The LTF-545/6 -1 from Leader-MW is a Band Stop Filter with Stopband Frequency 536 to 542 MHz, Insertion Loss 1.6 dB, Rejection 25 dB, Power 100 W, VSWR 1.80:1. Tags: Module with Connectors, Cavity Filter, Notch Filter. More details for LTF-545/6 -1 can be seen below.