Key Specifications, Waveguide Size: WR-137, Coax Connector Impedance: 50 Ohm, Coax Connector Series: SMA, Coax Connector Gender: Female, Waveguide Adapter Style: Right Angle, Minimum Frequency: 5.85 GHz, Maximum Frequency: 8.2 GHz. WR-137 UG-344/U Round Cover Flange to SMA Female Waveguide to Coax Adapter Operating from 5.85 GHz to 8.2 GHz. PEWCA1014 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 WR-137 to SMA female waveguide adapter transition has a right angle design and has a round cover flange. Pasternack right angle WR137 to SMA waveguide to coaxial cable transition / adapter has a minimum frequency of 5.85 GHz and a maximum frequency of 8.2 GHz. WR-137 waveguide to SMA transition adapter to coax PEWCA1014 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.