The CS20-09-436/9 from Pulsar Microwave is a Directional Coupler with Frequency 2 to 8 GHz, Coupling 20 dB, Coupling Variation ±1 dB, Amplitude Flatness 0.75 dB, Directivity 20 dB. Tags: Module with Connectors. More details for CS20-09-436/9 can be seen below.