The M-121-231-92W012 from Narda-MITEQ is a 90 Degree Hybrid Coupler with Frequency 120 to 230 MHz, Average Power 250 W, Insertion Loss 0.3 dB, Isolation 20 dB, Amplitude Balance ± 0.75 dB. Tags: Drop In. More details for M-121-231-92W012 can be seen below.