Ore (unknown)

Oy Helvar; Helsinki

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  • Year
  • 1948 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 227810

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • Superheterodyne (common)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast, Long Wave and 2 x Short Wave.
  • Power type and voltage
  • AC/DC-set / 110 - 240 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 20 cm = 7.9 inch
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Ore - Oy Helvar; Helsinki
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 520 x 315 x 235 mm / 20.5 x 12.4 x 9.3 inch
  • Notes

  • The tube data from putkiradiomuseo.wippiespace.com are dubious:

    Two different Power tubes with high filament current
    EL33   0.9 A
    6F6G   0.7 A

    one thereof may be used as rectifier (?). But a series filament circuit must bear the highest current involved, i.e. 0.9 A! That means ~200 Watt. If we subtract the real complete filament power of < 15 W, then the remaining power of 185 W must be dissipated by series/shunt resistors.

    All that points to an makeshift repair.
    The original tube lineup was certainly different. Most probably has been EL32 and CY31, altogether a 0.2 A circuit = 44 W. Minus 10 W for the tube filaments only the remaining 34 W must be dissipated by the resistor. That is a usual figure for an AC/DC set at 220 V mains.

  • Author
  • Model page created by Timo Rantasaari. See "Data change" for further contributors.

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