[TechAssist] Re: HDTV outdoor antenna reception
- From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Tue, 30 Nov 2004 10:19:05 -0500
It does.
But do you see the potential nightmare for all my senior customers that
still have an issue with "... OK the box puts out on chan. 3, but I
want to record with my VCR a chan. 13 movie, but I don't set the VCR to
13? Why?.. I want 13...I get a blue screen...And how do I get sound
again with the surround amp on VCR but not cable?"
Oh, God. I'll need a full time instructor to man the phone.
;-)
Phil Bader
Don's TV wrote:
>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.
>
>
>
>Phil Bader wrote:
>
>
>
>>As I understand HDTV broadcast, if I am viewing VHF channel 13, say, in
>>normal mode I am watching channel 13 on a VHF carrier. But if channel 13
>>is simul-broadcasting in HDTV, If I wish to see the channel 13 program
>>in HD, and select the set to do so, the set automatically goes to a
>>predetermined UHF frequency that chan. 13 uses to transmit HD. Is this
>>correct? (as opposed to an additional VHF carrier piggybacking over the
>>normal VHF info)
>>Correct?
>>Using channel 13 as my example, I thought if I had a good antenna
>>capable of recieving a strong ch. 13 VHF signal, then I would also
>>automatically get a good ch. 13 HDTV signal as well.
>>Phil Bader
>>
>>Don's TV wrote:
>>
>>
>>
>>
>>
>>>We've had good success with UHF multi-bay antennas. Of course, all the
>>>broadcasters in our area (Baltimore/Washington) are on the UHF band.
>>>The signal is definitely much more directional, so a motor is almost a
>>>necessity. It must be nice to receive signals from 100 miles away.
>>>With the terrain we have in our area (rolling hills and many trees),
>>>we're fortunate to receive from much more than 60 miles. Trees have
>>>been no trouble for us, not the problem they are for DIRECTV, but we
>>>have very few pine trees. The other surprising thing is how much
>>>tweaking and adjust our broadcasters do. We've had some digital
>>>signals on the air for over 3 years now. One day the signal will be
>>>great, but the next day no signal at all. Many broadcasters in our area
>>>are testing or have gone to multicasting. I believe this is probably
>>>why there has been the issues with the signals being on/off.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>
>
>
--
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
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