Communications & Tracking Systems Two Way Radio Communications & GPS/GPRS Vehicle Tracking Systems Implementation Vehicle tracking & mobile data systems. Two way radio communication systems - Conventional and Trunked (voice and data). APCO P25 radio voice and data systems Radio over IP systems. Linked multiple repeater base station over IP systems. Underground radio communications systems. Remote monitoring and reporting of dispersed radio repeaters via IP. Radio and ancillary support and interfaced equipment. Radio application and business support