The TLTH1004 from Peak Communications is a Test Loop Translator with Downlink Frequency 3.4 to 4.2 GHz / 10.95 to 11.7 GHz / 11.70 to 12.25 GHz / 12.25 to 12.75 GHz, Uplink Frequency 5.85 to 6.65 GHz / 13.75 to 14.50 GHz, Attenuation Adjustment Range 0 to 30 dB. Tags: Quad Band. More details for TLTH1004 can be seen below.