Kit SM-740 AC Coast to Coast Screen Grid 4

Silver - Marshall; Chicago, IL

  • Year
  • 1929
  • Category
  • Kit (Parts plus instruction) or building instructions only
  • Radiomuseum.org ID
  • 57961

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Valves / Tubes
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown); Screengrid 1926-1935
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Kit SM-740 AC [Coast to Coast Screen Grid 4] - Silver - Marshall; Chicago, IL
  • Shape
  • Chassis only or for «building in»
  • Notes
  • One dial (primary tuning control knob), can be used with SM-670ABC or SM-675 power units.
  • Price in first year of sale
  • 32.00 $
  • External source of data
  • Ernst Erb
  • Literature/Schematics (1)
  • Walter Ashe Radio Co. catalogue for season 1928-1929

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