The RNFL2868K from RF-Lambda is a Band Stop Filter with Stopband Frequency 2.868 to 3.258 GHz, Insertion Loss 2 dB, Rejection 60 dB, Power 50 W, VSWR 1.50:1. Tags: Module with Connectors, Notch Filter, Cavity Filter. More details for RNFL2868K can be seen below.