The TRE-13.7-11.2 from GeoSync Microwave is a Test Loop Translator with Downlink Frequency 10.7 to 11.7 GHz, Uplink Frequency 13.2 to 14.2 GHz, LO Frequency 2.5 GHz, Attenuation Adjustment Range 30 dB. Tags: Single Band. More details for TRE-13.7-11.2 can be seen below.