The STO-0520300-C-E1 from ERAVANT is a Vector Network Analyzer Extender with Extended Frequency 150 to 220 GHz, Input Frequency 12.5 to 18.33 GHz, LO Frequency 12.5 to 18.33 GHz, Output Power -5 dBm (Test Port), Input Power -3 to 3 dBm (RF), 0 to 6 dBm (LO), 25 dBm (Damage). More details for STO-0520300-C-E1 can be seen below.
