The MLFP-41840 from Micro Lambda Wireless, Inc. is a Tunable Filter with Tunable Frequency 18 to 40 GHz, Bandwidth 50 MHz, Rejection 80 dB, Input Power 10 dBm(Limiting), Insertion Loss 5 dB. Tags: Module with Connectors, YIG Filter. More details for MLFP-41840 can be seen below.