The MLFP-43040 from Micro Lambda Wireless, Inc. is a Tunable Filter with Tunable Frequency 3 to 40 GHz, Bandwidth 30 MHz, Rejection 80 dB, Input Power 10 dBm(Limiting), Insertion Loss 7 dB. Tags: Module with Connectors, YIG Filter. More details for MLFP-43040 can be seen below.