why does this happen?

[artsapart]

I have had satelite tv now for about a year as I am unable to recieve an analouge signal and i am hoping to find someone who can explain what exactly is happening with my service......mostly it is fine but from time to time and this is normally if it is raining heavily of if it is windy and my neighbours trees are blowing around the image starts to pixilate and then no satalite signal is received.....are these things really that delicate that they can be effected by this?

[bw41101]

The problem you describe is very common amongst the satellite fraternity. This loss of signal is commonly referred to as “rain fade” or signal attenuation and is where rain drops (due to the very high frequencies involved) actually "absorb or indeed reflect" some of the signal. It's only a very small amount (per raindrop), but the effect is cumulative due to the thousands of raindrops falling in the path between your dish and the satellite.

In addition, the leaves of trees can have a signal scattering effect which can cause the effects you describe.

Hope this answers your question..?

Cheers and Si thee.

[DVD Cinema]

This is one of the reasons I have Cable.

It can happen on DTT Freeview as well.

Mind you, some of the Cable signals are via Satellite.

[spiderplant]

Originally Posted by DVD Cinema

Mind you, some of the Cable signals are via Satellite.

But picked up with 3 metre dishes. I can't remember them ever being affected by the weather.

[artsapart]

Originally Posted by bw41101

The problem you describe is very common amongst the satellite fraternity. This loss of signal is commonly referred to as “rain fade� or signal attenuation and is where rain drops (due to the very high frequencies involved) actually "absorb or indeed reflect" some of the signal. It's only a very small amount (per raindrop), but the effect is cumulative due to the thousands of raindrops falling in the path between your dish and the satellite.

In addition, the leaves of trees can have a signal scattering effect which can cause the effects you describe.

Hope this answers your question..?

Cheers and Si thee.

Thank you very much for confirming this for me and your very interesting answer. I think my major problem must be the leaves on the trees

[MikeyB]

Have to say only ever had this problem once with my Sky installation, and that was caused by snow building up on the dish, cleard it off with a broom!!!

There are lots of trees around, and directly in front of the dish within metres of it, and I never get any affect even in the heaviest of rain.

[artsapart]

Hmmmm know you have got me wondering again as I don't see why my trees would and yours wouldn't!!! I am now wondering if it might have anything to do with the crappie installation of the system. whilst cleaning out my gutter I have discovered that the coax cable for my connection runs down my guttering and there is a big lump of installation tape covering a join. I know installation tape is great stuff but i think expecting it to stand up to constant water abuse in my gutter is a bit much.....would this make my signal pixalate or just give no signal at all?QUOTE=MikeyB;34429604]Have to say only ever had this problem once with my Sky installation, and that was caused by snow building up on the dish, cleard it off with a broom!!!

There are lots of trees around, and directly in front of the dish within metres of it, and I never get any affect even in the heaviest of rain.[/QUOTE]

[JG3870]

Trees and leaves are a big problem and because the satellite is so low in the sky if the dish is in line with the tree you will have problems and if the dish is above the tree you shouldn't get any problems, I had freesat installed earlier in the spring and the dish was fairly low down on the building and there was a tree nearby.
I had no problems until it started raining when I lost my picture completely which was caused by the mist which rises off the tree when it rains, after a few weeks the tree sprouted big leaves which blanked out my signal completely and I had to get another installer in to move the dish well away from the tree and haven't had a problem since.

[artsapart]

Originally Posted by JG3870

Trees and leaves are a big problem and because the satellite is so low in the sky if the dish is in line with the tree you will have problems and if the dish is above the tree you shouldn't get any problems, I had freesat installed earlier in the spring and the dish was fairly low down on the building and there was a tree nearby.
I had no problems until it started raining when I lost my picture completely which was caused by the mist which rises off the tree when it rains, after a few weeks the tree sprouted big leaves which blanked out my signal completely and I had to get another installer in to move the dish well away from the tree and haven't had a problem since.

unfortunatly I cant do anything about my tree situation as they dont belong to me and apparently the signal was pritty hard to find so moving my dish isnt an option either I know its no consalation but it helps to know that I am not alone ....oh by the way can anyone tell me how to edit a post after it has been posted please???

[bw41101]

Originally Posted by artsapart

unfortunately I cant do anything about my tree situation as they dont belong to me and apparently the signal was pretty hard to find so moving my dish isnt an option either I know its no consolation but it helps to know that I am not alone ....oh by the way can anyone tell me how to edit a post after it has been posted please???

Once you've submitted a post, you can only modify it so long as no one else continues the thread or (if no-one does) a short period of time afterwards. So if one bashes the keyboard without engaging brain and realises afterwards that one has coqued up, then unfortunately (like a tattoo) it's permanent.

Note, there's also a time limit on awarding reputation points as well.

Si thee.

[Mal]

Originally Posted by bw41101

Once you've submitted a post, you can only modify it so long as no one else continues the thread or (if no-one does) a short period of time afterwards. So if one bashes the keyboard without engaging brain and realises afterwards that one has coqued up, then unfortunately (like a tattoo) it's permanent.

Should the word in bold not be spelt with "ck" in the middle?

Originally Posted by bw41101

Note, there's also a time limit on awarding reputation points as well.

Si thee.

Are you hinting for a red blob? Especially after pulling up someone for their spelling...

[bw41101]

Originally Posted by Mal

Should the word in bold not be spelt with "ck" in the middle?

Behave yer sen!

[dragon]

Originally Posted by artsapart

Hmmmm know you have got me wondering again as I don't see why my trees would and yours wouldn't!!! I am now wondering if it might have anything to do with the crappie installation of the system. whilst cleaning out my gutter I have discovered that the coax cable for my connection runs down my guttering and there is a big lump of installation tape covering a join. I know installation tape is great stuff but i think expecting it to stand up to constant water abuse in my gutter is a bit much.....would this make my signal pixalate or just give no signal at all?QUOTE=MikeyB;34429604]Have to say only ever had this problem once with my Sky installation, and that was caused by snow building up on the dish, cleard it off with a broom!!!

There are lots of trees around, and directly in front of the dish within metres of it, and I never get any affect even in the heaviest of rain.

[/QUOTE]

That joint probably isn't helping matters.

[alnero02]

Rerun the cable, joins usually invite water in over time and water plus electric current leads to electrolysis on the metal inside as well as affecting signal delivery, then get the installer back and give him a good hard slap!!