Handheld probe to measure magnetic field radiation, 30MHz - 1GHz The Agilent (now Keysight) 11940A is a hand-held probe specially designed to measure magnetic field radiation from surface currents, slots, cable, and ICs for EMC diagnostic and troubleshooting measurements. Its unique design results in a high level of electric field rejection. This significantly reduces errors allowing calibrated and repeatable measurements. Each probe is calibrated and comes with a two-meter, RG-223 coaxial cable, an SMA (f) to Type-N (m) adapter, and an SMA (f) to BNC (m) adapter. Features: Measures magnetic field radiation from surface currents, slots, cables and ICs High level of electric field rejection Allows calibrated and repeatable measurements Maximum Input Power: 0.5 watts Temperature Range: Variation over 0° C to +40° C Dielectric Breakdown: ±1 kV, typical Connector Type: SMA, replaceable barrel VSWR:< 3:1, typical Antenna Factor Accuracy: Individually calibrated to within ±2 dB in a 377 ohm field impedance