The WRCT40-2004.2-2005-2010-2010.8-50-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 2.005 to 2.01 GHz, Bandwidth 5 MHz, Insertion Loss 3.5 to 6.5 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT40-2004.2-2005-2010-2010.8-50-1 can be seen below.