The VSTLT-Ka / VHTLT-Ka from WORK Microwave is a Test Loop Translator with Downlink Frequency 17.7 to 21.2 GHz, Uplink Frequency 27.5 to 31 GHz, LO Frequency 7 / 18.3 GHz, Attenuation Adjustment Range 30 dB. Tags: Single Band. More details for VSTLT-Ka / VHTLT-Ka can be seen below.