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Thread: Rain*X on your dish and LNB ?

  1. #37
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    Quote Originally Posted by PSB
    Of course NONE of you have actually purchased, used or seen RAIN SHIELD
    ONLY listen to people who actually have it in their hand and are using it


    I would have agreed 110% until I actually seen it work.

    Rain fade is caused by a few things, if you can eliminate one part of the equation it really does cut down considerably with the problem.



    Ku signals are usually weaker than DBS signals, and I very very rarly get any kind of problems where as people I know with DBS call me during the heavy rain saying they have lost signal.

    This stuff is wonderful!

    Just put another application on my 36" dish for rainy season.
    I think the 36" dish has more to do with it than anything. The DBS'ers you know probably are using an 18" to your 36".
    Spray some on your friends 18" dish and see what happens. As many have stated rainfade usually happens before a drop hits the dish.

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  3. #38
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    No disrespect but,

    It's snake oil, falsehoods, unless that stuff can dissapate storm cells located up in the sky, it doesn't work, the ones who think it worked, are suffering from the placebo effect, they might see a 5% reduction in attenuation if its torrential rain, not near enough to prevent rain fade, remember the product claims to SOLVE rainfade, I'm sorry, but no way.

    Here is some site which describe what rain fade is and how it is caused, not one single part of any of these sites [1] even remotly states that rain on the surface of the dish has anything to do whatsoever with rain fade, with the exception of the sites which SELL product that purports to have a product that does [2], I don't blame them, gotta make money, but the fact is, it's fake, and I will never concede this stuff would have any noticable effect on rain fade whatsoever.

    [1] Links supporting the fact that rainfade is caused by conditions in the atmosphere, not the dish itself:


    http://www.solidsignal.com/satellite...fade_about.asp





    http://www.thefixchicks.com/2005/11/...ite-rain-fade/





    http://www.telesat.ca/satellites/tra...ttenuation.htm





    http://www.skycasters.com/satellite-...liability.html





    http://www.dbsinstall.com/Help/signalloss-1.htm




    Even NASA, which uses ACTS adaptive rain-fade compensation protocol to prevent rain fade, if this product SOLVED rainfade, NASA would just by a few gallons of this stuff rather than implementing ACTS, to be fair it DOES point out some effect of a wet dish over a dry dish, but that reduction was ~5% (certainly not enough to _solve_ rainfade), even so, one would not need to shell out 25 bucks to keep your dish dry (and the 5% reduction in attenuation would not be near enough to stop rainfade), if anything it might give you maybe 1 second or 2 of signal (I'm being generous here) before the REAL effect of rainfade make the signal fall below your receivers ability to lock onto the signal:


    http://www.grc.nasa.gov/WWW/RT1999/6000/6100acosta.html




    [2] Sites which state that water on the dish face can cause rainfade (coincedently, they all sell products for it):

    http://www.sadoun.com/Sat/Products/k...e-Solution.htm





    http://www.wx2100.com/faqs.asp




    I know there are more links disproving this snake oil, but I simply could not find anyone else who would claim that spraying something on your dish SOLVES (that is what it says in the ads) rain fade.















    Last edited by damaged; 07-06-2006 at 01:29 PM.

  4. #39
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    This is the key paragraph from NASA link
    http://www.grc.nasa.gov/WWW/RT1999/6000/6100acosta.html


    with my underline remark :
    "Wet Antenna Experiment
    Selecting a subtropical rain zone (Cocoa, Florida) and using a tipping bucket rain gauge to collect rainfall data over a 10-month period, Glenn’s researchers conducted the Wet Antenna Experiment to analyze the contribution that a wet feed and wet reflector antenna have on the signal path losses at Ka-band frequencies. The receiving signal strength was measured, and a small weather station was operated next to the T1VSAT terminals. The results indicated that feed wetness was the main contributor to system losses, with reflector wetness having less effect. The reflector losses were a result of scattering due to raindrop size at the reflector surface, which distorted the surface and reduced antenna gain significantly. Another observation showed that the cumulative fade distribution with a wet antenna was 3 to 5 dB worse than with a dry antenna."


  5. #40
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    Quote Originally Posted by damaged
    No disrespect but,

    It's snake oil, falsehoods, unless that stuff can dissapate storm cells located up in the sky, it doesn't work, the ones who think it worked, are suffering from the placebo effect, they might see a 5% reduction in attenuation if its torrential rain, not near enough to prevent rain fade, remember the product claims to SOLVE rainfade, I'm sorry, but no way.

    Here is some site which describe what rain fade is and how it is caused, not one single part of any of these sites [1] even remotly states that rain on the surface of the dish has anything to do whatsoever with rain fade, with the exception of the sites which SELL product that purports to have a product that does [2], I don't blame them, gotta make money, but the fact is, it's fake, and I will never concede this stuff would have any noticable effect on rain fade whatsoever.

    [1] Links supporting the fact that rainfade is caused by conditions in the atmosphere, not the dish itself:


    http://www.solidsignal.com/satellite...fade_about.asp





    http://www.thefixchicks.com/2005/11/...ite-rain-fade/





    http://www.telesat.ca/satellites/tra...ttenuation.htm





    http://www.skycasters.com/satellite-...liability.html





    http://www.dbsinstall.com/Help/signalloss-1.htm




    Even NASA, which uses ACTS adaptive rain-fade compensation protocol to prevent rain fade, if this product SOLVED rainfade, NASA would just by a few gallons of this stuff rather than implementing ACTS, to be fair it DOES point out some effect of a wet dish over a dry dish, but that reduction was ~5% (certainly not enough to _solve_ rainfade), even so, one would not need to shell out 25 bucks to keep your dish dry (and the 5% reduction in attenuation would not be near enough to stop rainfade), if anything it might give you maybe 1 second or 2 of signal (I'm being generous here) before the REAL effect of rainfade make the signal fall below your receivers ability to lock onto the signal:


    http://www.grc.nasa.gov/WWW/RT1999/6000/6100acosta.html




    [2] Sites which state that water on the dish face can cause rainfade (coincedently, they all sell products for it):

    http://www.sadoun.com/Sat/Products/k...e-Solution.htm





    http://www.wx2100.com/faqs.asp




    I know there are more links disproving this snake oil, but I simply could not find anyone else who would claim that spraying something on your dish SOLVES (that is what it says in the ads) rain fade.
    So you have NEVER seen it, or used it this is just your opinion.

    Sadoun is a GREAT GOLD sponsor here at SatelliteGuys.US they do not sell snake oil, I would retract that comment if I were you.
















  6. #41
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    I for one experience rainfade before a drop ever hits the dish, so if this product fixes that it would be a miracle. Does it make the dish grow bigger ?
    It looks like it works great for snow though.

  7. #42
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    Quote Originally Posted by dslate69
    I for one experience rainfade before a drop ever hits the dish, so if this product fixes that it would be a miracle. Does it make the dish grow bigger ?
    It looks like it works great for snow though.
    WOW! That's cloud fade not rain fade, maybe your dish and/or LNBF need realigned, NEVER seen that phenomenon ever.

    I also spray RAIN SHIELD on the LNBF cover to keep droplets of water from gathering there

    It is good for snow (But alas there seems to be about 300 different types of snow) I know that the State lottery use it on their satellite dish for snow!
    Last edited by PSB; 07-06-2006 at 07:19 PM.

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