The BN 225312 from Spinner Group is a VNA Calibration Kit with Frequency DC to 20 GHz, Insertion Loss 0.26 dB, Max Input Power 0.5 W, Operating Temperature 18 to 28 Degree C, Return Loss 25 to 40 dB. Tags: Passive Calibration Kit. More details for BN 225312 can be seen below.