Trying to build decent AM transmitter

[Jim Thompson]

On Sun, 07 Nov 2004 22:17:52 GMT, Joerg
<notthisjoergsch@removethispacbell.net> wrote:

Hi SioL,

Actually you need about 4-6Mbit/s for TV. Plus 1-2Mbit/s for Internet, usually.
I have it in my living room. I already had ADSL so upgrade to tv was logical and
cheaper step since my new apartment did not have cable.


Interesting. Where do you get the TV channels from? The fastest I have
seen were channels like Bloomberg at 250kbit/sec. Maybe a bit more
nowadays but not much.

Another negative aspect is that you can only watch one channel at a time (only
one
TV) or it would indeed take 12Mbit/s + whatever internet needs.


But watching more than one channel at a time usally fries a human brain
quite quickly, doesn't it. Unless you want to create a sports bar in
your basement.

Regards, Joerg

http://www.analogconsultants.com

It's rare that I and my wife are watching the same channel (in the
daytime)... I watch Fox News (actually just listening... the TV is
behind me when I'm at the computer), and the wife watches soaps and
game shows.

When the grand kids are visiting it is possible to have six different
channels on view. (Sets in kitchen, 3 bedrooms, great-room and my
office.)

So TV over twisted pair would be useless to us.

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

 

[Frithiof Andreas Jensen]

"Joerg" <notthisjoergsch@removethispacbell.net> wrote in message
news:7aaid.17333$6q2.16264@newssvr14.news.prodigy.com...

I think you may be right about that. But it will require the roll-out of
fibers into the homes for enough bandwidth. Then you have your HDTV
again, just in a different delivery mode.

Rumour has it that the 'vanilla' ADSL we have here in the DK can actually
run at 8 Mbit/s - the requirement presently being that one knows a techie
with the right access at the dominant telecoms provider. Who shall not be
named

The other rumour is that they want/need 12 Mbit/s om ADSL before they commit
to providing TV on it - in reality it is probably the 'Brownshirts' from
RIAA that are preventing any operator from enabling the downloading of DVD's
legally on players with storage, which would alleviate the BW problems
somewhat.

 

[Joerg]

Hi Ken,

You don't really need that much bandwidth if you assume some good
compression is used. Assuming we compress down to the information
contained in a network program we should be able to work out the average
number of bits needed. Then we can just divide by 3600 to get the data
rate. I'll make a start on the estimate for you:

There are a total of 4 basic plots which when combined with the various
subplots will take about 8 bits to transfer. So thats 1 byte per show.

ROFL! I have (or rather had to) sit through shows where the total amount
of useful information boiled down to about zero bytes.

Regards, Joerg

http://www.analogconsultants.com

 

[Joerg]

Hi Jim,

When the grand kids are visiting it is possible to have six different
channels on view. (Sets in kitchen, 3 bedrooms, great-room and my
office.)


We don't have kids, but if we did or if there are kids visiting there

won't be any TV. Whenever I get a glimpse of what is on cable at
neighbors I am glad we don't spend those $50 or so. Not worth it. Except
during what you call 'gimme week' at PBS but that also comes in terrestrial.

So TV over twisted pair would be useless to us.


There is a company (Key Eye Communications) out here that attempts to

run more than an order of magnitude faster over CAT-5 and CAT-6. Short
runs only, like a 150ft or so to the street box but that would allow all
your visitors to watch a different channel if they wanted to. I believe
their goal is 10Gbit/sec over copper. On the local level that could blow
fiber out of the water.

Regards, Joerg

http://www.analogconsultants.com