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digital channel signal strength too low

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Old 02-11-2007, 09:26 PM   #1
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Default digital channel signal strength too low

do you need a cable provider box set top in order to receive digital channels ? for example i sometimes get digital channels like 75.1, 75.2 and etc on my sharp lcd tv with a build it tuner... sometimes i recieved them good but other times the signal is too low.. what can be the cause of this ? do you guys think if i buy a motorala signal booster it will help out ?
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Old 02-12-2007, 05:48 AM   #2
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JMO: get a stb from your provider and open the whole world of HD to your viewing instead of trying signal boosters, etc.

e
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Old 02-13-2007, 09:12 AM   #3
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Jammer~
The problem may not be the quantity of signal as much as the quality of the signal. If you boost a strong quantity with poor quality, you have more strength with the same lack of quality.

First thing I would recommend is to see if somebody from your cable company can come out and check the MER and BER of your QAM signals with an analyzer to see if there are any errors in the QAM.

Boosting is a bandaid and doesn't always correct the problem and should be used only when signal levels are below operating specs. I've seen no problems at a -14 dB and I've seen problems at +4 dB. If you have a hole in a garden hose, and to compensate you increase the water pressure, you still have a leak that is causing loss of water. Compensating by forcing more water through the hose only masks the problem. Fixing the leak is the key...now apply that to cable, if you have a problem with the QAM signal, amplifying it only increases the signal strength but doesn't fix the errors in the data being received. Does that make sense?
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Old 02-14-2007, 09:39 PM   #4
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Quote:
Originally Posted by theCableGuy
Jammer~
The problem may not be the quantity of signal as much as the quality of the signal. If you boost a strong quantity with poor quality, you have more strength with the same lack of quality.

First thing I would recommend is to see if somebody from your cable company can come out and check the MER and BER of your QAM signals with an analyzer to see if there are any errors in the QAM.

Boosting is a bandaid and doesn't always correct the problem and should be used only when signal levels are below operating specs. I've seen no problems at a -14 dB and I've seen problems at +4 dB. If you have a hole in a garden hose, and to compensate you increase the water pressure, you still have a leak that is causing loss of water. Compensating by forcing more water through the hose only masks the problem. Fixing the leak is the key...now apply that to cable, if you have a problem with the QAM signal, amplifying it only increases the signal strength but doesn't fix the errors in the data being received. Does that make sense?

Good point............

TheCableGuy are you a technician ?????

& for what company ?
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Old 02-15-2007, 11:04 AM   #5
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Quote:
Originally Posted by dabig25
Good point............

TheCableGuy are you a technician ?????

& for what company ?
Doesn't my name say it all???

Yes I am a tech, TWC somewhere on planet earth
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Old 02-18-2007, 12:12 PM   #6
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Okay ........

I was a Service Tech for TCI, AT&T Broadband & Comcast for 10 years.

I just left to go work for AT&T telephone part.
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Old 02-19-2007, 05:27 AM   #7
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Quote:
Originally Posted by dabig25
Okay ........

I was a Service Tech for TCI, AT&T Broadband & Comcast for 10 years.

I just left to go work for AT&T telephone part.

Oh....so you've crossed over to the dark side of the force?
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Old 02-20-2007, 02:50 AM   #8
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Quote:
Originally Posted by theCableGuy
Oh....so you've crossed over to the dark side of the force?
Me don't suppose that either of you lads would reside in east tennessee to share some knowledge with our comcast service. Be it good force or bad force,,,any force would be better than a farce.
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Old 02-20-2007, 08:00 AM   #9
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Quote:
Originally Posted by oblioman
Me don't suppose that either of you lads would reside in east tennessee to share some knowledge with our comcast service. Be it good force or bad force,,,any force would be better than a farce.
Since I work for TWC, I don't think I can offer much assistance concerning Comcast...It all depends on the question I suppose, after all cable is cable.
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Old 02-21-2007, 07:23 PM   #10
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Quote:
Originally Posted by theCableGuy
Oh....so you've crossed over to the dark side of the force?

I'll just say that..........
A*&T is taking much better care of me than com*st ever did.
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