• Country
• United States of America (USA)

• Manufacturer / Brand
• Wireless Specialty Apparatus Co.; Boston (MA)

• Year
• 1914 ?

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 286485

• Main principle
• Crystal or Solid State Detector

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Crystal Detector IP-175 - Wireless Specialty Apparatus

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

• Dimensions (WHD)
• 200 x 100 x 160 mm / 7.9 x 3.9 x 6.3 inch

• Notes

• Détecteur au silice avec condensateur

• Net weight (2.2 lb = 1 kg)
• 1.4 kg / 3 lb 1.3 oz (3.084 lb)

• Author
• Model page created by Musée des Radios Museum. See "Data change" for further contributors.

• Other Models

• Here you find 68 models, 66 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Wireless Specialty Apparatus Co.; Boston (MA)