Radioactive Valve? Uranium Dioxide Tube EUV1

Jacob Roschy Ernst Erb Martin Renz Bernhard Nagel 
Cliquez sur le bouton d'information bleu pour en apprendre plus sur cette page.
Forum » Tubes (Lampes) - Semi-Conducteurs » Lampes ne figurant pas dans le Musée » Radioactive Valve? Uranium Dioxide Tube EUV1
Iordanis Smyrnis
GR  Articles: 2
Schémas: 1
Images: 0
29.May.21 00:08

Remerciements: 1
Répondre  |  Vous n'êtes pas connecté, mais en mode visiteur   1

I am in the procedure of trying to fix a friend's radio Kapsh Victoria from Austria.

Inside i found a weird tube like a light bulb and after using  a magnifying glass  i found out that it is a EU V1 tube.

An almost identical tube, the EUV , found on radiomuseum catalogue, says that it has Uranium Dioxide which is radioactive!!! Is this true?

Can someone indicate the use of it and if there is a way to avoid it in the radio and how?

Another Hazard in the radio is the metallic cover of the EU V1 tube with three stripes of what i believe is asbestos for heat dissipitation  !!!!

I cannot find a schematic of the radio to help me.

Tubes inside are the following EK2, ECH3, CBL1, CY1 &the EU V1.

Any idea, guidance, or suggestion is more than welcome!


Jacob Roschy
Jacob Roschy
D  Articles: 1705
Schémas: 17
Images: 68
30.May.21 21:11
Répondre  |  Vous n'êtes pas connecté, mais en mode visiteur   2


the EUVI – correctly written - can also be found in the radiomuseum catalogue,

About Urdox tubes please look at following links:

Are Urdox dangerous ?

Barretter-Urdox EUVI

comprehensive, in German, use a translator:

Heizkreisregelröhren: U, EW, EU, C

Best Regards,
Jacob Roschy

Andreas Steinmetz
D  Articles: 663
Schémas: 97
Images: 39
31.May.21 23:15
Répondre  |  Vous n'êtes pas connecté, mais en mode visiteur   3

Hi Jacob,

sorry, your last link is faulty. Here is the correct link to the article "Heizkreisregelröhren: U, EW, EU, C".