The ZXLF-K172H+ from Mini Circuits is a Low Pass RF Filter with Frequency DC to 2 GHz, Stopband Frequency 3.6 to 19 GHz, 3 dB Cutoff Frequency 2.6 GHz, Insertion Loss 2.7 to 3.5 dB, Rejection 14 to 47 dB. Tags: Module with Connector, Reflectionless Filter. More details for ZXLF-K172H+ can be seen below.