Re: TV question for NatJuly 12 2010 at 9:57 PM
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|Nat (Login Nafana)|
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Response to TV question for Nat
Hi Ken, glad you found us at Potpourri. Digital TV is great- IF you have a good signal. The problem is the FCC greatly underestimated the amount of power it would take for a digital signal to replicate analog coverage. Many (including me) think this underestimation was deliberate because they had to squeeze all the stations that were in 68 channels into 45 channels because chs 52-69 were removed from TV service and chs 2-6 are unsuitable for digital. So with more stations sharing fewer channels the FCC limited power to prevent them from interfering with each other. Add to this- digital TVs are more fussy about the signal they receive- reception problems that only degrade analog TV will completely kill digital.
As for why you can't get some stations during the day- TV signals generally don't go as far during the day because propagation loses are higher and if a digital signal does not reach a certain threshold of strength you don't see (or hear) it at all. Some people have the reverse problem- they can get a station during the day but not at night. In this case it's because a more distant station on the same channel comes in stronger at night and the two signals interfere with each other. With analog the stronger one wins but two signals totally confuse digital decoders and you see nothing.
In short, digital TV can be beautiful when it done right- with a good clear signal, but with marginal signals we were better off with analog.
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