I will say this about the current service; it seems to work okay...I think. In the bedroom with the modem, the coax splits before the modem and one leg runs to the modem, the other to a TV. We do not have a cable box or DVR on this TV, so the highest channel we get is something like 74. I have noticed that on this TV some of the higher channels (i.e. Disney and TCM) have reception that is not as good as the rest of the channels. Any suggestions on this?
Could be anything. It could be the source material or the digital to analog conversion at the headend. It also could be a problem with the coax wire from the demarc box to its termination point in that room. If your coax terminates in a wall box, take of the cover and check to see if the cable is kinked inside the wall box. You also can be getting ingress in the splitter in the room and it is effecting the frequencies of those channels.
A simple thing you can do is go to Lowes or Home Depot and get some barrels (connects two male F connectors together http://www.hometech.com/hts/products...gc-aff2ff.html
) and a 50 foot or 100 foot RG6 coax cable with two male F connectors on it. Remove the drop from the splitter in your demarc box and connect your patch cable to the drop with a barrel and run it in a window right to the tv in question. If you seen an improvement then you know the problem is with your wiring and if you don't see any improvement the there maybe a problem with the cable company wiring or the source material that they are sending you.
Also, and I don't know if this is a signal issue or a DVR issue, we have only one TV in our home with a cable box (it is a DVR...a SA 8300HD). We have had to return at least one of these in the past because it did not seem to be working correctly. THe thing that drives me nuts with this DVR (and it may be all DVRs for all I know), when I start surfing the thing can't keep up. Let's say I start out surfing from channel 274 and surf up to 290, once i get to 290 there is a delay in the display showing 290(289 may be on the screen while the info bar says 290...then 290 will appear). Any ideas on this? Thanks for all the help.
First try the same technic with the barrel and the patch cable and see if you have any improvement.
The thing with the channels numbers you see on a cable box is that they are virtual. It is a number that the cable company assigns to that channel but you don't know what the actual RF channel that those virtual channels are assigned to.
For example, channel 289 could actually be physical RF channel 80 and channel 290 can be physical RF channel 115. So if you are having signal issues with the high frequency channels they may be harder to tune in.
Here is the procedure to get to the diagnostics window for your cable box:Diagnostics
Diagnostic Mode. There are two ways to enter Diagnostic Mode:
1: Press and hold Select on front of unit until Mail light starts to flash, then press INFO.
2: Press and hold Pause on remote until Mail light starts to flash (around 10-15 seconds), then press Page Up (-). On some remotes, Page (+) might need to be used instead.
Disappearing Diagnostic Window. Enter Diagnostic Mode (see above item). Change transparency of screens by pressing Select on front of box or "B" on remote. It goes from 100% opaque to about 50% opaque to about 5% opaque. You can then use Page Up/Down on remote to cycle through screens. This is useful when changing channels, noting signal levels/PQ, or trying to see levels fluctuate as glitches occur.
Tune the box to channel 289 and then enter the diagnostics screen. Right under the column Current QAM you will see the frequency of that channel. Look it up on one of these charts to see the actual physical RF channel it is. Repeat for channel 290.http://en.wikipedia.org/wiki/North_A...on_frequencieshttp://www.mastervideo.com/ntsc_chart.htm
Here is a link to a thread on AVS for the SA 8300HD:http://www.avsforum.com/avs-vb/showthread.php?t=471859
Here is a link to a thread that is about four years old. This guy has TWC and has the same situation that you do.http://www.satelliteguys.us/time-war...l-quality.html
I'll give this a shot. Thanks! I think I'm going to still have TWC come out though. I figure I'm going to spend between $10 and $20 on a good 4-way splitter. TWC will charge me $42 and I won't have to worry about not getting something right. Besides, I want to point out some of the issues(especially grounding to the 3-way splitter already in the box) that jkxmlr raised in an earlier post to see what they say.
This is a good idea. Since you have a basement, the coax runs, amplifier (if needed), and splitters should be moved to a central loacation in your basement and not in the demarc box. I can't understand why it wasn't done this way in the first place.
I figure since all your runs go to the demarc box that there was once a six way splitter there which might be another explanation for the cable amp. Then sometime later it was removed and a three way splitter was put in. Another explanation is that the coax run that is hooked to the amp has some kind of signal issue with it.
Even if they charge you a hundred dollars or so to fix it right, the peice of mind it gives you will be worth it.
Here is a good website on how to do structured wiring yourself:http://www.swhowto.com/index.htm
I put all the structured wiring in my home by myself. It cost me almost 3000 dollars and I bought everything from this place. They sell top notch products.http://www.hometech.com/