The CS30-01-436/3 from Pulsar Microwave is a Directional Coupler with Frequency 500 MHz to 1 GHz, Coupling 30 dB, Coupling Variation ±1.25 dB, Amplitude Flatness 0.75 dB, Directivity 25 dB. Tags: Module with Connectors. More details for CS30-01-436/3 can be seen below.