The WTRCT8-915.4-921-5-13-60 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 915 to 921 MHz, Bandwidth 5 MHz, Insertion Loss 0.6 dB, Rejection 60 dB, Return Loss 14 dB. Tags: Module with Connectors, Cavity Filter, Notch Filter, Tunable Filter. More details for WTRCT8-915.4-921-5-13-60 can be seen below.