Re: not receiving digital over-the-air

NadCixelsyd wrote:
>> I live more than 220 miles by air from Chicago. I have received Channel
>> 7 HD channel a couple of times. My HDTV says it is WLS-HD. Is there two
>> channel 7's in Chicago.
>>
> No, there are not two independant stations on one channel.  However,
> digital TV is bits.  With enough bits, a single station can broadcast
> 4 different programs on the same bandwidth.  The bits are interleaved
> and the TV knows which bits go with which program.
> 
> VHF (channels 2-13) is line-of-sight.  Even with a 1000 foot antenna,
> that's about a 60 mile limit.  UHF is about 1.3 times line-of-sight
> distance.

  You have that backwards. VHF propagates better over the horizon that
UHF.