• Country
• United States of America (USA)

• Manufacturer / Brand
• Hamburg Brothers; Pittsburgh, Pennsylvania

• Year
• 1925

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 130508

• • Brand: Pennsylvania (Trade name)

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Material
• Various materials

• from Radiomuseum.org
• Model: Pennsylvania Type B-20 - Hamburg Brothers; Pittsburgh,

• Notes
• "Harmonized Head-Set"

• Price in first year of sale
• 3.00 $

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

• Mentioned in
• The Radio Trade Directory, August 1925

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• Other Models

• Here you find 14 models, 8 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hamburg Brothers; Pittsburgh, Pennsylvania