• Country
• United States of America (USA)

• Manufacturer / Brand
• Bowman & Co., A.W.; Boston, Massachusetts

• Year
• 1923 ??

• Category
• Radio module post 1925 (not a part, not a key)

• Radiomuseum.org ID
• 121058

• Main principle
• Crystal or Solid State Detector

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Galena Detector - Bowman & Co., A.W.; Boston,

• Shape
• Miscellaneous shapes - described under notes.

• Dimensions (WHD)
• 5.57 x 2.5 x 0 inch / 141 x 64 x 0 mm

• Notes
• Ball friction arm. Crystal fixed in a cup with 3 screws.

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

• Mentioned in
• Crystal Clear (Volume 1) (fig.169 shows this component)

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 32 models, 31 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Bowman & Co., A.W.; Boston, Massachusetts