The HL-11 from MCLI is a 90 Degree Hybrid Coupler with Frequency 139.5 to 140.5 MHz, Insertion Loss 0.5 dB, Isolation 20 dB, Amplitude Balance ±0.3 dB, Phase Balance ±2.5 Degree. Tags: Module with Connectors. More details for HL-11 can be seen below.