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Science Forum Index » Electronics - Equipment Forum » Digital TV
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Message |
| Tony Miklos |
Posted: Tue Apr 29, 2008 12:37 pm |
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Guest
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Not sure if I have the proper group, but I'll give this a shot.
I now use an outdoor antenna. Some channels come in perfect and some
not too great and some really bad. Will the DAC (digital to analog
converter) make poor signals come in better, worse, or the same?
When cell phones went digital it was said that calls will come in
clearer, but they will also give less warning when in an area with poor
reception, they basically go from good to dead.
Thanks,
Tony |
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| Eeyore |
Posted: Tue Apr 29, 2008 1:17 pm |
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Guest
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Tony Miklos wrote:
Quote: Not sure if I have the proper group, but I'll give this a shot.
I now use an outdoor antenna. Some channels come in perfect and some
not too great and some really bad. Will the DAC (digital to analog
converter) make poor signals come in better, worse, or the same?
The DAC itself isn't the issue, the issues are signal strength and receiver
performance.
Quote: When cell phones went digital it was said that calls will come in
clearer, but they will also give less warning when in an area with poor
reception, they basically go from good to dead.
This is inherent with digital media, they're mostly fine until they stop
working totally. Digital doesn't do gradual and graceful degradation.
Graham |
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| bg |
Posted: Tue Apr 29, 2008 2:13 pm |
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Guest
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Tony Miklos wrote in message <67p4n7F2pu0gcU1@mid.individual.net>...
Quote: Not sure if I have the proper group, but I'll give this a shot.
I now use an outdoor antenna. Some channels come in perfect and some
not too great and some really bad. Will the DAC (digital to analog
converter) make poor signals come in better, worse, or the same?
When cell phones went digital it was said that calls will come in
clearer, but they will also give less warning when in an area with poor
reception, they basically go from good to dead.
Thanks,
Tony
I just put in a Digital Stream brand converter box. Before switching I had a
good to excellent picture on just about all of my channels. One exception,
was that ch4 was ghosted out beyond all hope. With the converter box, ch4
comes in great. With the analog, a weak signal is still acceptable if you
don't mind the noise in the picture , but with the digital a weak signal
will cause pixelation and loss of audio. You either get a watchable picture
or you don't, there isn't a gradual degradation in picture quality like with
analog. I ended up tweaking the antenna a bit for a better compramise. One
thing I've noticed is that the audio seems to have a really bad volume shift
on all channels. It's like someone at the studio is constantly changing
levels. I don't know if this is due to the nature of the digital broadcast
or the converter box. |
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| Jamie |
Posted: Tue Apr 29, 2008 5:50 pm |
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Guest
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Tony Miklos wrote:
Quote: Not sure if I have the proper group, but I'll give this a shot.
I now use an outdoor antenna. Some channels come in perfect and some
not too great and some really bad. Will the DAC (digital to analog
converter) make poor signals come in better, worse, or the same?
When cell phones went digital it was said that calls will come in
clearer, but they will also give less warning when in an area with poor
reception, they basically go from good to dead.
Thanks,
Tony
Yup, and the same applied to DTV
depending on the receiver , side effects may vary.
image spotty in places etc..
--
http://webpages.charter.net/jamie_5" |
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| Tony Miklos |
Posted: Wed Apr 30, 2008 8:22 am |
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Eeyore wrote:
Quote:
Tony Miklos wrote:
Not sure if I have the proper group, but I'll give this a shot.
I now use an outdoor antenna. Some channels come in perfect and some
not too great and some really bad. Will the DAC (digital to analog
converter) make poor signals come in better, worse, or the same?
The DAC itself isn't the issue, the issues are signal strength and receiver
performance.
I got my old electronics a bit mixed up. I remember now on some old
(video game) monitors only the 1 IC was referred to as a "DAC". I wrote
the question as if you would call the entire converter box a "DAC".
Quote: When cell phones went digital it was said that calls will come in
clearer, but they will also give less warning when in an area with poor
reception, they basically go from good to dead.
This is inherent with digital media, they're mostly fine until they stop
working totally. Digital doesn't do gradual and graceful degradation.
Thanks. Now to find the best one on the market. I'll probably wait a
while.
Thanks,
Tony |
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| Tony Miklos |
Posted: Wed Apr 30, 2008 8:26 am |
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bg wrote:
Quote: Tony Miklos wrote in message <67p4n7F2pu0gcU1@mid.individual.net>...
Not sure if I have the proper group, but I'll give this a shot.
I now use an outdoor antenna. Some channels come in perfect and some
not too great and some really bad. Will the DAC (digital to analog
converter) make poor signals come in better, worse, or the same?
When cell phones went digital it was said that calls will come in
clearer, but they will also give less warning when in an area with poor
reception, they basically go from good to dead.
Thanks,
Tony
I just put in a Digital Stream brand converter box. Before switching I had a
good to excellent picture on just about all of my channels. One exception,
was that ch4 was ghosted out beyond all hope. With the converter box, ch4
comes in great. With the analog, a weak signal is still acceptable if you
don't mind the noise in the picture , but with the digital a weak signal
will cause pixelation and loss of audio. You either get a watchable picture
or you don't, there isn't a gradual degradation in picture quality like with
analog. I ended up tweaking the antenna a bit for a better compramise. One
thing I've noticed is that the audio seems to have a really bad volume shift
on all channels. It's like someone at the studio is constantly changing
levels. I don't know if this is due to the nature of the digital broadcast
or the converter box.
Thanks. I suppose soon there will be lots of tests and the different
brand boxes will get rated so we can pick the one best for our conditions.
Tony |
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| Tony Miklos |
Posted: Wed Apr 30, 2008 8:35 am |
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Jamie wrote:
Quote: Tony Miklos wrote:
Not sure if I have the proper group, but I'll give this a shot.
I now use an outdoor antenna. Some channels come in perfect and some
not too great and some really bad. Will the DAC (digital to analog
converter) make poor signals come in better, worse, or the same?
When cell phones went digital it was said that calls will come in
clearer, but they will also give less warning when in an area with
poor reception, they basically go from good to dead.
Thanks,
Tony
Yup, and the same applied to DTV
depending on the receiver , side effects may vary.
image spotty in places etc..
Thanks. There are already some possible tuner problems spotted.
"Microtune Claims Problems with Some DTV Converter Boxes
Tells NTIA Its Testing Found Inteference Issues with DTV-to-Analog
Converter Boxes"
http://www.broadcastingcable.com/article/CA6545291.html?rssid=193
Tony |
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| Jim Yanik |
Posted: Wed Apr 30, 2008 6:54 pm |
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Guest
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Tony Miklos <tonymiklos@planetc.com> wrote in
news:67ra4bF2q5oaiU1@mid.individual.net:
Quote: Eeyore wrote:
Tony Miklos wrote:
Not sure if I have the proper group, but I'll give this a shot.
I now use an outdoor antenna. Some channels come in perfect and
some not too great and some really bad. Will the DAC (digital to
analog converter) make poor signals come in better, worse, or the
same?
The DAC itself isn't the issue, the issues are signal strength and
receiver performance.
I got my old electronics a bit mixed up. I remember now on some old
(video game) monitors only the 1 IC was referred to as a "DAC". I
wrote the question as if you would call the entire converter box a
"DAC".
When cell phones went digital it was said that calls will come in
clearer, but they will also give less warning when in an area with
poor reception, they basically go from good to dead.
This is inherent with digital media, they're mostly fine until they
stop working totally. Digital doesn't do gradual and graceful
degradation.
Thanks. Now to find the best one on the market. I'll probably wait a
while.
Thanks,
Tony
your $40 coupons are only good for a limited time.
the DTV converter everybody is waiting for is the Echostar TR-40,due out in
June or July,last I heard.
--
Jim Yanik
jyanik
at
kua.net |
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| Tony Miklos |
Posted: Sat May 03, 2008 9:04 am |
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Guest
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Jim Yanik wrote:
Quote:
your $40 coupons are only good for a limited time.
I guess I'll wait to order mine.
Quote: the DTV converter everybody is waiting for is the Echostar TR-40,due out in
June or July,last I heard.
Is there some place these have been rated already? I'd like to see why
everyone is waiting for them. Any idea if it uses a Microtune brand tuner?
Tony |
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| Mark Zenier... |
Posted: Tue May 06, 2008 7:16 pm |
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Guest
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In article <6839nnF2qoefhU1 at (no spam) mid.individual.net>,
Tony Miklos <tonymiklos at (no spam) planetc.com> wrote:
Quote: Jim Yanik wrote:
your $40 coupons are only good for a limited time.
I guess I'll wait to order mine.
the DTV converter everybody is waiting for is the Echostar TR-40,due out in
June or July,last I heard.
Is there some place these have been rated already? I'd like to see why
everyone is waiting for them. Any idea if it uses a Microtune brand tuner?
<http://en.wikipedia.org/wiki/Comparison_of_CECB_units> is a comparison
table which indentifies the maufacturer of the guts of most units.
Mark Zenier mzenier at (no spam) eskimo.com
Googleproofaddress(account:mzenier provider:eskimo domain:com) |
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| Robert Baer... |
Posted: Wed May 07, 2008 10:36 pm |
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Guest
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Mark Zenier wrote:
Quote: In article <6839nnF2qoefhU1 at (no spam) mid.individual.net>,
Tony Miklos <tonymiklos at (no spam) planetc.com> wrote:
Jim Yanik wrote:
your $40 coupons are only good for a limited time.
I guess I'll wait to order mine.
the DTV converter everybody is waiting for is the Echostar TR-40,due out in
June or July,last I heard.
Is there some place these have been rated already? I'd like to see why
everyone is waiting for them. Any idea if it uses a Microtune brand tuner?
http://en.wikipedia.org/wiki/Comparison_of_CECB_units> is a comparison
table which indentifies the maufacturer of the guts of most units.
Mark Zenier mzenier at (no spam) eskimo.com
Googleproofaddress(account:mzenier provider:eskimo domain:com)
Anyone want a coupon? |
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