The 004850 from Phase2 Microwave is a Waveguide Coupler with Frequency 2.7 to 2.9 GHz, Coupling 39 to 41 dB, Directivity 25 dB, Insertion Loss 0.2 dB, Peak Power 1 MW. Tags: Bi-Directional Coupler, Loop Coupler. More details for 004850 can be seen below.