• Country
• United States of America (USA)

• Manufacturer / Brand
• Cockaday, L. M. & Co.; New York City

• Year
• 1920

• Category
• Radio module pre 1926 (not a part, not a key)

• Radiomuseum.org ID
• 195175

• Number of Tubes
• 2

• Valves / Tubes
• UV200 UV201

• Main principle
• Detector with Vacuum Tube (Valve), no tuner; 1 AF stage(s)

• Wave bands
• - without

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Detector and Single Stage Amplifier DA-1 - Cockaday, L. M. & Co.; New

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Notes
• The Cockaday Amplifier consisted of a vacuum tube detector and one stage of audio amplification in a single cabinet. It touted a new "Filament Temperature Indicator" that was visible on the front panel.

• Price in first year of sale
• 45.00 $

• Literature/Schematics (1)
• December 1920 Radio News advertisement page 401

• Author
• Model page created by Alan Larsen. See "Data change" for further contributors.

• Other Models

• Here you find 2 models, 2 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Cockaday, L. M. & Co.; New York City