The FLS-1100 from Synergy Microwave Corporation is a Low Pass RF Filter with Frequency DC to 1000 MHz, 3 dB Cutoff Frequency 1100 MHz @ 3 dB, Insertion Loss 0.6 to 1 dB, Rejection 20 to 35 dB @ 1700 to 1935 MHz, Upper Rejection 20 to 35 dB. Tags: Surface Mount. More details for FLS-1100 can be seen below.