The M-51-111-92WS from Narda-MITEQ is a 90 Degree Hybrid Coupler with Frequency 50 to 110 MHz, Average Power 250 W, Insertion Loss 0.5 dB, Isolation 20 dB, Amplitude Balance ± 0.5 dB. Tags: Module with Connectors. More details for M-51-111-92WS can be seen below.