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(5) Chose high quality product. Rotate the rotating shell of the connecting
part but not the entire body while installation. Press the main body of the
socket and tighten the screw to make the surface connect seamlessly. The
connector must be rotated until tightened before usage, as any shaking could
damage the core, even loosening the connection between the socket and the
motherboard.
Additional attention should be paid to the quality and physical
stability of the antenna when an antenna is directly connected. Antennas with
poor quality, though steady and still as it seems, their core pins tend to exert
torque on the core when the antenna bends, which would definitely threat the
reliability of the connector.
4.3 Antenna
4.3.1 Outdoor Antenna
The robustness of the antennas against thunder and static electricity
should be taken into consideration when choosing the outdoor antennas. A
DC grounded antenna is relatively safer. Before connecting a large size short
wave antenna, the static electricity must be discharged first, especially in a
windy weather.
In circumstances with complicated environment, narrow-band antennas
should be preferred. In city environment, the total RF power of outdoor wide-
band antennas can reach as high as 0dBm above. In this situation, the
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