• Country
• United States of America (USA)

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

• Year
• 1934

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 133121

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

• Number of Tubes
• 5

• Valves / Tubes
• 15 32 32 30 19

• Main principle
• Superheterodyne (common); ZF/IF 460 kHz

• Wave bands
• Broadcast (MW) and Tropical/Marine/Police Band(s) = 150-200m.

• Power type and voltage
• Dry Batteries / 135, 67.5, 2, -3, & -7 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 38B [Version 2] - Philco, Philadelphia Stg. Batt

• Shape
• Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).

• Dimensions (WHD)
• 315 x 420 x 215 mm / 12.4 x 16.5 x 8.5 inch

• Notes
• The model 38 series are battery operated 2-band sets with a variety of cabinet styles over several years.
  
  There were five versions of the cathedral 38B: Version 1 (1933) has the classic spade-shaped speaker opening used on many Philco cathedral cabinets. Version 2 (1934) has an oval opening with three vertical bars and downward curving additional bars at the bottom. Version 3 (1934-35) has an oval opening with stepped features at the bottom. Version 4 (1935) is similar to version 3, but has a larger escutcheon opening and new dial design. Version 5 (1936) has a cabinet with a continuous arch shape starting from the base and multiple vertical bars in the speaker opening.
  
  The model 38L lowboy has two versions: an early version (1933-34) with four narrow vertical bars at the edges of the speaker opening, along with other embellishment, and a late version (1934-35) with a single vertical bar through the center of the speaker opening, along with other embellishment.
  
  There was also a highboy (1933) and a floor-type console (1935-36).
  
  The chassis had an early version (used for 1933 and early 1934) with a type 15 mixer tube and a later version with type 1A6 mixer (used from mid 1934 onward). Chassis marked as model 38 have no ballast tube and are designed for use with a 2 volt storage battery for filaments. Those marked 38A have a ballast tube (type 6 early; type 1A1 late) and are designed for a dry battery (presumably 3 volts?) for the filament supply.
  
  Two Philco schematics are available: code 121 with type 15 mixer (also found in Rider vol 4) and code 123 with 1A6 mixer.

• Net weight (2.2 lb = 1 kg)
• 5.7 kg / 12 lb 8.9 oz (12.555 lb)

• Price in first year of sale
• 45.00 $

• Source of data
• Philco Radio 1928-1942

• Circuit diagram reference
• Rider's Perpetual, Volume 4 = ca. 1934 and before

• Mentioned in
• Machine Age to Jet Age II (page 212.)

• Literature/Schematics (1)
• Philco 1928-36 Wiring Diagrams, Parts Lists, and Essential Service Data

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• Other Models

• Here you find 4041 models, 2217 with images and 3690 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA