The ZXLF-K13H+ from Mini Circuits is a Low Pass RF Filter with Frequency DC to 1 GHz, Stopband Frequency 1.85 to 19 GHz, 3 dB Cutoff Frequency 1.3 GHz, Insertion Loss 2.8 to 3.6 dB, Rejection 12 to 50 dB. Tags: Module with Connector, Reflectionless Filter. More details for ZXLF-K13H+ can be seen below.