Amplifier Catacomb SM-440 SG

Silver - Marshall; Chicago, IL

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  • Year
  • 1928 ?
  • Category
  • RF (Radio Frequency-) Amplifier
  • Radiomuseum.org ID
  • 213647

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Radio Frequency Amplification only; Screengrid 1926-1935
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Storage and/or dry batteries / 6 & 135 & -4.5 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Amplifier Catacomb SM-440 SG - Silver - Marshall; Chicago, IL
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 15 x 6 x 5 inch / 381 x 152 x 127 mm
  • Notes

  • Silver - Marshall Catacomb Amplifier SM-440 SG;
    Time signal amplifier tuned to 112 kilocycle with screen grid tubes;
    voltage: A: 6 volts at 0.65 amperes, B: 135 volts at 6 milliamperes, C: 4.5 volts;

    See model: SM 440; without screen grid tubes.

    Zeitsignalverstärker 112 kHz mit Schirmgitterröhren; Vorgängermodell: SM-440; ohne Schirmgitterröhren.

     

  • Price in first year of sale
  • 40.00 $
  • Author
  • Model page created by Karlheinz Gützlaff. See "Data change" for further contributors.

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