The TRR-8.15-7.4 from GeoSync Microwave is a Test Loop Translator with Downlink Frequency 7.175 to 7.675 GHz, Uplink Frequency 7.9 to 8.4 GHz, LO Frequency 0.725 GHz, Attenuation Adjustment Range 30 dB. Tags: Single Band. More details for TRR-8.15-7.4 can be seen below.