The OHP 65-6 from Beijing Ocean Microwave Corporation is a RF High Pass Filter with Frequency 65 to 800 MHz, Insertion Loss 0.65 to 0.98 dB, Rejection 40 @ 51.4 MHz to 60 @ DC to 45.8 MHz, VSWR 1.23:1, 1.50:1, Return Loss 14 to 20 dB. Tags: Module with Connectors, Chebyshev. More details for OHP 65-6 can be seen below.