Key Specifications, Waveguide Size: WR-137, Gain Min: 20, Beam Width, 3dB V: 18.8, Beam Width, 3dB H: 18.7, Frequency, Min: 5.85 GHz, Frequency, Max: 8.2 GHz. WR-137 Standard Gain Horn Antenna Operating From 5.85 GHz to 8.2 GHz With a Nominal 20 dB Gain SMA Female Input Connector. PE9859/SF-20 standard gain horn antenna (also known as a waveguide horn antenna) is part of our huge selection of waveguide antennas. Pasternack standard gain horn antenna is manufactured with a WR-137 input and a waveguide to coaxial transition adapter. Our WR-137 standard gain horn antenna has a waveguide to coax adapter transition with a SMA connector input that is female gender. WR-137 standard gain horn waveguide antenna with SMA input has a minimum frequency of 5.85 GHz and a maximum frequency of 8.2 GHz. Pasternack PE9859/SF-20 WR-137 waveguide horn standard gain antenna is rated at a nominal 20 dB gain. Our 20 dB standard gain horn WR-137 waveguide antenna with SMA adapter has a vertical beam width of 18.8 and horizontal of 18.7 degrees at 3 dB. Pasternack is where to buy a WR-137 standard waveguide gain horn antenna with WR-137 input. This gain horn antenna is just one part of over 40,000 RF, microwave and millimeter wave guide components available and in-stock at our Irvine, CA United States warehouse. Our WR-137 standard waveguide horn antenna with SMA female interface can ship worldwide the same day that it is purchased as with our other available RF parts.