The C35-30-481/9N from Pulsar Microwave is a Directional Coupler with Frequency 2 to 4 GHz, Coupling 35 dB, Coupling Variation ±1 dB, Amplitude Flatness 1 dB, Directivity 20 dB. Tags: Module with Connectors. More details for C35-30-481/9N can be seen below.