• Country
• United States of America (USA)

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

• Year
• 1937/1938

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 137551

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

• Number of Tubes
• 5

• Valves / Tubes
• 6A8G 6K7G 6R7G 6F6G 5Y4G

• Main principle
• Superheterodyne (common); ZF/IF 470 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)

• Power out
• 3 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 38-93B [Late] - Philco, Philadelphia Stg. Batt

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

• Notes

• There are two versions of the 38-93B tombstone -- an early version with a round dial and the tuning knob in the center of the dial, and a late version with a rectangular dial, with the tuning and volume controls below the dial. The early version has a photofinish front, and the late version has a wood veneered front.
  
  Philco service literature indicates that the 37-93 schematic is to be used for servicing the 38-93 chassis. Thus we may conclude that the two chassis are electrically similar. Note that the chassis for the early and late versions of 38-93B must be mechanically different, since the control locations and tuning mechanism are different.

  Stein "Cathedral & Tombstone Radios" lists this model two times (model "93" with 1 band and model "93B" with 2 bands.

   

• Source of data
• Philco Radio 1928-1942

• Circuit diagram reference
• Rider's Perpetual, Volume 8 = 1937 and before

• Mentioned in
• Machine Age to Jet Age II (page 214.)

• Literature/Schematics (1)
• Philco Wiring Diagrams, Parts Lists, Alignment Data, and Voltage Tables Vol. 2 (1937-38 models)

• Literature/Schematics (2)
• Cathedral & Tombstone Radios (page 194 & page 191.)

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

• Other Models

• Here you find 4063 models, 2220 with images and 3710 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA