The ATLT-400 from Advantech Wireless Technologies is a Test Loop Translator with Downlink Frequency 5.85 to 31 GHz (5.85 to 6.425 GHz / 7.9 to 8.4 GHz / 14.0 to 14.5 GHz / 30 to 31 GHz), Uplink Frequency 3.625 to 21.2 GHz (3.625 to 4.200 GHz / 7.250 to 7.675 GHz / 11.70 to 12.20 GHz / 20.20 to 21.20 GHz), Attenuation Adjustment Range 50 dB. Tags: Quad Band, Multi Band. More details for ATLT-400 can be seen below.