The WRCD20-1491.5-1493.5-1513.5-1515.5-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.4935 to 1.5135 GHz, Bandwidth 20 MHz, Insertion Loss 2.25 to 3.5 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCD20-1491.5-1493.5-1513.5-1515.5-40 can be seen below.