The OHP 650-8 from Beijing Ocean Microwave Corporation is a RF High Pass Filter with Frequency 650 MHz to 3 GHz, Insertion Loss 0.31 to 0.34 dB, Rejection 40 @ 338 MHz to 60 @ DC to 254 MHz, VSWR 1.23:1, 1.50:1, Return Loss 14 to 20 dB. Tags: Module with Connectors, Chebyshev. More details for OHP 650-8 can be seen below.