The WRCT16-914-915-920-921-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 915 to 920 MHz, Insertion Loss 1 to 2.5 dB, Rejection 40 dB, VSWR 1.50:1, Center Frequency 917.5 MHz. Tags: Module with Connectors, Cavity Filter. More details for WRCT16-914-915-920-921-40 can be seen below.