The TLR-28.475 from GeoSync Microwave is a Test Loop Translator with Downlink Frequency 0.95 to 1.2 GHz, Uplink Frequency 28.35 to 28.6 GHz, LO Frequency 27.4 GHz, Attenuation Adjustment Range 30 dB. Tags: Single Band. More details for TLR-28.475 can be seen below.