The U2514 from Mercury Systems is a Band Stop Filter with Stopband Frequency 88 to 108 MHz, Insertion Loss 0.5 to 1 dB, Rejection 20 dB @ 88 and 108 MHz, 70 dB @ 98 MHz, VSWR 2.00:1. Tags: Module with Connectors, LC Filter. More details for U2514 can be seen below.