The WRCA6-430-433-435-438-60 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 433 to 435 MHz, Bandwidth 2 MHz, Insertion Loss 0.4 to 0.5 dB, Rejection 60 dB, VSWR 1.33:1. Tags: Module with Connectors, Cavity Filter. More details for WRCA6-430-433-435-438-60 can be seen below.