• Country
• United States of America (USA)

• Manufacturer / Brand
• Brush Development Co. / Clevite Electronic Components; Cleveland, Ohio

• Year
• 1948 ??

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 163341

• • alternative name: Brush Electronics

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

• Number of Tubes
• 3

• Valves / Tubes
• 6SL7GT 6SN7GT 6X5GT

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Other Recorder/Player

• Power type and voltage
• Alternating Current supply (AC) / 110 Volt

• Loudspeaker
• - only for Earphone!

• Material
• Metal case

• from Radiomuseum.org
• Model: Mail-A-Voice BK-502 - Brush Development Co. /

• Shape
• Tablemodel, with any shape - general.

• Notes
• Schallaufzeichnungsgerät auf rotierenden beschichteten Scheiben. Kristallhörer für Aufnahme und Wiedergabe.

• Author
• Model page created by Harald Schlosser. See "Data change" for further contributors.

• Other Models

• Here you find 43 models, 39 with images and 22 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Brush Development Co. / Clevite Electronic Components; Cleveland, Ohio