The BLT-5600-DBS-B from Atlantic Microwave is a Test Loop Translator with Downlink Frequency 11700 to 12500 MHz, Uplink Frequency 17300 to 18100 MHz, LO Frequency 5600 MHz, Attenuation Adjustment Range 30 dB. Tags: Single Band. More details for BLT-5600-DBS-B can be seen below.