The WRCA6-389.65-389.95-390.05-390.35-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 389.95 to 390.05 MHz, Bandwidth 0.1 MHz, Insertion Loss 0.5 to 3 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCA6-389.65-389.95-390.05-390.35-50 can be seen below.