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Monday, September 13, 2010

How incoming enemy aircraft were detected before the advent of radar

 

Enemy aircraft was detected in an amazingly backbreaking, elephant eared way!

 

How incoming enemy aircraft were detected before the advent of radar

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STRANGE ACOUSTIC "EARS"
BEFORE RADAR - ON A SWIVEL

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STRANGE ACOUSTIC "EARS"
BEFORE RADAR - GERMAN

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STRANGE ACOUSTIC "EARS"
BEFORE RADAR - ON WHEELS

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STRANGE ACOUSTIC "EARS"

BEFORE RADAR - ENGLAND

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