Quick Answer
Terrain types with dense foliage, tall trees, or significant elevation changes can degrade Meshtastic network performance. Hills and valleys can cause signal loss and interference, while urban canyons can lead to multipath effects. Physical obstacles like buildings and bridges can also disrupt the mesh network.
Terrain Obstacles
Terrain with dense foliage, such as forests, can reduce signal strength and quality due to absorption and scattering of the radio signal. In areas with tall trees, the signal may not reach the LoRa module’s antenna at a sufficient strength to maintain connectivity. Trees with thick canopies can absorb up to 90% of the signal, reducing the network’s overall performance.
Elevation Changes
Hills, valleys, and other significant elevation changes can cause signal loss and interference. As the signal travels over long distances, it can be attenuated by atmospheric conditions, trees, and other obstacles. This can lead to packet loss and dropped connections, degrading the mesh network’s performance. It’s essential to consider terrain elevation when planning a Meshtastic network, taking into account the device’s transmit power and antenna height.
Physical Obstacles
Urban canyons, where tall buildings and bridges create a physical barrier, can cause multipath effects. This occurs when the signal is reflected off surfaces and received by the device, leading to signal interference and decreased network performance. To mitigate this, network planners can consider using directional antennas or adjusting the network’s mesh topology to bypass affected areas.
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