The TLP-L-10052 from Telonic Berkeley is a Low Pass RF Filter with Frequency DC to 174 MHz, 3 dB Cutoff Frequency 174 MHz, Insertion Loss 1 dB, Rejection 40 to 50 dB, Upper Rejection 50 dB @ 216 MHz, 50 dB @ 216 to 324 MHz, 40 dB @ 324 to 432 MHz. More details for TLP-L-10052 can be seen below.