Sub-GHz frequencies are inherently better suited for many applications where low data rates (>1-10 Mbps) are used. The advantages come directly from physical laws.
Achieve Long Range (> 1 km) communication without relying on cellular technologies
Penetration of walls and ceilings allows reliable indoor communication without relying on tricks such as mesh networks and repeaters
Less attenuation due to atmosphere, foliage and non-reliance on RF reflection results in reliable extreme long range outdoor communication
Lower frequencies result in lower power consumption allowing longer battery life and/or a smaller battery
Sub-GHz allows both indoor and outdoor communication over a large area. One example of an application that greatly benefits from Sub-GHz technology is smart metering.
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