• Country
• United States of America (USA)

• Manufacturer / Brand
• Colonial Radio Co.; Long Island and Buffalo, NY

• Year
• 1933

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 35531

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

• Number of Tubes
• 5

• Valves / Tubes
• 6A7 6B7 77 43 25Z5

• Main principle
• Superheterodyne (common); ZF/IF 175 kHz

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast only (MW).

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

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

• Material
• Bakelite or Plastics (type unknown)

• from Radiomuseum.org
• Model: 300 - Colonial Radio Co.; Long

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

• Notes
• Switch for AC or DC operation; the +B voltage is doubled in AC operation; 154 Ohm resistance line cord.

• External source of data
• Ernst Erb

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

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

• Mentioned in
• The Radio Collector's Directory and Price Guide 1921 - 1965

• Literature/Schematics (1)
• Table Top Radios Vol. 1 Stein 98 (page 49.)

• Other Models

• Here you find 165 models, 74 with images and 131 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Colonial Radio Co.; Long Island and Buffalo, NY