On Sat, 3 May 2008 11:32:41 -0700 (PDT) NadCixelsyd <nadcixelsyd@[EMAIL PROTECTED]
>
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.
VHF goes beyond line of sight more than UHF does.
| The HDTV may think it's the Chicago station, but I doubt it. Does the
| station broadcast its own call letters?
The call letters are included in correctly configured PSIP data.
I used to live in Urbana, IL, which is about 120 miles from Chicago. At
the
time TV was only analog. I did receive a few Chicago stations (7, 9, 11,
32
and 44), snowy but well enough to lock up sync and color ... using rabbit
ears at ground level. It varied from day to day, but something was always
there, and it was watchable about 30% of the time. Living in an apartment
did not give me the option to put up a 20 meter tower and a nice antenna
to
make it permanent. I also got stations from Peoria IL and South Bend IN,
which were all UHF markets.
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