• Country
• United States of America (USA)

• Manufacturer / Brand
• Shamrock Manufacturing Co.; Newark, NJ

• Year
• 1924

• Category
• Detector-Radio (Crystal or diode, without tubes/transistors)

• Radiomuseum.org ID
• 131202

• Main principle
• Crystal or Solid State Detector

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Radiophone "Crystal" A - Shamrock Manufacturing Co.;

• Dimensions (WHD)
• 5.8 x 1.6 x 3.8 inch / 147 x 41 x 97 mm

• Notes
• Walnut box with lid. Similar to Mengel MR 101 (manufactured by Mengel), and United Diamond.

• Price in first year of sale
• 4.00 $

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

• Mentioned in
• 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 21 models, 6 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Shamrock Manufacturing Co.; Newark, NJ