Late 1950s Zenith Deluxe Roayal 500 Radio

[Captainclock]

Originally Posted by jr_tech

Huh? The 1V4 is not listed in my tube manual and the 1V5 is listed a subminiature type, which was not used in any Transoceanic. I have 4 different models of the TA, spanning from very early models to the end of the TA era...NONE of the tubes are radioactive.

jr

I meant the 1U4 and the 1U5 and I had read online somewhere that they were Radioactive tubes.