The FLL-100K from Sirius Microwave is a Low Pass RF Filter with Frequency 0 to 0.1 MHz, Stopband Frequency 10 MHz to 3.5 GHz, 3 dB Cutoff Frequency 0.3 MHz, Insertion Loss 0.5 dB, Rejection 80 dB. Tags: Module with Connector, Lumped Component Filter. More details for FLL-100K can be seen below.