The 502/017 from Aaronia AG is a Directional Coupler with Frequency 50 to 6000 MHz, Coupling Variation ± 0.45 dB (Coup. Flatness), Directivity up to 33 dB, Insertion Loss 2 dB, Operating Temperature -40 to 85 Degree C. Tags: Module with Connectors. More details for 502/017 can be seen below.