I did see the chart of the voltage measure on the foil. It increases as the humidity increases. Perhaps I'm reading something into this but it seems to me this is indicating an increase in transmitted power. I don't think it is any secret that RF signals propagate farther when it's cloudy. In my basement the build up of static is an indication of low relative humidity, usually below 40%. Realistically speaking I doubt I will have this problem with a layout of 22 x 10.
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