The WR1.5-VNAX from Virginia Diodes, Inc. is a Vector Network Analyzer Extender with Extended Frequency 500 to 750 GHz, Output Power -25 dBm, Input Power -19/13 dBm, Dynamic Range 80 to 100 dB, Directivity 30 dB. More details for WR1.5-VNAX can be seen below.