Introduction：
EFS 9218 is a 300MHz active electric field probe produced by Schwarzbeck, Germany, and is also a small biconical antenna. This antenna is authorized to be sold and quoted by EUTTEST Shenzhen.
This antenna was originally designed to meet the growing demand for small, lightweight receiving antennas to cover the frequency range up to 300 MHz. Since the dipole length is very short compared to the wavelength, the symmetry had to be very high. Therefore, optimal symmetry was the main goal of this development and a very sensitive EMI test receiver had to be used to cover the full sensitivity of the EFS9218 without the use of an internal amplifier. Above 300 MHz we recommend that you choose another small logarithmic antenna with high gain and symmetry.
If you need an electric field probe that can be exchanged for a different type of biconical element, please choose:EFS 9219 New electric field probe with biconical elementUse.
Technical parameters：
<<<<提醒：左右滑动表格>>>>| Model number | EFS 9218 |
| Device name | 300MHz active electric field probe |
| manufacturer | Schwarzbeck |
| agent | Shenzhen EUTTEST |
| Test frequency range | 9kHz-300MHz |
| impedance | 50Ω |
| connector | N-shape |
| Antenna pole diameter | 22 mm |
| Antenna Size | 140 mm * 49 mm |
| radiance factor | 20 dB/m - 47 dB/m |
| Maximum test electric field strength | 65 V/m |
| Minimum test electric field strength | 3 V/m |
| Minimum measurable electric field strength | 12μV/m |
| internal battery | 600mAh, operating time >5 hours |
| weight | 1 kg |
| Optional accessories | ACS 410: Charger |
Charging Instructions:
The batteries in the EFS 9218 have a very low internal resistance value and are protected by a fuse, but in the event of a short circuit between the batteries, the insulation between the batteries burns out leading to a permanent internal short circuit, generating more heat. A damaged fuse will not prevent serious damage to the probe, so avoid shorting the charging connector by never opening the probe or charging it with inappropriate charging equipment.
Optional charging connector option DC-jack
