The WRCD15-1857.9-1859.9-1864.9-1866.9-45 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.8599 to 1.8649 GHz, Bandwidth 5 MHz, Insertion Loss 1.75 to 3 dB, Rejection 45 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCD15-1857.9-1859.9-1864.9-1866.9-45 can be seen below.