Phonometer 7927

Philips; Eindhoven (tubes international!); Miniwatt

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  • Year
  • 1935
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 292112

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • Powered by external power supply or a main unit.
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Phonometer 7927 - Philips; Eindhoven tubes
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 118 x 167 x 62 mm / 4.6 x 6.6 x 2.4 inch
  • Notes

  • Portable tube tester for comparing two tubes of the same type. In metal box with lid and a brown leather strap. With this instrument, a tube vendor could convince a consumer that a new tube sounds better than an old, worn-out tube.

    The tester is equipped with an adapter that could be inserted into a tube base in the radio of a customer. In the tester, a new tube and the old tube from the customer's receiver were placed side by side. By switching a lever, the quality difference between the old and the new tube could be proved in an audible manner. In the tester, tubes with a B-base and a P-base can be tested.

    The test does have some restrictions. Testing HF converter and other preamplifier tubes works less well because of capacity differences. The Phonometer was specially designed for power tubes and rectifiers.

  • Author
  • Model page created by John Koster. See "Data change" for further contributors.

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The model Phonometer is part of the collections of the following members.

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