The BL-14/NF from MCLI is a 90 Degree Hybrid Coupler with Frequency 285 to 315 MHz, Insertion Loss 0.4 dB, Isolation 20 dB, Amplitude Balance ±0.7 dB, Phase Balance ±3 Degree. Tags: Module with Connectors, Octave Band. More details for BL-14/NF can be seen below.