The HD32490 from HD Communications Corp is a Band Pass Filter with Frequency 186 to 340 MHz, Center Frequency 253 MHz, Insertion Loss 1.2 to 2.0 dB, Rejection 20 to 40 dB, Upper Rejection 20 to 39 dB @ 440 to 500 MHz. Tags: Module with Connectors. More details for HD32490 can be seen below.