The STO-1020305-C-E1 from ERAVANT is a Vector Network Analyzer Extender with Extended Frequency 75 to 110 GHz, Input Frequency 12.50 to 18.33 GHz, LO Frequency 12.50 to 18.33 GHz, Output Power 5 dBm (Test Port), Input Power 0 to 6 dBm (LO), -3 to 3 dBm (RF), 20 dBm (Damage0. More details for STO-1020305-C-E1 can be seen below.