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Old February 6th 04, 04:20 AM
Tom Desmond
 
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Robert Casey wrote:

Make it interesting and get a digital TV set up. Amateur HDTV.


That would be cool...unfortunately, it would also be a price buster, as
I'm not aware of anything remotely inexpensive that would let you
transmit ATSC digital television in SD -- let alone in high definition.

Still, the nice thing is that it would take very little power since low
powered digital signals can travel pretty well.
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Old February 6th 04, 05:16 AM
Brenda Ann
 
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"Tom Desmond" wrote in message
...
Robert Casey wrote:

Make it interesting and get a digital TV set up. Amateur HDTV.


That would be cool...unfortunately, it would also be a price buster, as
I'm not aware of anything remotely inexpensive that would let you
transmit ATSC digital television in SD -- let alone in high definition.

Still, the nice thing is that it would take very little power since low
powered digital signals can travel pretty well.


Actually, they don't travel as well as an analog signal.. In areas where
there is at least a viewable (albeit snowy and/or ghosty) analog signal,
there is no receivable digital signal at all. This is practical experience
in Portland, Oregon, where the analog and digital signals are coming from
~2000' HAAT..


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Old February 7th 04, 05:32 AM
Tom Desmond
 
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Brenda Ann wrote:

Actually, they don't travel as well as an analog signal.. In areas where
there is at least a viewable (albeit snowy and/or ghosty) analog signal,
there is no receivable digital signal at all. This is practical experience
in Portland, Oregon, where the analog and digital signals are coming from
~2000' HAAT..


My experience here in Dallas is just the opposite -- very low powered
digital signals from a 1500' HAAT transmitter site come in perfectly at
my home 35 miles away, while analog signals at remotely similar power
levels are extremely snowy.
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Old February 7th 04, 05:47 AM
Brenda Ann
 
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"Tom Desmond" wrote in message
...
Brenda Ann wrote:

Actually, they don't travel as well as an analog signal.. In areas

where
there is at least a viewable (albeit snowy and/or ghosty) analog signal,
there is no receivable digital signal at all. This is practical

experience
in Portland, Oregon, where the analog and digital signals are coming

from
~2000' HAAT..


My experience here in Dallas is just the opposite -- very low powered
digital signals from a 1500' HAAT transmitter site come in perfectly at
my home 35 miles away, while analog signals at remotely similar power
levels are extremely snowy.


Tom,

The problem is, with digital, it's either there or it's not. There is no
fringe area. In Oregon, and other mountainous states, it's much different
than Texas, Oklahoma or Kansas, where it's mostly flat. Even within the city
of Portland, there are large numbers of places that are not line-of-sight,
even from antennas at 2000' HAAT.. and the digital signals are not there at
all in the shadows of any of the hills, nor are they available out on the
coast, whereas analog signals, although relatively poor, are..



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Old February 6th 04, 09:08 PM
Robert Casey
 
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Tom Desmond wrote:

Robert Casey wrote:



Make it interesting and get a digital TV set up. Amateur HDTV.



That would be cool...unfortunately, it would also be a price buster, as
I'm not aware of anything remotely inexpensive that would let you
transmit ATSC digital television in SD -- let alone in high definition.

Still, the nice thing is that it would take very little power since low
powered digital signals can travel pretty well.


In the trade mag _TV Technology_ page 29 Dr Kraus has a few DTV
transmitters for ham
radio operators. Email is krausue at uni-wuppertal dot de hoping to
avoid spambots
Use them in the 70cm and 23 cm bands. Don't know what price, though.



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