A non-tornadic spiral shaped radar echo is apparent in the lower left quadrantof the scope image. Observed on AFB CPS-9 PPI scope. The spiral echo is about90 miles southwest of radar location. The set was on long pulse (5 microsecond)and the anten
10/23/2018 10:08:57 AM
Date: 1959, July 1, 1501 CST
Location: Maxwell Air Force Base, Alabama
Subject: Instruments
Subject: Electronic
Subject: Radar
Subject: Display