Near field probe is made of premium PCB material, improves service life, which has long durability, High quality and has good performance The antenna is manufactured with precision, stable performance and reliable use. Frequency, phase noise and spectral components can be measured together with a low noise preamplifier. The interface of this PCB electric field antenna is SMA external threaded inner hole, easy to use and install, which can save time and energy. Probe is compact in design, easy to carry and store, and can help find and identify potential sources of interference in the building blocks of electronic components. Magnetic field probe is manufactured in accordance with standard specifications and strictly follows the factory quality control. Item Name: Probe EMC EMI. Working frequency: 9K-3G(When in use, please keep your hands from the PCB board.) Weight: 21 grams. Connector: SMA female (outer tooth inner hole). Note: When in use, please keep your hands from the PCB board. Material:PCB colour:Blue Package Contents: 1 set x Probe Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.