Tunable filters covering ranges up to 8 GHz are now available. The filters provide high Q tunable solutions for many of today’s higher frequency applications using 5-section coaxial cavity construction based on theoretical Chebyshev designs. Available tuning ranges include 2 to 4 GHz, 4 to 6 GHz, and 6 to 8 GHz. Typical bandwidth options range from 1% to 5%. Standard digital offerings are GPIB controlled and 110 VAC powered.