M.E.C.’s precision fabricated 30 Series Transitions are designed to compactly and efficiently connect differently sized waveguide components, while maintaining a VSWR of 1.04:1 or less in cases where frequency bands overlap. Standard units are furnished in aluminum with cover or contact flanges, chromate conversion finished per MIL-C5541, Class 3, and painted with gray epoxy enamel on external, non-mating surfaces.