Key Specifications, Waveguide Size: WR-51, Coax Connector Series: SMA, Coax Connector Gender: Female, Waveguide Adapter Style: Right Angle, Minimum Frequency: 14.5 GHz, Maximum Frequency: 22 GHz, Maximum VSWR: 1.25:1. WR-51 UBR180 Flange to SMA Female Waveguide to Coax Adapter Operating from 14.5 GHz to 22 GHz in Brass. PEWCA1099 WR-51 waveguide to coax adapter is also known as a WR-51 waveguide transition. This waveguide to coax adapter / transition is constructed as a WR-51 to SMA connector and has a female gender. Our WR-51 to SMA female waveguide adapter transition has a right angle design and has a UBR180 flange. Pasternack right angle WR 51 to SMA waveguide to coaxial cable transition / adapter has a minimum frequency of 14.5 GHz and a maximum frequency of 22 GHz. WR-51 waveguide to SMA transition adapter to coax PEWCA1099 is part of over 40,000 RF, microwave and millimeter wave components available from Pasternack. Our WR-51 waveguide adapter transition with SMA interface can ship worldwide the same day that it is purchased as with our other available RF parts.