• Country
• United States of America (USA)

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

• Year
• 1935

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 51114

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

• Number of Tubes
• 7

• Valves / Tubes
• 78 6A7 78 85 76 43 43

• Main principle
• Superhet with RF-stage; ZF/IF 460 kHz

• Wave bands
• Broadcast plus 2 Short Wave bands.

• Power type and voltage
• Direct Current supply (DC) / 115 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 641B [Early] - Philco, Philadelphia Stg. Batt

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

• Notes
• The Philco 641 series is based on a 115 V DC-only 7-tube chassis with three band coverage: BC, 2.2-2.6 MHZ, and 5.8-18 MHz.
  
  There are three models with different cabinet styles: The early version (1935) of model 641B is a shouldered tombstone; the late version (1936) of 641B is a tombstone with slightly trapezoidal shape. Model 641X (1935-36) is a floor-type console.

• Price in first year of sale
• 75.00 $

• External source of data
• Ernst Erb

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

• Mentioned in
• Philco Radio 1928-1942

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

• 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