The CS10-23-436/20 from Pulsar Microwave is a Directional Coupler with Frequency 500 MHz to 18 GHz, Coupling 10 dB, Coupling Variation ±1 dB, Amplitude Flatness 1 dB, Directivity 12 to 15 dB. Tags: Module with Connectors. More details for CS10-23-436/20 can be seen below.