The RFDC1M4M40 from RF-Lambda is a Directional Coupler that operates from 100 to 400 MHz. It provides 40 dB of coupling with directivity of 22 dB and has an insertion loss of less than 0.25 dB. This coupler can handle an average input power of 500 W and a peak input power of 5 kW. It is available in a module that measures 318.5 x 38.7 x 27.0 mm with N-Type (female) connectors and is also available in an optional MIL-STD-883 qualified, hermetically sealed module. The coupler is ideal for aerospace & military, wireless infrastructure, and test & measurement applications.