Vega BS/User Manual
29
Revision 10 – 02 November 2017
APPENDIX – RECOMMENDATIONS FOR WORKING WITH GATEWAY
ANTENNA MOUNTING RECOMMENDATIONS
The Antenna included in the scope of supply has fasteners for installation on a mast
support. To ensure maximum communication range, follow the installation guidelines for the
antenna:
1. Install the antenna outside, preferably on the roof of the building (the higher - the
better, depending on the surrounding buildings). Installing the antenna in the room
significantly weakens the sensitivity of the antenna.
2. The installation site shall be as far as possible from the cellular antennas. Antenna
tuning requires the maximum distance from other antennas. After tuning and testing, antenna
can be brought back closer to the cellular antennas, if the quality of the communication is
satisfactory.
3. The antenna shall not stand in the close proximity to obstacles (about 2 meters from
railing, walls, etc.). The sensitivity towards the obstacle weakens.
4. The gateway shall be installed in the close proximity to the antenna – at the length of
the antenna coaxial conductor. Increase of the cable length between the antenna and the
gateway will result in a loss of antenna sensitivity.
For example, 25 meters of RG-58 cable attenuate the signal by 14 dBm, i.e. if
transmission power is 14 dBm (25mW), the power on the antenna will be
1mW
5. The antenna directional pattern shall be taken into account. In the horizontal plane,
the antenna has a circular direction, but no vertical direction. Therefore, the quality of
communication directly under the antenna will be worse than at some distance from the
antenna.