Key Specifications. Waveguide Size 1 WR-62 Waveguide Size 2 WR-62 Frequency, Min 13 GHz Frequency, Max 18 GHz Lowband Min Rejection 40. Highpass Waveguide Filter With WR-62 Interface Operating from 13 GHz to 18 GHz. The PE-W62F002 is a WR-62 highpass filter with UG Cover and UG Grooved Flanges. The pass band is 5000 MHz, or 13 to 18 GHz. Implementing a waveguide design, the filter has excellent rejection of 40 dB minimum at 11 GHz, or about 2000 MHz from the band edge. It has a maximum insertion loss of 0.3 dB.