• Country
• United States of America (USA)

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

• Year
• 1922

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 37083

• • alternative name: Lee De Forest Mfg.

• Number of Tubes
• 2

• Valves / Tubes

• Main principle
• Audio-Amplification; 2 AF stage(s)

• Wave bands
• - without

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

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Wooden case, TUBES VISIBLE.

• from Radiomuseum.org
• Model: Radio-Craft Radiophone D-5R - DeForest Radio Telephone &

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

• Notes

• Companion Amp for the RadioCraft D-4T receiver.

• Price in first year of sale
• 33.00 $

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

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

• Literature/Schematics (1)
• - - Manufacturers Literature

• 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