The 64K30R-MSOTS3 from Rosenberger is a VNA Calibration Kit with Frequency DC to 12 GHz, Max Input Power 1 W, Operating Temperature 20 to 26 Degree C, Return Loss 20 to 40 dB, Storage temperature -40 to 85 Degree C. Tags: Passive Calibration Kit. More details for 64K30R-MSOTS3 can be seen below.