R.S.V.P. Radio Gramophone

Gottlieb, J.L. & Co.; London

  • Year
  • 1928
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 354807

 Technical Specifications

  • Number of Tubes
  • 5
  • Valves / Tubes
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Details
  • Record Player (not changer)
  • Power type and voltage
  • Batteries / addl. power jack / 100, 2 Volt
  • Loudspeaker
  • Magnetic loudspeaker (reed) generic.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: R.S.V.P. Radio Gramophone - Gottlieb, J.L. & Co.; London
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Notes
  • R.S.V.P Radio Gramophone

    An exhibit of greatest interest on this stand is a combined radio & gramophone receiver built into a suitcase of surprisingly small dimensions considering the nature of the apparatus.

     Actually, it is no larger than the average portable gramophone, but of course has a vastly wider field of utility than a gramophone could possibly achieve. For wireless reproduction a five-valve receiver is used, the circuit follows the generally adopted practice in this respect, namely 2 HF stages, a detector, and two LF amplifiers. The lid accommodates a cone loudspeaker and two separate frame aerials, one for normal broadcast wavelengths and the other for the Daventry band.

    A 100-volt HT battery and a 2-volt LT accumulator are ingeniously accommodated in the same compartment as the gramophone motor.
    For gramophone reproduction the low-frequency side of the receiver only is used, an Igranic pickup being the link between the receiver and the amplifier. Records up to 12” diameter can be played.

    See also the R.S.V.P., Portable.

  • Price in first year of sale
  • 35.00 GB £
  • Author
  • Model page created by Gary Cowans. See "Data change" for further contributors.

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