Asked • 04/14/19

Why was the US army slow to adopt the use of radar prior to Pearl Harbour?

According to Wikipedia, the US radar station SCR-270 picked up the Japanese approach and reported it, but this report was ignored as the duty officer believed it to be American bombers coming from California. It also states that SCR-270 was still in training mode. So far, everything is clear in this specific case but, looking at the bigger picture, I can't find a reason or reasons why...

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