The TRR-14-12.3 from GeoSync Microwave is a Test Loop Translator with Downlink Frequency 12.0 to 12.75 GHz, Uplink Frequency 13.75 to 14.5 GHz, LO Frequency 1.75 GHz, Attenuation Adjustment Range 30 dB. Tags: Single Band. More details for TRR-14-12.3 can be seen below.