Re: EF50 was Re: radar history

[Christian Corti via cctalk]

On Sun, 4 Mar 2018, Nico de Jong wrote:

E = 6.3v filament
F = Pentode
5x = B9G base

.. also known as Noval base

No, absolutely not ;-)
The EF50 has a Loctal base with eight pins. 5xx is Magnoval. 8x is Noval.

Christian