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The first thing a good installer must understand is that we can't make signal. We can only process what is there. Chasing a channel is usually not profitable for the installer, and sets up the viewer for dissapointing results. In my installations I thoroughly site check at the installation height, sweep 360 degrees, measure and show all available channels, then install. If there is a reasonable chance of receiving a problematic desired channel I will give it a try, however for me I have adapted a 90/90 rule. 90% of the channels 90% of the time. Makes good business sense and makes most customers very happy.
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