chrishoon Posted November 25, 2012 Share #1 Posted November 25, 2012 i found this radar and the man who owned it was in vietnam and dropped these from helicopters it originally had a tree like structure on the top which when dropped in the jungle would track the movements of the Viet kong and info or pictures is greatly needed- thanks Link to comment Share on other sites More sharing options...
gwb123 Posted November 25, 2012 Share #2 Posted November 25, 2012 What you appear to have is an ADSID, Air Delivered Seismic Intrusion Detector. It was not a radar device, but rather one that detected vibration and movement. "The Defense Communications Planning Group's research and development program created an advanced technological system. Muscle Shoals would consist of three interdependent parts. First, there were air-dropped, battery-powered acoustic and seismic sensors.[18] The camouflaged sensors were to be dropped in strings at predetermined geographical points along the PAVN logistical network (Ho Chi Minh Trail). Once emplaced, they would serve as tripwires to any movement or activity along the system. The first sensors utilized by the program were Air-Delivered Seismic Intrusion Detector (ADSID), which had been developed from devices then in use in underground mapping for the oil industry. The device could sense vertical earth motion by the use of an internal geophone and could determine whether a man or a vehicle was in motion at a range of 33 yards (30 m) and 109 yards (100 m) respectively.[19] The first acoustic sensors were developed from the U.S. Navy's Project Jezebel anti-submarine warfare sonobuoys, which recorded and processed sound by the utilization of an audio spectrum analyzer. The first model of seismic detectors (Phase I) outshone their contemporary acoustic types in the quality and quantity of the information they reported.[20] The Phase I models of both the acoustic and seismic sensors were only available for operation in a continuous mode, which meant that under normal conditions, their lithium batteries would function for approximately 30 days." http://en.wikipedia.org/wiki/Operation_Igloo_White Link to comment Share on other sites More sharing options...
gwb123 Posted November 25, 2012 Share #3 Posted November 25, 2012 Also, please see this page from the USAF National Museum http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=13048 Link to comment Share on other sites More sharing options...
chrishoon Posted November 25, 2012 Author Share #4 Posted November 25, 2012 thanks so much Link to comment Share on other sites More sharing options...
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