The 721-40-0.900 from MECA is a Directional Coupler with Frequency 600 MHz to 1.2 GHz, Coupling 40 dB, Coupling Variation -0.6 to 6 dB, Directivity 25 to 27 dB, Power 500 W. Tags: Module with Connectors. More details for 721-40-0.900 can be seen below.