointing downward.
  
  Model 37-620CS is Philco's only chairside radio for the 1937 model year. This model has the controls and dial in a recessed area on the top surface of the cabinet.

  Stein mentions this model as a  two bands radio.

• Price in first year of sale
• 53.00 $

• Circuit diagram reference
• Rider's Perpetual, Volume 7 = 1936 and before

• Mentioned in
• Philco Radio 1928-1942

• Literature/Schematics (1)
• Philco Service Bulletins # 250 and # 251A

• Literature/Schematics (2)
• Cathedral & Tombstone Radios (page 196.)

• Literature/Schematics (3)
• Philco Folder No. PR-430 for 1937.

• Author
• Model page created by Thomas Albrecht. See "Data change" for further contributors.

• Other Models

• Here you find 4006 models, 2205 with images and 3656 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA