The TLRF-4G-100M-S from Talent Microwave Inc is a Band Stop Filter with Stopband Frequency 3950 to 4050 MHz, Insertion Loss 1.5 to 2 dB, Rejection 40 dB, Power 10 W, VSWR 1.70:1. Tags: Module with Connectors, Cavity Filter. More details for TLRF-4G-100M-S can be seen below.