The FMSP1048 from Fairview Microwave is a RF Surge Protector with Frequency 2 to 6 GHz, Input Power 10 W, Insertion Loss 0.1 to 0.2 dB, Operating Temperature -40 to 85 Degree C, Return Loss 20 dB. Tags: Filter. More details for FMSP1048 can be seen below.