The TRR-8.15-7.5 from GeoSync Microwave is a Test Loop Translator with Downlink Frequency 7.25 to 7.75 GHz, Uplink Frequency 7.9 to 8.4 GHz, LO Frequency 0.65 GHz, Attenuation Adjustment Range 30 dB. Tags: Single Band. More details for TRR-8.15-7.5 can be seen below.