The EFS 9221 is an active, symmetrical biconical antenna with a wide frequency range of more than 5 decades and a remarkable flat frequency response.
In contrast to the frequently used unsymmetrical vertical monopole or rod antennas the EFS 9221 allows precise fieldstrength measurements, thanks to a very high common mode rejection. Because of its small dimensions and a built in rechargeable battery the EFS 9221 is a perfect choice for portable applications. The sensitivity can be improved by approx. 12 dB using the optional BBUK 9139 4MM biconical elements.
| Frequency Range: | 9 kHz – 1 GHz |
| Nominal Impedance: | 50 Ω |
| Antenna Factor: | typ. 30-32 dB/m |
| Deviation from Omnidirectional Pattern: | typ. < 1.5 dB |
| Fielstrength measuring range: | ~ ≤15 V/m |
| VSWR: | < 2 |
| Dimensions: | 610 x 144 x 50 |
| Mounting | 22 mm |
| Weight: | 780 g |
| Connector: | N female |
| Option: High Sensitivity | BBUK 9139 4MM |
| Option: Automatic Charger | ACS 110 |
