The OHP 35-6 from Beijing Ocean Microwave Corporation is a RF High Pass Filter with Frequency 35 to 650 MHz, Insertion Loss 0.84 to 1.28 dB, Rejection 40 @ 27.7 MHz to 60 @ DC to 24.7 MHz, VSWR 1.23:1, 1.50:1, Return Loss 14 to 20 dB. Tags: Module with Connectors, Chebyshev. More details for OHP 35-6 can be seen below.