The MLFI-61002 from Micro Lambda Wireless, Inc. is a Tunable Filter with Tunable Frequency 1 to 2 GHz, Bandwidth 25 MHz, Rejection 100 dB, Insertion Loss 6 dB, Supply Voltage 20 to 30 Vdc( Heater Voltage). Tags: Module with Connectors, YIG Filter. More details for MLFI-61002 can be seen below.