Aircraft Detection Before Radar

I bet none of you ever saw this stuff before. This is how air attacks were detected before radar: with old time acoustic hearing aids.

Acoustic "ears" before radar – on a swivel.

Acoustic "ears" before radar – German

Acoustic "ears" before radar – on wheels

Acoustic "ears" before radar – England

~ by yougottobekidding on April 25, 2012.

One Response to “Aircraft Detection Before Radar”

  1. Reblogged this on ram0ram note book.

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