The TRR-4B-1 from GeoSync Microwave is a Test Loop Translator with Downlink Frequency 3.4 to 19.6 GHz (3.4 to 4.2 GHz / 7.25 to 7.75 GHz / 11.45 to 12.2 GHz / 17.7 to 21.2 GHz / 18.2 to 19.6 GHz), Uplink Frequency 5.85 to 30 GHz (5.85 to 6.65 GHz / 7.9 to 8.4 GHz / 13.75 to 14.5 GHz / 27.5 to 31 GHz / 28.6 to 30 GHz), LO Frequency 2.45 GHz / 0.65 GHz / 2.3 GHz / 9.8 GHz / 10.4 GHz, Attenuation Adjustment Range 50 dB. Tags: Multi Band. More details for TRR-4B-1 can be seen below.