[TechAssist] Re: HDTV outdoor antenna reception

I  must apologize, it appears the first sentence or so was cut off my 
post.  Below is a full repost of what I meant to have sent.  Sorry.


No that is not correct.  Each broadcaster still has the analog channel 
(13 in your example), but has also been assigned a digital channel 
(usually a UHF channel).  Of course the time when the analog licenses 
expire is still being debated.  In our area we do have a channel 13.  
Their digital signal is being transmitted on channel 38.  This was a 
problem for the 1st and 2nd generation HDTV tuners, as they would find 
the signal, but the consumer would have to know what the analog channel 
that matched up with.  Presently, all the HDTV equipment I know of 
converts the digital (ch. 38) to display as 13-1.  The dash and 
following number are the indicator you are watching a digital signal.
Multicasting is a entirely different thing.  We have two very good 
examples in our area.  Analog channel 2 in Baltimore is broadcasting 
digital on UHF channel 52.  Therefore their digital signal appears as 
2-1, because of the tuner conversion.  In addition, they retransmit ABC 
News Now (an ABC National Feed) on  2-2.  This particular TV station 
also owns their own doppler radar , so they transmit that as a live feed 
on 2-3.  Therefore, they are multi casting 3 different things in the 
digital bandwidth they have been allotted.  The PBS station in Baltimore 
is analog ch. 67.  Digital is broacast on UHF  ch. 29.  They multi cast 
4 different feeds during the daytime (67-2, 67-3, 67-4 and 67-5).  
However at night they multi cast only 2  digital channels (67-5 and 
67-6).  This is so, they have the bandwidth available to broadcast on 
full  HDTV (1080i) signal, along with their regular signal converted to 
digital.
Hope they helps you understand it  a little better.

Don's TV wrote:

>(13 in your example), but has also been assigned a digital channel 
>(usually a UHF channel).  Of course the time when the analog licenses 
>expire is still being debated.  In our area we do have a channel 13.  
>Their digital signal is being transmitted on channel 38.  This was a 
>problem for the 1st and 2nd generation HDTV tuners, as they would find 
>the signal, but the consumer would have to know what the analog channel 
>that matched up with.  Presently, all the HDTV equipment I know of 
>converts the digital (ch. 38) to display as 13-1.  The dash and 
>following number are the indicator you are watching a digital signal.
>Multicasting is a entirely different thing.  We have two very good 
>examples in our area.  Analog channel 2 in Baltimore is broadcasting 
>digital on UHF channel 52.  Therefore their digital signal appears as 
>2-1, because of the tuner conversion.  In addition, they retransmit ABC 
>News Now (an ABC National Feed) on  2-2.  This particular TV station 
>also owns their own doppler radar , so they transmit that as a live feed 
>on 2-3.  Therefore, they are multi casting 3 different things in the 
>digital bandwidth they have been allotted.  The PBS station in Baltimore 
>is analog ch. 67.  Digital is broacast on UHF  ch. 29.  They multi cast 
>4 different feeds during the daytime (67-2, 67-3, 67-4 and 67-5).  
>However at night they multi cast only 2  digital channels (67-5 and 
>67-6).  This is so, they have the bandwidth available to broadcast on 
>full  HDTV (1080i) signal, along with their regular signal converted to 
>digital.
>Hope they helps you understand it  a little better.
>
>
>  
>

-- 
Michael Goodwin
Don's  TV
18 W. Main St.
Westminster, MD  21157
(410) 848-6622
FAX  (410) 848-6622
donstv@xxxxxxxxxxxx



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