The MLUN-0502 from Micro Lambda Wireless, Inc. is a Tunable Filter with Frequency DC to 3 GHz, Tunable Frequency 500 MHz to 2 GHz, Bandwidth 5 MHz, Rejection 40 to 50 dB, Input Power 5 to 28 dBm. Tags: Module with Connectors, YIG Filter. More details for MLUN-0502 can be seen below.