The WRCT16-923-924-928-929-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 924 to 928 MHz, Bandwidth 4 MHz, Insertion Loss 1 to 2.5 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT16-923-924-928-929-40 can be seen below.