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This can cause the satellite signals to bounce off at different angles than they otherwise would and not be received by the LNB as they should be which can cause poor satellite reception. So, if your dish has been hit by a ball or received any form of damage and still looks as if it is in the correct position there is a chance that you have a broken satellite dish. If you live in a seaside or coastal town you could consider isntalling a satellite dish that is better suited for the environment, like a fibreglass satellite dish.
Cables overtime can generate faults. When doing this every few tiles a piece of lashing wire should be inserted in and around the cable and under a tile to stop the cables flapping about.
Another common problem with cables installed outside is that over time the cables will begin the perish. Internal cables can still become faulty as well. This could be physical damage like where a rodent has chewed through it or an electrical type fault where a the cable has carried too large of a current that it is intended to, like an electrical surge or nearby lightning strike.
There is also the possibility that an incorrect cable has been used to connect your satellite dish to your satellite receiver. I would suggest at an absolute minimum that you should use a double screened coaxial cable with a solid centre conductor. As satellite signal are beamed down to earth from satellites in space, atmospherics and weather conditions can affect your satellite TV reception, particularly heavy rain and cloud cover and electrical storms.
This is because the radio waves must travel through all of this and with water rain being an electrical conductor and electrical storms themselves being well, electrical. This can cause all sorts of havoc with your signals. The good news is that this should only happen ever so often so when the rain goes, or the storms eases the signal should come back. You could of course have a connection that is not properly weatherproofed in which case you would need to fix this.
It is possible that the signal is just too weak, if this is happening for any other reason than the cable length is too long I would suggest that something else is causing your signal to be weak that has already been mentioned in the sections above.
If you have a cable length of more than 50m normally fine for WF type cable you may benefit from installing a larger cable size or taking a shorter cable route to your TV. So, if you have a smaller type shotgun cable running a long length you may benefit by replacing the cable for a WF type cable and like wise for a WF coaxial cable that is losing a lot of signal because of a long cable length, you many benefit by installing a WF cable. I would suggest though however for domestic installations rather than installing cable sizes you will be better off installing line amplifiers instead.
This is because satellite dishes and wall plates are not designed to receive a cable size above this. When installing line amplifiers to improve your satellite signal placement of the line amplifiers is very important.
The amplifier should be installed not too near the satellite dish so that it overloads the line amplifier and not too far away so that the signal is already completely lost before it is amplified. Usually around halfway is a good spot to install the line amplifier. Believe it or not this is a thing! I always get looked at strange when I tell my clients that their signal is too strong.
This can be rectified often with a signal attenuator that will pass DC and the frequencies that satellite TV uses but I would suggest that you would be better off contacting whomever is responsible for the up keep of your communal TV system.
You must remember that these boxes although are very sophisticated in what they do only have a few in built messages in the software, so any problem could leave you with a no signal message, despite that not being the problem.
If you have a spare satellite receiver to hand it might be worth disconnecting your existing satellite receiver and trying the spare one. You should also bear in mind that if you are receiving encrypted TV services like Sky that you will not be able to receive these without a compatible box and viewing card.
This will only affect the encrypted TV services however, like Sky 1, Sky Sports etc but could still be used for the free unencrypted services like BBC, ITV and to see whether your satellite dish is working. I have deliberately left this at the end of the blog as it is perhaps the most unlikely. Outside electrical interference can affect your satellite TV reception, but this is only usually happens under fault conditions and should be reported to whomever is responsible for investigating this type of thing in your area.
There are also some mobile phone and cell phone operators that use frequencies with the satellite Intermediate frequency band IF. Because of the way that satellite dishes receive their signals these are very, very unlikely but still a possibility.
In the majority of cases, pixelating pictures "blocks on the screen" or a "No Signal" message from time to time are symptoms of reception issues. There is essential maintenance carried out on the network from time to time, which may have a temporary impact on signal levels. However these are usually scheduled between midnight and 6am to avoid causing disruptions to your viewing and you can find information about all projects that may affect the network status here information as provided by the Transmission Providers.
Our recommendation is to contact a local installer in your area who can provide on-site diagnosis and fix. Here's a free online directory where you can find a local installer. It's best to ring around for a few quotes. Alternatively you can contact Aerials Direct , a Freeview accredited installer, for a quote.
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