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The J-pole mount came in a separate shipment. The elevation of the highest crest in the direct line to the Mt. Wilson antennas is about 7 degrees. I set the J-pole to provide 7 degrees of elevation and mounted it to the top of the existing 6-foot mast with the antenna mounted to the top of the J-pole. Not much difference. I lost channel 13, which was weak. Several other channels lost around 2dB SNR, and one already strong station gained 3dB. So I took the J-pole out. Given that the J-pole is painted, I doubt that the antenna boom was electrically connected to the mast, as it was when it was mounted directly to the mast. Would that matter?
I won't be able to wander around the roof looking for hot spots until this weekend when I will have an assistant to watch the signal meter on the TV.
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