The TLT1004 from Peak Communications is a Test Loop Translator with Downlink Frequency 3.4 to 12.75 GHz(3.4-4.2GHz / 10.95-11.7GHz / 11.70-12.25GHz / 12.25-12.75GHz), Uplink Frequency 5.85 to 14.5 GHz(5.85-6.65GHz / 13.75-14.50GHz), Attenuation Adjustment Range 30 dB. Tags: Multi Band. More details for TLT1004 can be seen below.