• Country
• United States of America (USA)

• Manufacturer / Brand
• DeForest Radio Telephone & Telegraph Co. (De Forest); New York

• Year
• 1924 ?

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 213157

• • alternative name: Lee De Forest Mfg.

• Main principle
• Crystal or Solid State Detector

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Various materials

• from Radiomuseum.org
• Model: D-101b DeForest Crystal Detector , Horizontal Orientation - DeForest Radio Telephone &

• Dimensions (WHD)
• 2 x 2.5 x 0.375 inch / 51 x 64 x 10 mm

• Notes
• There are three different right side metal caps (on the right side of the glass enclosure), known to be on DeForest Detectors. Two are shown in Sievers "Crystal Clear:.." book. One is verified by the DeForest Catalog above. The third is shown above and also appears on a DeForest DT600 Crystal Radio.

• Source of data
• - - Manufacturers Literature

• Author
• Model page created by Michael DeFazio Sr.. See "Data change" for further contributors.

• Other Models

• Here you find 158 models, 132 with images and 16 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from DeForest Radio Telephone & Telegraph Co. (De Forest); New York