The WRCD20-1425.9-1427.9-1447.9-1449.9-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.4279 to 1.4479 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 WRCD20-1425.9-1427.9-1447.9-1449.9-40 can be seen below.