 RADCAT Case Directory Category 9, RADAR Preliminary Rating: 5 |
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| RADCAT is a revitalized special
project now being conducted
jointly by NICAP &
Project 1947 with the help and
cooperation of the original compiler of RADCAT, Martin Shough, to create a comprehensive listing
of radar cases with detailed
documentation from all
previous catalogues, including
UFOCAT and original
RADCAT. |
Ground
Radar Track Reponds to IFF Mode 3
July 18, 1957
Mt. Lemmons, Arizona
July 18, 1957
Mt. Lemmons, Arizona
| Brad
Sparks: July 18, 1957; Mt. Lemmon, Ariz. (BBU) 10:46-11:20 p.m. (MST). USAF ADC radar station 684th ACWRON, Mt. Lemmon AFS, Senior Director Capt. Claiborne F. Bickham and crew using both MPS-7 L-band search and MPS-14 S-band height-finder radars tracked a stationary target at 42,000 ft to the NW at 308° azimuth 82 miles range (S of Chandler, Ariz.). Target responded to encrypted military IFF Mode 3 transponder signals, transmitted encrypted responses resulting in "normal Mode 3 paint" on radar scopes, and "a very slight strobe came from object appearing like ECM jamming." (Jan Aldrich) 34 mins |