• Country
• United States of America (USA)

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

• Year
• 1918 ?

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

• Radiomuseum.org ID
• 115168

• Main principle
• Crystal or Solid State Detector

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: IP-77 Crystal Receiver - Wireless Specialty Apparatus

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 19.75 x 14.75 x 9.5 inch / 502 x 375 x 241 mm

• Price in first year of sale
• 396.00 $

• Source of data
• Crystal Clear (Volume 1)

• Author
• Model page created by Konrad Birkner † 12.08.2014. 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)