The WVR-1575.42B-10M01 from Wevercomm is a Band Stop Filter with Stopband Frequency 1.574 to 1.576 GHz, Bandwidth 2 MHz, Insertion Loss 1 dB, Rejection 48 to 80 dB @1575.42MHz ± 5MHz, Power 80 W. Tags: Module with Connectors, Cavity Filter, Notch Filter. More details for WVR-1575.42B-10M01 can be seen below.