Into the Field

Everything to this point worked on the bench and in the driveway. That is the easy place for a radio to work. The real test was driving out of range and finding out what actually reaches home.

The answer was humbling. A couple of miles out, both mesh networks went quiet. The station heard nothing. The assumption had been that local repeaters would relay a message home, and the station’s own records said otherwise: the nearest node it had ever heard was far enough away that nothing local was carrying anything.

That is a real lesson about coverage, and it is worth sitting with: being out of range of your own station a short drive from home is an antenna and siting problem, not a missing-infrastructure problem.

The fix was not more radios. It was a different path. The command gateway was bridged to the internet, so a command sent from the field, with no RF path to home at all, reached the station over a broker and came back answered, on the same encrypted channel, with no infrastructure in between. The full account, including the two bugs it took to get the reply flowing, is here: Command and Control From Out of Range.

The takeaway for the whole project: build every path to have a fallback, and be honest about which ones actually work in the field versus on the bench.

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