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#1
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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. |
#2
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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.. |
#3
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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. |
#4
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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.. |
#5
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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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