The WRCTF12+9-878-880-915-917-40-3 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 880 to 915 MHz, Bandwidth 35 MHz, Insertion Loss 1.5 to 3 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCTF12+9-878-880-915-917-40-3 can be seen below.