The 600 Series from L-3 Narda-ATM are Fixed Waveguide Attenuators that operate from 18.3 to 31 GHz (18.3 - 20.2 GHz for downlink and 27.5 - 31.0 GHz for uplink applications). The attenuators have a fixed attenuation level of 3, 6, 10, 20 and 30 dB. They have a VSWR of less than 1.20:1 and can handle an input power of 1 watt. These Ka-band waveguide attenuators are available in various waveguide sizes from WR28 through WR51 options and have a length of 3-inches.
