The M-151-251-92W012 from Narda-MITEQ is a 90 Degree Hybrid Coupler with Frequency 150 to 250 MHz, Average Power 250 W, Insertion Loss 0.25 dB, Isolation 20 dB, Amplitude Balance ± 0.75 dB. Tags: Drop In. More details for M-151-251-92W012 can be seen below.