The ATN-W-62500-5000-6-15 from Exceed Microwave is a V-band waveguide attenuator that operates from 58 to 67 GHz. It has a nominal attenuation of 6 dB and a return loss of less than 12 dB. The attenuator has a WR-15 waveguide size and has a very short length of 0.250 inches.