The HP R281A adapter transforms waveguide transmission line into 50-ohm coaxial line. Power can be transmitted in either direction, and each adapter covers the full frequency range of its waveguide band with SWR less than 1.3.
•Connector: 2.4mm Female
•Maximum SWR: 1.13
•Waveguide Designator: EIA WR-28 MIL-W-85/3-009
•Flange Designator: UG-599/U MIL-F-3922