Space Machine offers a standard product line of waveguide to coax adapters covering waveguide sizes WR28 thru WR975. Space Machine offers a standard product line of end launch waveguide to coax adapters covering waveguide sizes WR28 thru WR430. VSWR is 1.35:1 max. Improved VSWR performance can be obtained over a reduced bandwidth. Space Machine’s End-Launch Adapters use a transition whose center conductor is structurally tied to the waveguide, for excellent mechanical and thermal stability. Additional sizes and configurations available upon request.