STI-CO is an antenna engineering and manufacturing company with offices located in Orchard Park, NY. We have over 50 years of experience in antenna and filter design for heavy rail, passenger rail and homeland security applications. STI-CO was one of the first to engineer a complete multi-band antenna solution meeting the Positive Train Control initiative. We custom design to locomotive roof tops to meet the specific requirements of our customers. We have in-depth experience in optimizing RF antenna systems where there are multiple frequencies to mitigate. STI-CO has worked extensively in the North-East Corridor, METRA, and other commuter rails.