The FMCP1023-20 from Fairview Microwave is a Directional Coupler with Frequency 800 MHz to 2.5 GHz, Coupling 20 dB, Coupling Variation ±1 dB, Frequency Sensitivity 0.7 dB, Directivity 20 dB. Tags: Module with Connectors. More details for FMCP1023-20 can be seen below.