• Country
• United States of America (USA)

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

• Year
• 1939/1939

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 51489

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

• Number of Tubes
• 5

• Valves / Tubes
• 7A8 7B7 7C6 35A5 35Z3

• Main principle
• Superheterodyne (common); ZF/IF 470 kHz; 2 AF stage(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• AC/DC-set / 115 Volt

• Material
• Bakelite case

• from Radiomuseum.org
• Model: PT-25 Transitone [1939] - Philco, Philadelphia Stg. Batt

• Shape
• Tablemodel without push buttons, Mantel/Midget/Compact up to 14

• Dimensions (WHD)
• 8.5 x 5.4 x 4 inch / 216 x 137 x 102 mm

• Notes

• The 1939 version of Philco Transitone model PT-25 is marked as code 121 and has horizontal ribs across the speaker grill of its dark brown bakelite cabinet. The version 1940 is marked code 122 and has horizontal sloped louvers across the speaker grill. The same grill has version 1941 with a slightly different scale.

  Models PT-26 are the same but have a Built-In Loop Aerial. Of our knowledge all models PT-25 and PT-26 have dark knobs.

  The versions of PT-27 differ with ivory painted bakelite cabinets and knobs. Models PT-28 are the same but have a Built-In Loop Aerial.

• Price in first year of sale
• 10.00 $

• External source of data
• Ernst Erb

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

• Circuit diagram reference
• Rider's Perpetual, Volume 12 = ca. 1941 and before

• Mentioned in
• The Radio Collector's Directory and Price Guide 1921 - 1965 (Philco Radio 1928-1942, Ramirez)

• Literature/Schematics (1)
• Philco dealers promotion radio sales, 1941

• 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