The OHP 90-7 from Beijing Ocean Microwave Corporation is a RF High Pass Filter with Frequency 90 MHz to 1.25 GHz, Insertion Loss 0.77 to 1.15 dB, Rejection 40 @ 75.2 MHz to 60 @ DC to 68.9 MHz, VSWR 1.23:1, 1.50:1, Return Loss 14 to 20 dB. Tags: Module with Connectors, Chebyshev. More details for OHP 90-7 can be seen below.