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Phone man,
I tried the XG in two places.
First I had the whole setup on the ground just to confirm that I had all the pieces and that everything worked. No point waiting until it's all up in the air to find out that a piece of coax or whatever is bad.
The signal analysis showed somewhat stronger signals at 10' than at rooftop height (40'). Any RF simulation will have its limits and I was skeptical of this particularly given the row of buildings to the north and also the difficult-to-model effects of Manitou Hill.
I don't have any useful way to measure signal strength but judging by the differences in what stations I can receive clearly I believe there was an overall 10 dB improvement in signal with the move to the roof.
I was satisfied with what the XG was doing in its first location and so I didn't experiment with tilt, height, or azimuth adjustments. It has a very slight uptilt, 5 degrees at most, which probably doesn't do anything since the the front lobe is larger than that.
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