RF (antenna) cable passes HDTV signal?

I know it's going to sound like a strange and silly question,
but: does the RF cable carry an HD signal? If so, any
limitations? (other than the obvious "lower quality" --
what I mean is, any specific specs in which the limitations
make the quality lower?)

I see the little Viewsonic 27inch LCD TV, and it has two
RF connectors on the back -- if memory serves, one says TV
and one says DTV (what would DTV mean?).

And my HD receiver/PVR has two RF connectors as well, though
it's not perfectly clear what their purpose is.

Again, in case someone wants to insist in saying: "use some
other higher-quality connection"; the thing is, the little
TV is to be connected in place far far far away from the
receiver, and I do have several points accross the house
that the RG-60 cable reach.

I just want to know if the thing *does* work, and if I
should expect a resonable quality (say, maybe something
comparable to a DVD watched on a good quality non-HD TV
set).

Thanks for any comments,

Carlos
--

On Thu, 05 Oct 2006 06:08:31 -0400, "Elmo P. Shagnasty"
wrote:

All television is carried on known frequencies that have been
established for many years. All TV antennae are designed around those
frequencies,

I normally don't call folks on spelling but in this instance and in
this group, I just have to!

Insects use antennae
People use antennas

Look it up. :-)

"Carlos Moreno" wrote in message
...

I know it's going to sound like a strange and silly question,
but: does the RF cable carry an HD signal? If so, any
limitations? (other than the obvious "lower quality" --
what I mean is, any specific specs in which the limitations
make the quality lower?)

Sounds like the scammers at monster cable need to start selling digital
antenna cable...I can't wait to eavesdrop and hear the bestbuy sales ******
eanestly explaining why the expensive monster digital rf cable is so much
better (and worth every penny!) than that old analog rf cable.


I see the little Viewsonic 27inch LCD TV, and it has two
RF connectors on the back -- if memory serves, one says TV
and one says DTV (what would DTV mean?).

And my HD receiver/PVR has two RF connectors as well, though
it's not perfectly clear what their purpose is.

Again, in case someone wants to insist in saying: "use some
other higher-quality connection"; the thing is, the little
TV is to be connected in place far far far away from the
receiver, and I do have several points accross the house
that the RG-60 cable reach.

I just want to know if the thing *does* work, and if I
should expect a resonable quality (say, maybe something
comparable to a DVD watched on a good quality non-HD TV
set).

Thanks for any comments,

Carlos
--

Carlos Moreno wrote:
I know it's going to sound like a strange and silly question,
but: does the RF cable carry an HD signal? If so, any
limitations? (other than the obvious "lower quality" --
what I mean is, any specific specs in which the limitations
make the quality lower?)

I see the little Viewsonic 27inch LCD TV, and it has two
RF connectors on the back -- if memory serves, one says TV
and one says DTV (what would DTV mean?).

And my HD receiver/PVR has two RF connectors as well, though
it's not perfectly clear what their purpose is.

Again, in case someone wants to insist in saying: "use some
other higher-quality connection"; the thing is, the little
TV is to be connected in place far far far away from the
receiver, and I do have several points accross the house
that the RG-60 cable reach.

I just want to know if the thing *does* work, and if I
should expect a resonable quality (say, maybe something
comparable to a DVD watched on a good quality non-HD TV
set).
....

I may be wrong, but I think some of the earlier posters misunderstood
your question. If you are asking, "Can I use the RF out of the PVR to
connect to the TV and still watch recorded HD?", then the answer is
"Yes." *But* the quality will be no better than a good analogue
antenna signal. On a small set, from some reasonable distance, you
probably won't mind...unless you've gotten used to HD, then you
will be quite dissatisfied. } All you probably have to do is the
usual
old "use Channel 3 or use Channel 4" thing. Oh, I have a different
"odd ball" configuration: an analogue 32" TV fed from an OTA Digital
tuner. The result is probably the best analogue you'll ever see, but
it still doesn't compare to a digital TV. } Still it's very
watchable.

As for the two RF inputs, there could be a couple of possibilites:
1 Antenna (Analogue or Digital) and 1 Cable TV
1 Analogue Antenna and 1 Digtal Antenna or Cable TV
1 Analogue Antenna and 1 Digital Antenna
Your instruction manual should give you some idea which is correct.

Dan (Woj...)

Elmo P. Shagnasty wrote:

I know it's going to sound like a strange and silly question,
but: does the RF cable carry an HD signal?

The RF cable carries the electromagnetic radiation and transmits it from
the antenna to the receiver.

As much as you might be surprised, I know that :-)

I see now that my question (mostly, the subject line) was grossly
misphrased :-)

What I was trying to ask is whether or not *actual* electronic
devices decide to feed a HD signal (i.e., 16:9, 720 lines, or at
the very least 480p) through the RF connector.

In other words, my question boils down to:

I have my HD receiver (satellite receiver, with PVR option), and
it has an RF output; the small TV set that I saw (Viewsonic N2752w)
has two RF input connectors. If I connect the output from my
receiver to the TV set, will it work? Will I be able to watch
HD material, either live or recorded? Or will it simply send a
"down-converted" signal of some sort?

Before you again think I'm totally clueless -- consider why the
question (I mean, having the doubt) can make sense: take the
example of progressive scan signal -- if I'm not mistaken, you
have to sue the component video connection (or at least the
S-Video -- though not 100% sure about this one) if you want to
benefit from it; if you use the Composite viedo connector, you
don't get progressive signal. What this tells me is that
different interfaces have different limitations, be it that
there is a technical reason that imposes the limitation, or
that it is that the manufacturers/engineers arbitrarily
decide that for an interface with low-capability it's not
worth to even bother to feed a signal with higher-quality.

My doubt is that maybe the engineers that design these things
might simply consider that th RF quality is so low that it's
not even worth bothering sending an HD signal through it;
since the receiver is both HD and regular TV, maybe I'll
get the bad surprise that when I connect my TV set through
the RF cable, I will only see the non-HD channels.

And the bother is that no specs that I can find (I went to
Viewsonic's web site) do say explicitly -- makes sense, as
they are to assume that my question won't even be asked;
that no-one would even bother to find out, since everyone
would choose to connect them using the component video or
HDMI. (kind of "why do you want to know if you can use the
RF cable when you can and should use the component video
or the HDMI connections?")

Am I making sense now?

Thanks,

Carlos
--

No. The RF connector operates on NTSC standards, and is only capable of
providing NTSC SD television. I.e., 480i TV. Any given device, i.e., a
HD set top box, coulkd receive a HD signal, convert or downrez it to
480i, and output that over the RF connector as a SD NTSC signal.

Carlos Moreno wrote:



As much as you might be surprised, I know that :-)

I see now that my question (mostly, the subject line) was grossly
misphrased :-)

What I was trying to ask is whether or not *actual* electronic
devices decide to feed a HD signal (i.e., 16:9, 720 lines, or at
the very least 480p) through the RF connector.

In other words, my question boils down to:

I have my HD receiver (satellite receiver, with PVR option), and
it has an RF output; the small TV set that I saw (Viewsonic N2752w)
has two RF input connectors. If I connect the output from my
receiver to the TV set, will it work? Will I be able to watch
HD material, either live or recorded? Or will it simply send a
"down-converted" signal of some sort?

Before you again think I'm totally clueless -- consider why the
question (I mean, having the doubt) can make sense: take the
example of progressive scan signal -- if I'm not mistaken, you
have to sue the component video connection (or at least the
S-Video -- though not 100% sure about this one) if you want to
benefit from it; if you use the Composite viedo connector, you
don't get progressive signal. What this tells me is that
different interfaces have different limitations, be it that
there is a technical reason that imposes the limitation, or
that it is that the manufacturers/engineers arbitrarily
decide that for an interface with low-capability it's not
worth to even bother to feed a signal with higher-quality.

My doubt is that maybe the engineers that design these things
might simply consider that th RF quality is so low that it's
not even worth bothering sending an HD signal through it;
since the receiver is both HD and regular TV, maybe I'll
get the bad surprise that when I connect my TV set through
the RF cable, I will only see the non-HD channels.

And the bother is that no specs that I can find (I went to
Viewsonic's web site) do say explicitly -- makes sense, as
they are to assume that my question won't even be asked;
that no-one would even bother to find out, since everyone
would choose to connect them using the component video or
HDMI. (kind of "why do you want to know if you can use the
RF cable when you can and should use the component video
or the HDMI connections?")

Am I making sense now?

Thanks,

Carlos
--

On Thu, 05 Oct 2006 12:14:20 -0400, Carlos Moreno wrote:

What I was trying to ask is whether or not *actual* electronic
devices decide to feed a HD signal (i.e., 16:9, 720 lines, or at
the very least 480p) through the RF connector.

I don't believe there are any or many that do.

In other words, my question boils down to:

I have my HD receiver (satellite receiver, with PVR option), and
it has an RF output; the small TV set that I saw (Viewsonic N2752w)
has two RF input connectors. If I connect the output from my
receiver to the TV set, will it work? Will I be able to watch
HD material, either live or recorded? Or will it simply send a
"down-converted" signal of some sort?

Any external tuner, STB, etc. should be connected according to the
instructions for that device and the TV. So, check the manual of your HD
receiver and see if it puts out what you need. Or just try it and see, but
more than likely it's not HD. Normally, you use either component, HDMI,
DVI, or VGA for HD signals. Connect your external antenna to both the TV
and DTV Rf connectors on the TV using a splitter. That gives you 3
seperate choices of content, the sat receiver, regular NTSC analog Tv, and
digital ATSC TV. If you have another device liek a dvd player or vcr,
connect it via the composite inputs to the Tv (A/v or S-video).

Before you again think I'm totally clueless -- consider why the question

I didn't respond to your first port because it was too vague. This one is
a little clearer.

--
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Carlos Moreno wrote:

I know it's going to sound like a strange and silly question,
but: does the RF cable carry an HD signal? If so, any
limitations? (other than the obvious "lower quality" --
what I mean is, any specific specs in which the limitations
make the quality lower?)

I see the little Viewsonic 27inch LCD TV, and it has two
RF connectors on the back -- if memory serves, one says TV
and one says DTV (what would DTV mean?).

And my HD receiver/PVR has two RF connectors as well, though
it's not perfectly clear what their purpose is.

Again, in case someone wants to insist in saying: "use some
other higher-quality connection"; the thing is, the little
TV is to be connected in place far far far away from the
receiver, and I do have several points accross the house
that the RG-60 cable reach.

I just want to know if the thing *does* work, and if I
should expect a resonable quality (say, maybe something
comparable to a DVD watched on a good quality non-HD TV
set).

Thanks for any comments,

Carlos
--

What are the labels on the Digital Video Recorder's coax ports? Any
explanation in the DVR's user manual? This is more an issue of what the
DVR is designed to to rather than the cable's abilities.

Any video signal on the RF output of a recording device may be
restricted to Standard Definition in connection with Digital Rights
Management considerations.

I see why you momma named you Elmo.
"Elmo P. Shagnasty" wrote in message
...
In article ,
Carlos Moreno wrote:

I know it's going to sound like a strange and silly question,
but: does the RF cable carry an HD signal?

The RF cable carries the electromagnetic radiation and transmits it from
the antenna to the receiver.

If the EMR is of a frequency that the receiver can work with, then the
receiver will work with it.

All television is carried on known frequencies that have been
established for many years. All TV antennae are designed around those
frequencies, and the coax can carry those frequencies.

This is completely separate from what's in the EMR. The coax doesn't
care what's in the EMR--whether it's picture, sound, the two combined,
whatever. Similarly, it doesn't care if digital information is encoded
within that electromagnetic information.

Digital TV (and its subset, HDTV) is broadcast--analog, via
electromagnetic radiaion, as all radio waves are--on established
broadcast frequencies that all TV antennae and coax cable are designed
for.

What the receiver does with the radio waves is the business of the
receiver, not the coax cable or the receiving antenna.


In a nutshell: there is no such thing as an HD signal. There are only
radio waves on various frequencies. Digital TV is carried to the
consumer using the same radio waves and same frequencies as the TV we've
been seeing for decades.

"Elmo P. Shagnasty" wrote in message
...
In article ,
Carlos Moreno wrote:

I know it's going to sound like a strange and silly question,
but: does the RF cable carry an HD signal?

The RF cable carries the electromagnetic radiation and transmits it from
the antenna to the receiver.

If the EMR is of a frequency that the receiver can work with, then the
receiver will work with it.

All television is carried on known frequencies that have been
established for many years. All TV antennae are designed around those
frequencies, and the coax can carry those frequencies.

This is completely separate from what's in the EMR. The coax doesn't
care what's in the EMR--whether it's picture, sound, the two combined,
whatever. Similarly, it doesn't care if digital information is encoded
within that electromagnetic information.

Digital TV (and its subset, HDTV) is broadcast--analog, via
electromagnetic radiaion, as all radio waves are--on established
broadcast frequencies that all TV antennae and coax cable are designed
for.

What the receiver does with the radio waves is the business of the
receiver, not the coax cable or the receiving antenna.
...

What about coax accessories? When I bought a
coax splitter at The Source recently, the salesman
warned me that it was good only for analog, not
for digital. Was he full of it, or is there a genuine
issue?