The SWF-27323340-28-H1 from ERAVANT is a Waveguide Filter with Frequency 26.5 to 40 GHz, Insertion Loss 0.5 dB, Operating Temperature -40 to 85 Degree C, Rejection 40 dB, Rejection Frequency DC to 22.5 GHz. Tags: High Pass. More details for SWF-27323340-28-H1 can be seen below.