The BLT-0650-X from Atlantic Microwave is a Test Loop Translator with Downlink Frequency 7.25 to 7.75 GHz, Uplink Frequency 7900 to 8400 MHz, LO Frequency 650 MHz, Attenuation Adjustment Range 30 dB. Tags: Single Band. More details for BLT-0650-X can be seen below.