Systems Interface Limited

Systems Interface Limited is a UK-based supplier of navigation aids and ground-based aviation communication equipment to airports and air navigation service providers worldwide. The company supplies Non-Directional Beacons (NDB), VHF communication equipment, and related infrastructure. A notable public contract involved a framework agreement with ROMTEHNICA, the Romanian government's defence trade organisation, for the delivery of 13 Dual NDB systems based on the Nautel VR125S-RD-B 125W NDB. The first phase of that contract was completed in July 2025, with seven systems installed on schedule. Systems Interface provided a 10-year warranty on the units. The company's website is built by Frequentis, the Austrian ATM technology group, and their work spans both government and civil aviation sectors.