The WRCT40-1806.4-1807.4-1822.4-1823.4-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.8074 to 1.8224 GHz, Bandwidth 15 MHz, Insertion Loss 3.5 to 6 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT40-1806.4-1807.4-1822.4-1823.4-50 can be seen below.