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LoRa Through Concrete: Real-World Parking Sensor Physics
You bought a LoRaWAN board promising 15km range, but your parking sensor can't reach two floors up through concrete and rebar. This episode breaks down exactly what's happening when your signal hits a building — regulatory power limits, sub-band fragmentation, spreading factor tradeoffs, and the brutal attenuation numbers for reinforced concrete. We cover why ADR works against you in parking garages, how duty cycle rules vary by region, and the counterintuitive fixes that actually work: locking SF12, disabling ADR, and antenna placement strategies. If you're building any kind of indoor IoT…
The skinny
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