[Telecolor 3007]

Originally Posted by Josef

I own Austrias first all tube FM portable radio:

https://www.radiomuseum.org/r/radion...?language_id=2

and its hybrid successor

https://www.radiomuseum.org/r/radione_r25t.html

This radio offers not only a built in mains transformer but also a transistorized DC/DC converter which obivated the anode battery

1st times I've read Australia and I wondered how come portable tube radios with F.M. in 1957 since in Australia F.M. camed only in 1975.
But it was Austria. The radio had 5 or 6 tubes for radio frequency as I can see. Most had only 4. How did it worked on radio? And what F.M. frequency range it had?