The OHP 90-3 from Beijing Ocean Microwave Corporation is a RF High Pass Filter with Frequency 90 MHz to 1.25 GHz, Insertion Loss 0.32 to 0.37 dB, Rejection 40 @ 46.8 MHz to 60 @ DC to 35.1 MHz, VSWR 1.23:1, 1.50:1, Return Loss 14 to 20 dB. Tags: Module with Connectors, Chebyshev. More details for OHP 90-3 can be seen below.