The MLFR-0408 from Micro Lambda Wireless, Inc. is a Tunable Filter with Frequency DC to 10 GHz, Tunable Frequency 4 to 8 GHz, Bandwidth 20 MHz, Rejection 40 dB, Input Power 10 to 30 dBm. Tags: Module with Connectors, YIG Filter. More details for MLFR-0408 can be seen below.