The CS20-19-436/19 from Pulsar Microwave is a Directional Coupler with Frequency 500 MHz to 12 GHz, Coupling 20 dB, Coupling Variation ±1 dB, Amplitude Flatness 0.8 dB, Directivity 15 dB. Tags: Module with Connectors. More details for CS20-19-436/19 can be seen below.