The RK20-544P-6G from MTS Systemtechnik GmbH is a Directional Coupler with Frequency 700 to 6000 MHz, Coupling 20 ±0.5dB, Directivity 15 to 27 dB, Power 50 W, Average Power 50 W. Tags: Module with Connectors. More details for RK20-544P-6G can be seen below.