The FLL15-3000 from Sirius Microwave is a Low Pass RF Filter with Frequency 0 to 2.8 GHz, Stopband Frequency 3.6 to 16 GHz, 3 dB Cutoff Frequency 3000 MHz, Insertion Loss 1.2 dB, Rejection 50 dB. Tags: Module with Connector, Lumped Component Filter. More details for FLL15-3000 can be seen below.