The ZXLF-K641M+ from Mini Circuits is a Low Pass RF Filter with Frequency DC to 0.5 GHz, Stopband Frequency 1.1 to 11 GHz, 3 dB Cutoff Frequency 0.7 GHz, Insertion Loss 2.6 to 3.3 dB, Rejection 20 to 38 dB. Tags: Module with Connector, Reflectionless Filter. More details for ZXLF-K641M+ can be seen below.