The FLP-90 from Synergy Microwave Corporation is a Low Pass RF Filter with Frequency DC to 82.8 MHz, 3 dB Cutoff Frequency 90 MHz @ 3 dB, Insertion Loss 1 dB, Rejection 20 to 35 dB @ 120 to 156 MHz, Upper Rejection 20 to 35 dB. Tags: Plug In. More details for FLP-90 can be seen below.