MadMANN
Premium
join:2005-08-19
 ·Comcast
| reply to CableConvert
Re: [Cable] Could FM Towers be the Problem?
If you are that close to the towers, it could definitely be an issue if the cable isn't shielded correctly and/or the connectors are not installed properly.
Don't forget, those towers are transmitting those FM frequencies, but are also radiating any other frequency in the air. It's basically a big antenna.
I guess my questions are:
1. What is the shielding on your current wiring?
2. Are you sure the connectors are all nice and tight, installed correctly. |
|
CableConvert
Premium
join:2003-12-05
Atlanta, GA
| I have checked every connection and even had the tech replace all the splitters. I do not see anything touching the main wire on the connectors. The cable is RG-6U. I checked in the attic and it was running close to the main electrical feed to the breaker box (about 3 feet from it) if that has anything to do with it |
|
MadMANN
Premium
join:2005-08-19
·Comcast
| said by CableConvert  :I have checked every connection and even had the tech replace all the splitters. I do not see anything touching the main wire on the connectors. The cable is RG-6U. Ok, you say that you don't see anything touching in the connectors, but are the connectors installed properly and are they decent quality? In other words, is there any of the siver braiding coming out of the back of the connectors at all? Are any of them the slightest bit loose? Believe it or not, those are big factors when it comes in ingress.
Also, there are many types of RG6. Some good, some not so good. I have seen plenty of RG6 that is not shielded well. In fact, I would use a 40' piece of dual shielded aluminum RG59 before I would use a piece of RG6 with nothing but a thin piece of foil around the dielectric.
Last, a splice wouldn't create ingress unless the connectors are not properly installed or the barrel is not shielded properly.
Anyway, with your location and obvious RF-rich environment, there really is no room for error when it comes to your in-house and exterior cable system. |
|
CableConvert
Premium
join:2003-12-05
Atlanta, GA
| They all seem to be installed properly. They are tight and none of the shielding is visible. The cable has a thin shield of aluminium then a braided layer on top of that. It certainly wont hurt for me to examine each one more closely. I am interested in why the question about what channels come in with no connection at all...because some of them seem to close to the problem channels |
|
MadMANN
Premium
join:2005-08-19
·Comcast
| Ah. Sounds like dual shield cable.
Yeah, a lot of the frequencies that you are having problems with are also in the same spectrum as a lot of OTAs. And the fact that you are receiving some of these without anything connected to the set tells me that these are very strong and could definitely cause a problem where dual shielded cable isn't enough.
My suggestion would be to subscribe to your cable company's guardian plan first so that you don't have to pay through the nose for the service cll. Then have them come back. The repair tech should be able to measure ingress and find out which outlet(s) it is coming from. From there, they can repair service and replace any connectors, cables, or splitters that may be causing the trouble. Now, if your house is pre-wired with cables running through the walls , you may need an electrician depending on your provider's policy regarding wall-fishing.
Good luck. |
|
MacLeech
The one and only
Premium,MVM
join:2001-07-14
SoCal
| reply to CableConvert
said by CableConvert :I am interested in why the question about what channels come in with no connection at all...because some of them seem to close to the problem channels With nothing connected to the TV, the shielding within the TV should be enough to block any outside signal from reaching the tuner.
Something in the TV is acting as an antenna or the shielding for the tuner is poor enough for direct pickup to occur across a wide range of channels.
This would interfere with anything being provided to you by the cable company on those same analog channels. |
|
CableConvert
Premium
join:2003-12-05
Atlanta, GA | so it could be the TV? Its a small little tv in the kitchen that I tested on...guess I'll disconnect it and see what happens |
|
egnlsn
Premium
join:2003-09-26
Salt Lake City, UT
 ·Digis
 ·Vonage
| said by CableConvert :so it could be the TV? I've seen it more than once -- especially on smaller (13") sets. Poorly shielded tuners. Have also seen 26" sets (cable compatible) with no coax connector.
--
CIAO! |
|
