Matthew L. Martin ) wrote in alt.tv.tech.hdtv:
Virtually
everyone who has tried to receive ATSC and reported here has had
excellent results.

The few who have not had success also report having very poor NTSC
reception. Other reports of poor reception come from cases of
co-location of high power NTSC and low power ATSC broadcasts or other
reasons that have more to do with transition than modulation.

Two interesting stories:

The local PAX and WB are unwatchable for me on analog. Partly this is
because their antennas are not clustered with the rest, and so I am not
pointed at them. Even if I point at them, though, I wouldn't watch signals
that bad no matter how important the show. Their ATSC channels, though,
are just fine. The WB station is digital 51 at 125kW and analog 50 at
2450 kW, with both broadcasting from the same tower. Both co-location
*and* adjacent channels, and digital is better than analog. PAX doesn't
have adjacent channels, but the transmitters are co-located, with channel
66 analog at 3400kW and channel 43 digital at 90kW.

Second, a guy down the street from me was having problems with one digital
station, and I was just fine. We're in the path of hurricane Isabel, so
we both took down our outside antennas, and he hooked up a Zenith Silver
Sensor indoor antenna temporarily. When he did, the problem channel was
fine. After looking at the outdoor antenna, it turns out something was
wrong with it that apparently caused problems with just that one channel.

--
Jeff Rife |
301-916-8131 | http://www.nabs.net/Cartoons/OverThe...ortOfKings.gif

My gut feeling is that the breakthrough price for OTA receivers
as a separate component would be about $200.



I think this is probably correct. The cost is more of problem than
the modulation any day of the week. These STBs cost a lot due to
expensive MPEG2 decoding hardware, not the modulation scheme.
Australian COFDM HDTV STBs cost as much as US ones.

My gut feeling is that the breakthrough price for OTA receivers
as a separate component would be about $200.



I think this is probably correct. The cost is more of problem than
the modulation any day of the week. These STBs cost a lot due to
expensive MPEG2 decoding hardware, not the modulation scheme.
Australian COFDM HDTV STBs cost as much as US ones.

"Bozo the Clown" wrote in message
om...
My gut feeling is that the breakthrough price for OTA receivers
as a separate component would be about $200.



I think this is probably correct. The cost is more of problem than
the modulation any day of the week. These STBs cost a lot due to
expensive MPEG2 decoding hardware, not the modulation scheme.
Australian COFDM HDTV STBs cost as much as US ones.

Australian COFDM DVB-T receivers cost a lot because the market is miniscule,
total of less than 4 million homes, and because they have a 7 MHz channel
size where most of the world has 6 MHz or 8 MHz.

Very few manufacturers have therefore built receivers for OZ.

If we were COFDM in the US for HDTV receivers would cost under $200 NOW. And
I am sure there would be one at $75. Pace promised Congress in June of 2000
$200 HDTV COFDM receivers by Christmas of 2000 if COFDM were allowed in the
US.

Modulation has lots to do with it. And that is before you count the cost of
antennas and rotors as compared to antennas for COFDM that work on cell
phones.

"Bozo the Clown" wrote in message
om...
My gut feeling is that the breakthrough price for OTA receivers
as a separate component would be about $200.



I think this is probably correct. The cost is more of problem than
the modulation any day of the week. These STBs cost a lot due to
expensive MPEG2 decoding hardware, not the modulation scheme.
Australian COFDM HDTV STBs cost as much as US ones.

Australian COFDM DVB-T receivers cost a lot because the market is miniscule,
total of less than 4 million homes, and because they have a 7 MHz channel
size where most of the world has 6 MHz or 8 MHz.

Very few manufacturers have therefore built receivers for OZ.

If we were COFDM in the US for HDTV receivers would cost under $200 NOW. And
I am sure there would be one at $75. Pace promised Congress in June of 2000
$200 HDTV COFDM receivers by Christmas of 2000 if COFDM were allowed in the
US.

Modulation has lots to do with it. And that is before you count the cost of
antennas and rotors as compared to antennas for COFDM that work on cell
phones.

On Thu, 18 Sep 2003 11:26:25 GMT, Matthew L. Martin wrote:

The few who have not had success also report having very poor NTSC
reception. Other reports of poor reception come from cases of
co-location of high power NTSC and low power ATSC broadcasts or other
reasons that have more to do with transition than modulation.

Not to mention the 489 threads where someone is trying to get signals that
are almost always UHF with VHF rabbit ears.

--
-BB-
To reply to me, drop the attitude (from my e-mail address, at least)

On Thu, 18 Sep 2003 11:26:25 GMT, Matthew L. Martin wrote:

The few who have not had success also report having very poor NTSC
reception. Other reports of poor reception come from cases of
co-location of high power NTSC and low power ATSC broadcasts or other
reasons that have more to do with transition than modulation.

Not to mention the 489 threads where someone is trying to get signals that
are almost always UHF with VHF rabbit ears.

--
-BB-
To reply to me, drop the attitude (from my e-mail address, at least)

"Bob Miller" wrote in message
link.net...
:
: "Bozo the Clown" wrote in message
: om...
: My gut feeling is that the breakthrough price for OTA receivers
: as a separate component would be about $200.
:
:
:
: I think this is probably correct. The cost is more of problem than
: the modulation any day of the week. These STBs cost a lot due to
: expensive MPEG2 decoding hardware, not the modulation scheme.
: Australian COFDM HDTV STBs cost as much as US ones.
:
: Australian COFDM DVB-T receivers cost a lot because the market is miniscule,
: total of less than 4 million homes, and because they have a 7 MHz channel
: size where most of the world has 6 MHz or 8 MHz.
:
: Very few manufacturers have therefore built receivers for OZ.
:
: If we were COFDM in the US for HDTV receivers would cost under $200 NOW. And
: I am sure there would be one at $75. Pace promised Congress in June of 2000
: $200 HDTV COFDM receivers by Christmas of 2000 if COFDM were allowed in the
: US.
:
: Modulation has lots to do with it. And that is before you count the cost of
: antennas and rotors as compared to antennas for COFDM that work on cell
: phones.
:
=============
Why don't you just move to one of the countries that uses your beloved COFDM?
=============

"Bob Miller" wrote in message
link.net...
:
: "Bozo the Clown" wrote in message
: om...
: My gut feeling is that the breakthrough price for OTA receivers
: as a separate component would be about $200.
:
:
:
: I think this is probably correct. The cost is more of problem than
: the modulation any day of the week. These STBs cost a lot due to
: expensive MPEG2 decoding hardware, not the modulation scheme.
: Australian COFDM HDTV STBs cost as much as US ones.
:
: Australian COFDM DVB-T receivers cost a lot because the market is miniscule,
: total of less than 4 million homes, and because they have a 7 MHz channel
: size where most of the world has 6 MHz or 8 MHz.
:
: Very few manufacturers have therefore built receivers for OZ.
:
: If we were COFDM in the US for HDTV receivers would cost under $200 NOW. And
: I am sure there would be one at $75. Pace promised Congress in June of 2000
: $200 HDTV COFDM receivers by Christmas of 2000 if COFDM were allowed in the
: US.
:
: Modulation has lots to do with it. And that is before you count the cost of
: antennas and rotors as compared to antennas for COFDM that work on cell
: phones.
:
=============
Why don't you just move to one of the countries that uses your beloved COFDM?
=============

"Bob Miller" wrote in message news:htcab.34522

I have a Yagi antenna aimed at the Empire State Building...

Sure you do.

COFDM is a joke in England, did you know that?

HERE are some more snippets from British postings on well-known COFDM
interference problems, in the last 4 months.

All of these can cause loss of picture/reception:
--------------------------------------------------

"Refrigerators, passing motorcycles,

mopeds, loose AC plugs, heating thermostats,

halogen lamps, kitchen appliances, passing vehicles,

battery-powered remote-control toys."



Atmospherics, washing machines, sewing machines,

personal computers, dodgy street lamps,

fish tank heaters, high frequency lighting ballast,

sunlamps"



whew.



Marginal-reception-area,

"try tilting the aerial upwards away from passing vehicles".



Some mo

"white sparkles on screen, picture freezes,

wavey effect on the picture, signal cuts out,

ferrite beads may help",

"attenuation along path to receiver,

free space loss/rain/snow/obstructions

(ie hills/buildings/trees), receive antenna gain,

loss of downlead co-ax, gain/sensitivity of receiver front end,

how receiver translates this signal level."

----------------------------------------------------

COFDM sucks this bad, and they DON'T EVEN HAVE HDTV.

All the above from the Digitalspy forum [UK].

http://www.digitalspy.co.uk/index.php

Thanks again for directing me to that site, Bob.