The 03S30R-MSOS3 from Rosenberger is a VNA Calibration Kit with Frequency DC to 26.5 GHz, Max Input Power 0.5 W, Operating Temperature 20 to 26 Degree C, Return Loss 30 to 40 dB, Storage temperature -40 to 85 Degree C. Tags: Passive Calibration Kit. More details for 03S30R-MSOS3 can be seen below.