The WRCGV16-1770-1780-1810-1820-80 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.78 to 1.81 GHz, Bandwidth 30 MHz, Insertion Loss 1.25 to 2.5 dB, Rejection 80 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV16-1770-1780-1810-1820-80 can be seen below.