what is a compass call
EC-130H Compass Call is an airborne, wide area tactical weapon system developed primarily for the US Air Force (USAF), by collaboration between Lockheed Martin, L3 Communications and BAE Systems.The Compass Call completed 10,400 combat missions and 64,200 flight hours as of February 2014.ngine and performance of Compass Call. The EC-130H Compass Call is powered by four Allison T56-A-15 turboprop engines, which develop a thrust of 4,910shp. The aircraft can fly at a speed of 300mph at an altitude of 20,000ft. It has a maximum take-off weight of 155,000lbs, range of 3,694km and ceiling of 7.6km.