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
ACOUSTIC "EARS"
BEFORE RADAR – ON A SWIVEL
ACOUSTIC "EARS"
BEFORE RADAR – GERMAN
ACOUSTIC "EARS"
BEFORE RADAR – ON WHEELS
ACOUSTIC "EARS"
BEFORE RADAR – ENGLAND
