The VSTLT-Ka1 / VHTLT-Ka1 from WORK Microwave is a Test Loop Translator with Downlink Frequency 17.7 to 17.9 GHz, Uplink Frequency 27.5 to 27.7 GHz, LO Frequency 9.8 GHz, Attenuation Adjustment Range 30 dB. Tags: Single Band. More details for VSTLT-Ka1 / VHTLT-Ka1 can be seen below.