The TRR-14-12 from GeoSync Microwave is a Test Loop Translator with Downlink Frequency 11.7 to 12.45 GHz, Uplink Frequency 13.75 to 14.5 GHz, LO Frequency 2.05 GHz, Attenuation Adjustment Range 30 dB. Tags: Single Band. More details for TRR-14-12 can be seen below.