The RMCO40.2100-2600Nf from Response Microwave Inc is a Directional Coupler with Frequency 2100 to 2600 MHz, Coupling 40 dB, Directivity 12 dB, Insertion Loss 0.5 dB. Tags: Module with Connectors. More details for RMCO40.2100-2600Nf can be seen below.