• Country
• United States of America (USA)

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

• Year
• 1931

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 18808

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

• Number of Tubes
• 5

• Valves / Tubes
• 24 24 24 47 80

• Main principle
• TRF without regeneration; 2 AF stage(s); Screengrid 1926-1935

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 110 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: 50 Baby Grand [Common] - Philco, Philadelphia Stg. Batt

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

• Notes
• Model 50 was Philco's lowest price radio in late 1931, probably the last TRF model offered by Philco. An early version used the classic cathedral cabinet similar to model 70, while the more common version used a much simpler cathedral cabinet with a flat front. A lowboy version was also available. Model 50 is for 115 VAC 50-60 Hz power, and model 50A is for 25-60 Hz.

• Price in first year of sale
• 37.00 $

• External source of data
• E. Erb 3-907007-36-0

• Circuit diagram reference
• Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

• Mentioned in
• Philco Radio 1928-1942

• Literature/Schematics (1)
• Rider's Perpetual, Volume 2 = 1932 and before (Philco Wiring Diagrams, Parts Lists, and Essential Service Data 1928-1936)

• 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