Understand the installation and use of wireless microwave bridges
In wireless network communication, wireless microwave bridges are an important transmission device, and their installation method is crucial. In order to ensure the stability and efficiency of the bridge, we must fully consider multiple factors in the planning process, including distance, obstacles, and link redundancy.
1、 Factors affecting the effectiveness of microwave bridge usage
Distance and obstacles are the most fundamental considerations in the planning of wireless microwave bridges. When planning the antenna layout for point-to-point links, we must ensure that the antennas are within line of sight to maximize the range and performance of wireless transmission equipment communication. To achieve this goal, we need to conduct on-site investigations and conduct a detailed assessment of all obstacles in the transmission path. These obstacles may include nearby buildings, trees, bridges, and power lines, all of which can interfere with the propagation of radio waves, reduce signal quality, and ultimately affect the performance and coverage of wireless bridges.
We need to focus on the condition of the first Fresnel zone. This is an ellipsoidal region that contains the main energy of radio waves. If most of the first Fresnel zone is blocked, most of the electromagnetic energy of the radio waves will be lost, resulting in a serious decline in signal quality and affecting the performance and coverage of the wireless bridge. Therefore, we must conduct precise analysis of the signal propagation path and obstacles that may hinder the first Fresnel zone to ensure the stability and efficiency of the bridge.
In addition, the installation location and method of the antenna are also important factors in the planning of wireless microwave bridges. When installing antennas, we should try to keep the line of sight clear of obstacles to maximize the transmission range and performance of radio waves. For example, if the bridge is installed above vegetation and forests, we should ensure that the antenna's line of sight remains above the trees; In urban environments, we should install antennas above the highest building on the wireless path. In addition, we also need to consider the installation height and angle of the antenna to ensure that it can effectively receive signals from the opposite antenna.
Meanwhile, we also need to pay attention to the distance between the antenna and other objects. When installing antennas, we should try to stay as far away as possible from other antennas and other objects that may cause interference, for example, it is recommended that the distance between the edges of the antenna be at least 2 meters.
In addition, we should also consider the influence of the reflective surface. If there is no direct clear path between two antennas, radio signals need to be reflected by surfaces, which may be useful in non line of sight situations. However, due to fading caused by multipath propagation, reflection can also reduce signal quality. Therefore, when installing antennas, we need to carefully consider these factors to ensure the stability and efficiency of the bridge.
2、 Suggestions for antenna installation
General recommendations for antenna installation:
1. Try to keep your line of sight clear of obstacles. If installed above vegetation and forests, ensure that the direct line of sight remains above the trees; If in an urban environment, choose the building above the highest wireless path.
2. The impact of trees may vary depending on the season (ice, dew, leaves). In spring and summer, leaves can absorb high levels of radio energy. Therefore, when installing in cold seasons, try to achieve higher attenuation redundancy calculations in forests and trees without leaves.
3. Before installation, ensure that the equipment is located outside the area where water flow and splashes form, as this may have a long-term impact on the protection of the casing.
4. When installing the antenna, try to stay as far away as possible from other antennas (it is recommended that the distance between the edges of the antenna be at least 2 meters).
5. Reflective surfaces (buildings with reflective windows, water surfaces, or damp floors) should be considered. If there is no direct clear path between two antennas, and therefore the radio signal needs to be reflected on the surface, these may be useful in non line of sight situations. However, due to the fading caused by multipath propagation, when encountering reflections along a clear LOS link, reflections can also reduce signal quality.
6. When installing an antenna on the water surface, adjust the height bracket within a range of 1-3 meters, as multipath fading can cause significant changes in signal level.
3、 Precautions for antenna installation
★Changes or modifications that are not explicitly approved by the responsible party for compliance may result in users losing their authority to operate the equipment.
According to Part 15 of the FCC regulations, the device has been tested and meets the limitations of Class B digital devices. These restrictions aim to provide reasonable protection against harmful interference in residential installations. This device generates, uses, and can radiate radio frequency energy. If not installed and used according to the instructions, it may cause harmful interference to radio communication. However, it cannot be guaranteed that interference will not occur during a specific installation. If the device does cause harmful interference to radio or television reception, which can be determined by turning the device off and on, users are encouraged to try one or more of the following measures to correct the interference:
1. Reposition or reposition the receiving antenna.
2. Increase the distance between the device and the receiver.
3. Connect the device to a socket on a circuit different from the one connected to the receiver.
4. Please consult your dealer or experienced radio technician for assistance.
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