• Country
• United States of America (USA)

• Manufacturer / Brand
• Firth, John & Co. (Firco); New York, (NY)

• Year
• 1921

• Category
• Detector-Radio (Crystal or diode, without tubes/transistors)

• Radiomuseum.org ID
• 221120

• Main principle
• Crystal or Solid State Detector

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Bakelite or Plastics (type unknown)

• from Radiomuseum.org
• Model: Midget Crystal Receiver - Firth, John & Co. Firco; New

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 0 x 5.25 x 0 inch / 0 x 133 x 0 mm

• Notes
• John Firth Company Midget Crystal Receiver.

• Literature/Schematics (1)
• October 1921 Pacific Radio News magazine page 101

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

• Other Models

• Here you find 23 models, 21 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Firth, John & Co. (Firco); New York, (NY)