Key Specifications, Waveguide Size: WR-137, Coax Connector Series: SMA, Coax Connector Gender: Female, Waveguide Adapter Style: Right Angle, Minimum Frequency: 5.38 GHz, Maximum Frequency: 8.17 GHz, Maximum VSWR: 1.25:1. WR-137 UDR70 Flange to SMA Female Waveguide to Coax Adapter Operating from 5.38 GHz to 8.17 GHz in Aluminum. PEWCA1088 WR-137 waveguide to coax adapter is also known as a WR-137 waveguide transition. This waveguide to coax adapter / transition is constructed as a WR-137 to SMA connector and has a female gender. Our WR137 to SMA female waveguide adapter transition has a right angle design and has a UDR70 flange. Pasternack right angle WR-137 to SMA waveguide to coaxial cable transition / adapter has a minimum frequency of 5.38 GHz and a maximum frequency of 8.17 GHz. WR137 waveguide to SMA transition adapter to coax PEWCA1088 is part of over 40,000 RF, microwave and millimeter wave components available from Pasternack. Our WR-137 waveguide adapter transition with SMA interface can ship worldwide the same day that it is purchased as with our other available RF parts.