There's an episode of the 1970s BBC documentary series "The Secret War" about the miscellaneous technology projects that sound obviously crazy now, or may have been cancelled to soon:
The whole series is worth a watch, including episodes on radio location finding, radar and radar jamming, Jet engines, the V1/V2 rockets, and Ultra/Enigma etc. Many of the participants (both British and German) are interviewed - including Albert Speer.
It is interesting how the Germans made all these spectacular high tech weapons (V1, V2, rocket planes etc) and yet it was the less flashy Allied tech advances that made the difference (cavity magnetron, early computers, proximity fuses etc).
Electronic warfare in WWII was a competition and it looks like the US/UK had the upper hand because, in retrospect, they won the war. Germans were ahead in some areas, not least magnetic tape
Germany had a lot of top scientists and engineers. But I'm not sure I can see how mag tape would be a war winning weapon in the way that radar, early computers or proximity fuses were.
Of course, Germany booted out loads of Jewish scientists. Many of whom ended up doing important work for the Allies - not least on the atom bomb.
https://www.youtube.com/watch?v=GJCF-Ufapu8&t=8883s
The whole series is worth a watch, including episodes on radio location finding, radar and radar jamming, Jet engines, the V1/V2 rockets, and Ultra/Enigma etc. Many of the participants (both British and German) are interviewed - including Albert Speer.