The STO-0820300-R-E1 from ERAVANT is a Vector Network Analyzer Extender with Extended Frequency 90 to 140 GHz, Input Frequency 11.25 to 17.50 GHz, LO Frequency 11.25 to 17.50 GHz, Input Power 0 to 6 dBm (LO), 10 dBm (Damage), Dynamic Range 100 dB. More details for STO-0820300-R-E1 can be seen below.