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July 10, 2025, 01:22:23 AM
Funfani.com - Spreading Fun All Over!INFORMATION CLUBInformative ZoneMiscellaneousAircraft Detection Before The Invention Of Radar
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Paul Voebel
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« on: March 22, 2011, 01:35:34 AM »


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
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« Reply #1 on: March 22, 2011, 01:44:52 AM »
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« Reply #2 on: March 22, 2011, 01:50:46 AM »


ACOUSTIC "EARS"
BEFORE RADAR - ON A SWIVEL
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« Reply #3 on: March 22, 2011, 01:52:02 AM »
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« Reply #4 on: March 22, 2011, 01:53:13 AM »
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« Reply #5 on: March 22, 2011, 01:54:41 AM »


Go to The NEXT Page for More Pictures >>>
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