• Year
  • 1958/1959
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 30888
    • Brand: Supraphon

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superheterodyne (common); ZF/IF 468 kHz
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast, Long Wave and Short Wave.
  • Power type and voltage
  • Alternating Current supply (AC) / 110-220 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical
  • Power out
  • 3 W (unknown quality)
  • Material
  • Bakelite case
  • from Radiomuseum.org
  • Model: Trio 420A - Tesla; Praha, Bratislava etc.
  • Shape
  • Tablemodel, with any shape - general.
  • Notes
  • Loudspeaker dimensions: 16x12cm. Marked model as 420A-a was mounted to the case of Trio 420U.
  • Source of data
  • -- Collector info (Sammler)

 Collections | Museums | Literature

Collections

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

 Forum

Forum contributions about this model: Tesla; Praha,: Trio 420A

Threads: 1 | Posts: 1

Korrektur Stromlauf Tesla 420A:

Die Kombination R14, 250 Ohm und C41, 50uF gehört natürlich an die Kathode angeschlossen und nicht an Gitter1 der Endpentode 6L31.

 

Tilman Betz, 25.Sep.11

Weitere Posts (1) zu diesem Thema.