The CS20-56-436/20 from Pulsar Microwave is a Directional Coupler with Frequency 500 MHz to 27 GHz, Coupling 20 dB, Coupling Variation ±1 dB, Amplitude Flatness 1.4 dB, Directivity 12 dB. Tags: Module with Connectors. More details for CS20-56-436/20 can be seen below.