The TLRF-830M-870M-E from Talent Microwave Inc is a Band Stop Filter with Stopband Frequency 830 to 870 MHz, Insertion Loss <1.0 dB(at the corner: 1.5dB Max.), Rejection 60 dB, Power 10 W, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for TLRF-830M-870M-E can be seen below.