Troll Systems files for patents on Directional Diversity ground receive stations and begins to introduce state-of-the-art tactical microwave systems to manned and unmanned military programs. Broadcasters and law enforcement agencies worldwide also begin adopting these more robust diversity antenna solutions. By the end of 2008 Troll Systems had manufactured, installed and upgraded over 2,500 ground control systems and equipped over 90% of the broadcast news helicopters in the US