• Country
• United States of America (USA)

• Manufacturer / Brand
• Hoffman Radio Corp.; Los Angeles, CA

• Year
• 1958 ?

• Category
• Miscellaneous (Other, Various) - see notes

• Radiomuseum.org ID
• 168341

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 2

• Valves / Tubes
• 3A5 1U5

• Wave bands
• - without

• Power type and voltage
• Storage and/or dry batteries / 1.5 / 135 Volt

• Loudspeaker
• - For headphones or amp.

• from Radiomuseum.org
• Model: Geiger Counter 223-1 - Hoffman Radio Corp.; Los

• Notes
• The Hoffman Model 223-1 is a Battery operated Geiger Counter.

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 1-59, Set 428, Servicer)

• Author
• Model page created by Egon Penker. See "Data change" for further contributors.

• Other Models

• Here you find 927 models, 213 with images and 894 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hoffman Radio Corp.; Los Angeles, CA