EdgeCom provides modern airfield lighting control solutions.  Systems include PC-based touchscreen workstations in the ATC Tower.  Vault equipment uses fiber, wire or RF for communications.  No transfer relay panels required.  Works with Unicom. Contact EdgeCom Systems Inc. 1328 South Barksdale Rd. Mt. Pleasant, SC 29464 843-425-4101 mike@edgecomsystems.com