Roamer 572 Valve 39 Det./A.F.

Stromberg-Carlson (Australasia) Pty. Ltd. Sydney

Data
Forum
Pictures
Collections

  • Year
  • 1932
  • Category
  • Car Radio, perhaps also + sound player/recorder
  • Radiomuseum.org ID
  • 165358

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superheterodyne (common); ZF/IF 465 kHz; 2 AF stage(s)
  • Tuned circuits
  • 8 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Storage and/or dry batteries / 6 & 180 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Roamer 572 [Valve 39 Det./A.F.] - Stromberg-Carlson Australasia
  • Notes

  • This model could be used with either H.T. batteries, or a "battery eliminator" (presumably genemotor).

    This radio makes unusual use of a 239 as a diode detector and triode audio amplifier.  The normal anode is used as the diode anode, and the screen grid is used as the triode anode.  This circuit was soon superseded by one using a type 85 valve in the usual way.  See variant.

  • Price in first year of sale
  • 33.00 Aus£
  • Literature/Schematics (1)
  • - - Manufacturers Literature
  • Author
  • Model page created by Stuart Irwin. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum