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What no modern (ATSC) set has ... and all need! ... is an on-screen
spectrum analysis. Its easy to tell people how to adjust their antenna.
Just say "try to get the whole thing above the bar (the bar is at say 17 dB S/N)
but its far more important to get rid of dips than get it really big." I've tried this
with newbies using my spectrum analyzer and they have no problems.
The cost of this is zero. Its about 300 lines of computer code. One Fourier
transform and the display code.
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