Key Specifications, Waveguide Size: WR-187, Coax Connector Impedance: 50 Ohm, Coax Connector Series: SMA, Coax Connector Gender: Female, Waveguide Adapter Style: Right Angle, Minimum Frequency: 3.94 GHz, Maximum Frequency: 5.99 GHz, Maximum VSWR: 1.25:1. WR-187 UDR48 Flange to SMA Female Waveguide to Coax Adapter Operating from 3.94 GHz to 5.99 GHz. PEWCA1076 WR-187 waveguide to coax adapter is also known as a WR-187 waveguide transition. This waveguide to coax adapter / transition is constructed as a WR-187 to SMA connector and has a female gender. Our WR187 to SMA female waveguide adapter transition has a right angle design and has a UDR48 flange. Pasternack right angle WR 187 to SMA waveguide to coaxial cable transition / adapter has a minimum frequency of 3.94 GHz and a maximum frequency of 5.99 GHz. WR-187 waveguide to SMA transition adapter to coax PEWCA1076 is part of over 40,000 RF, microwave and millimeter wave components available from Pasternack. Our WR-187 waveguide adapter transition with SMA interface can ship worldwide the same day that it is purchased as with our other available RF parts.