Tubes to the Rescue

[FerdinandII]

Miniaturized and ruggedized - before the Nuvistor

https://www.wired.com/story/the-american-scientists-who-saved-london-from-nazi-drones/

[brombo]

This also might be of interest -

https://en.wikipedia.org/wiki/Harry_Diamond_(engineer)#Proximity_Fuze_development

[FerdinandII]

Local Trivia (That I have Enjoyed on Occasion) : Diamond's daughter Zelda Fichandler along with her husband Thomas C. Fichandler in 1950 co-founded the Arena Stage in Washington DC.[9]

This also might be of interest -

https://en.wikipedia.org/wiki/Harry_Diamond_(engineer)#Proximity_Fuze_development

[tomp]

Goes to prove any technology can be made to work if you know what your are doing. Some are harder and more expensive than others but the key is the knowledge and implementation.

[SoundMods]

Goes to prove any technology can be made to work if you know what your are doing. Some are harder and more expensive than others but the key is the knowledge and implementation.

To quote NASA: "Need is the Mother of invention."