• Country
• United States of America (USA)

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

• Year
• 1918

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 100966

• Number of Tubes
• 1

• Valves / Tubes
• VT-1

• Main principle
• TRF with regeneration

• Tuned circuits
• 2 AM circuit(s)

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

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: IP501 Receiver - Wireless Specialty Apparatus

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

• Dimensions (WHD)
• 20 x 11 x 9 inch / 508 x 279 x 229 mm

• Notes
• Uses a crystal detector or 1 tube VT-1. See also Amrad, Type B, SE-1420. From 1919 onwards, also VT-Class_I or B_Moorhead could be used.

• Price in first year of sale
• 348.00 $

• Source of data
• -- Collector info (Sammler)

• Mentioned in
• Crystal Clear (Volume 1)

• Author
• Model page created by John Koster. 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)