The EF50, the Tube that helped to Win the War

Edmond Stuart · 03:38 PM

For those interested in history, here's a most interesting and fascinating website: The EF50, the tube that helped to win the War
Some 50 years ago, I already heard about it vaguely. By that time I considered the story as family gossip. Now it appears to be true.

Cheers,
E.

edit: 40 -> 50 years

devilsindetails · 23rd May 2011, 05:31 AM

Very interesting Edmond. Thks for posting! Leo

Edmond Stuart · 23rd May 2011, 06:48 AM

To me it is even more interesting as the one who told me first about it (50 years ago) was .... my mother!

Cheers,
E.

picowallspeaker · 23rd May 2011, 07:55 AM

Now you can see that heater filament in transparency ,trough a banknote ...

11th May 2011, 03:23 PM	#1
Edmond Stuart diyAudio Member Join Date: Nov 2003 Location: Amsterdam	The EF50, the Tube that helped to Win the War For those interested in history, here's a most interesting and fascinating website: The EF50, the tube that helped to win the War Some 50 years ago, I already heard about it vaguely. By that time I considered the story as family gossip. Now it appears to be true. Cheers, E. edit: 40 -> 50 years __________________ Een volk dat voor tirannen zwicht, zal meer dan lijf en goed verliezen dan dooft het licht…(H.M. van Randwijk) Last edited by Edmond Stuart; 11th May 2011 at 03:38 PM.

23rd May 2011, 05:31 AM	#2
devilsindetails diyAudio Member Join Date: May 2011 Location: 100th Meridian	Very interesting Edmond. Thks for posting! Leo __________________ I have yet to see any problem, however complicated, which, when you looked at it in the right way, did not become still more complicated. (Poul Anderson)

23rd May 2011, 06:48 AM	#3
Edmond Stuart diyAudio Member Join Date: Nov 2003 Location: Amsterdam	To me it is even more interesting as the one who told me first about it (50 years ago) was .... my mother! Cheers, E. __________________ Een volk dat voor tirannen zwicht, zal meer dan lijf en goed verliezen dan dooft het licht…(H.M. van Randwijk)

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23rd May 2011, 07:55 AM	#4
picowallspeaker diyAudio Member Join Date: Apr 2007	Now you can see that heater filament in transparency ,trough a banknote ...

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