The C3-01-411 from Pulsar Microwave is a Directional Coupler with Frequency 0.3 to 50 MHz, Coupling 15 dB, Coupling Variation ±0.5 dB, Amplitude Flatness 0.25 dB, Directivity 25 dB. Tags: Module with Connectors. More details for C3-01-411 can be seen below.