https://docs.arduino.cc/tutorials/nano-esp32/esp-now
~220m for the ESP to ESP protocol. but 2.4GH wifi can reach pretty far with the right antennas (I've personally been effective at ~2km with an Alfa card and yagi directional antenna)
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This one?
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That looks like cell band. But it could be wifi band.
Look for one that’s 2.4GHz and looks like a pringles can.
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that looks more like what I've used in the past.
