• Country
• United States of America (USA)

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

• Year
• 1950

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 51013

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

• Number of Tubes
• 4

• Valves / Tubes
• 1R5 1U4 1U5 3V4

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Line / Batteries (any type) / AC/DC 110-120 / 67.5 & 1.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm

• Power out
• 0.15 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 51-631 - Philco, Philadelphia Stg. Batt

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 9.875 x 6.125 x 3.375 inch / 251 x 156 x 86 mm

• Notes
• Selenium Rectifier According to Michael Brian Shiffer's Book, "The Portable Radio In American Life", this is the first portable radio to use a ferrite-rod antenna. Philco called their antenna the Magnecor.

• Net weight (2.2 lb = 1 kg)
• 4 lb (4 lb 0 oz) / 1.816 kg

• External source of data
• Ernst Erb

• Source of data
• Collector's Guide to Antique Radios 4. Edition

• Circuit diagram reference
• Rider's Perpetual, Volume 21, Copyright 1950

• Mentioned in
• The Radio Collector's Directory and Price Guide 1921 - 1965 (Beitman Radio Diagrams 1950)

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 9-50, Set 106, Folder 12)

• Other Models

• Here you find 4033 models, 2216 with images and 3682 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA