Profile: Seyco Ltd supplies RF and microwave components, units and systems for use in commercial & military applications. We speciallize in co-axial switches, microwave antennas, YIG filters & oscillators, travelling-wave tubes, ELINT & ESM systems and PIN switches. We also provide amplifiers, attenuators, circulators & isolators, coaxial connectors & adapters, detector modules, filters, power meters and couplers.