• Country
• United States of America (USA)

• Manufacturer / Brand
• Webster Co., The, Webster-Chicago, Webcor; Chicago (IL)

• Year
• 1937

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 168812

• • Brand: Webcor

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

• Number of Tubes
• 3

• Valves / Tubes
• 6J7 25L6 25Z6

• Main principle
• Audio-Amplification

• Wave bands
• - without

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

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• from Radiomuseum.org
• Model: Communication System OC-4 - Webster Co., The, Webster-

• Notes
• Inter-Office Communication System.

• Circuit diagram reference
• Rider's Perpetual, Volume 8 = 1937 and before

• Author
• Model page created by Hans-Joachim Korn † 16.11.15. See "Data change" for further contributors.

• Other Models

• Here you find 440 models, 208 with images and 363 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Webster Co., The, Webster-Chicago, Webcor; Chicago (IL)