The C-1806-30 from Werbel Microwave is a Directional Coupler that operates from 6 to 18 GHz. This 30 dB coupler has a directivity of 14 dB and a frequency sensitivity of ±0.5 dB. It can handle a CW input power of up to 50 W and has a mainline loss of less than 0.6 dB. The coupler is available in an Aluminum module that measures 1.00 x 0.60 x 0.38 inches and has SMA-female connectors. It is designed for indoor applications and has an operating temperature range from -55 to +85°C.