The C4-P5-411 from Pulsar Microwave is a Directional Coupler with Frequency 30 to 400 MHz, Coupling 20 dB, Coupling Variation ±0.5 dB, Amplitude Flatness 0.4 dB, Directivity 25 dB. Tags: Module with Connectors. More details for C4-P5-411 can be seen below.