Aircraft Detection Before Radar
Aircraft
Detection
Before
Radar....
I bet none of
you ever
saw this stuff
before.
How air attacks
were
detected
before
radar...Old time
acoustic
hearing aids.
http://us.mc1108.mail.yahoo.com/mc/welcome?.tm=1324504059#_pg=showMessage;_ylc=X3oDMTBucmhobGR0BF9TAzM5ODMwMTAyNwRhYwNkZWxNc2dz&mid=2_0_0_1_12866452_AOANw0MAABKSUBGEtwfEPEz3B9A&fid=Inbox&sort=date&order=down&startMid=0&filterBy=&.rand=350727611&hash=165ab039f3688f30982af841c37b2560&.jsrand=5596872
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