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Long duration rain fade


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19 replies to this topic

#1 OFFLINE   Weather88

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Posted 20 June 2013 - 10:46 PM

So I had my D* installed back in October, and I've noticed that we seem to be having a problem losing our service during storms, usually right before the storm gets here, during the storm, and a few minutes after, and then it comes back up. I found this template on this site, and I was hoping you all could tell me how my signals look. Any insight would be greatly appreciated!! 
 
My setup is 1 HR34 and 3 H25's with a Slimline 5 dish and SWM. It's a completely calm and clear night outside with not a cloud in the sky, so I figured it would be perfect to get the best signal readings. Also, I live just south of Albany, NY.
 
 
Satellite transponders (32 total at 101º)
[Most of your standard definition channels are beamed from 101ºW]
1-8    96 96 95 97 95 100 96 100
9-16   96 97 96 97 96 100 97 100
17-24  96 100 96 95 97 100 97 100
25-32 96 100 96 72 98 100 96 100
 
Satellite transponders (3 total at 110º)
[Not present with Slimline3 dish. No channels are currently beamed from this satellite]
1-8    NA  NA  NA  NA  NA  NA  NA  95
9-16   NA  96   NA  97   NA  NA  NA  NA
 
Satellite transponders (11 total at 119º)
[Not present with Slimline 3 dish. Local SD channels for some cities, Spanish package]
17-24  NA  NA  NA  NA  NA  96   100  96
25-32  98  98   100   97   96   97  100  97
 
Satellite transponders (16 total at 99º(s)) [or 99º(b)]
[Local HD channels for some cities]
1-8    69   0   69   0  0  0   NA  NA
9-16   NA  NA  NA  NA  NA  NA  70   91
17-24  82 87 92 95 95 91 68 63
[Note: these can be very slow to appear]
 
Satellite transponders (14 total at 99º©) [or 99º(a)]
[National HD channels]
1-8   86 80 83 80 87 80 83 80
9-16  88 83 85 80 91 85  NA  NA
[Note, these can be very slow to appear]
 
Satellite transponders (16 total at 103º(s)) [or 103º(a)]
[Local HD channels for some cities]
1-8    96   95   0  93   NA   NA   NA  NA
9-16   NA  NA  NA  NA  NA  NA  95  72
17-24  97   94   91   77   89   79   91   76
[Note, these can be very slow to appear]
 
Satellite transponders (16 total at 103º(ca))
[National HD channels beamed from D12 satellite]
1-8    NA  NA  NA  NA  NA  NA  NA  NA
9-16   95   77   91   79   91   80   86   80
17-24  90   82  88   79   90   82   88   82
 
Satellite transponders (14 total at 103º(cb)) [or 103º(b)]
[National HD channels beamed from D10 satellite]
1-8    93   80   87   78   89   81   87   80
9-16   89   82   88   80   89   81   NA  NA
17-24  NA  NA  NA  NA  NA  NA  NA  NA
 
Satellite transponders (9 total at SWM)
[You'll only see this if you have a Single Wire Multiswitch (SWM) dish]
1-8    100   0   0   0  100   100   100   100
9-16   x   NA  NA  NA  NA  NA  NA  NA

Edited by Weather88, 20 June 2013 - 10:47 PM.


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#2 OFFLINE   litzdog911

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Posted 21 June 2013 - 12:26 AM

Those signal readings are pretty good.  Check them again the next time you have "rain fade" and post them back here.  Your problem might actually be related to moisture getting inside a coax cable connector, or perhaps a defective dish LNB.  


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#3 OFFLINE   texasbrit

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Posted 21 June 2013 - 06:22 AM

I would disagree with litzdog (sorry!). You have several signals on 99c, 103ca and 103cb down in the 70s or low 80s, and those are way below DirecTv's install verification (quality control) levels. All the signals on 99c, 103ca and 103cb should be in the high 80s at least, preferably low to mid 90s. A dish realignment should get your signals into this range. This should give you a chance of reducing the outage time due to weather.



#4 OFFLINE   peds48

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Posted 21 June 2013 - 06:45 AM

I dont think is a dish alignment but rather a bad LNB. there are several TP on the high 90s on the 103 and 99 sats, A dish alignment would affect all transponders on those satellites as well
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#5 OFFLINE   harsh

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Posted 21 June 2013 - 09:32 AM

The alternating high and low signals on 99 and 103 suggest to me that it is an alignment issue.

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#6 OFFLINE   jimmie57

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Posted 21 June 2013 - 09:55 AM

Since both the 99 and 103 are very similar in readings wouldn't this suggest a very slight elevation adjustment to increase the readings ?


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#7 OFFLINE   sstv

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Posted 21 June 2013 - 01:44 PM

Hi All

I had a simillar problem. All my sat readings were very good but any kind of rain would knock out my viewing.  The dish had been realigned because of a new LNB and was on the money. I noticed that the tech had split and spliced the coax near the dish so he could get his meter in line so I got my ladder to take a look at the splice.  It looked OK but I took a good grade of electrical tape and wrapped the splice.  No more rain problems so I would say any coax connection that is exposed to the weather is suspect.  Tape is cheap and you might be surprised.

 

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#8 OFFLINE   peds48

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Posted 21 June 2013 - 02:19 PM

Hi All
I had a simillar problem. All my sat readings were very good but any kind of rain would knock out my viewing. The dish had been realigned because of a new LNB and was on the money. I noticed that the tech had split and spliced the coax near the dish so he could get his meter in line so I got my ladder to take a look at the splice. It looked OK but I took a good grade of electrical tape and wrapped the splice. No more rain problems so I would say any coax connection that is exposed to the weather is suspect. Tape is cheap and you might be surprised.

SSTV


I will never recommend using electrical tape, because water WILL still get in but will be harder to evaporate
Here’s to the crazy ones.
The misfits. The rebels.
The the troublemakers.
The round pegs in the square holes.

The ones who see things different.
They’re not fond of rules, and they have no respect for the status quo.


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#9 OFFLINE   RunnerFL

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Posted 21 June 2013 - 02:25 PM

Weatherproof caulk is much better than electrical tape.


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#10 OFFLINE   texasbrit

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Posted 21 June 2013 - 02:50 PM

The alternating high and low signals on 99 and 103 suggest to me that it is an alignment issue.

 

Yes, we established early in the deployment of the slimline dishes that some alignment problems would often produce a pattern where odd transponders were lower than evens, or vice versa.



#11 OFFLINE   NR4P

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Posted 21 June 2013 - 03:01 PM

Hi All

I had a simillar problem. All my sat readings were very good but any kind of rain would knock out my viewing.  The dish had been realigned because of a new LNB and was on the money. I noticed that the tech had split and spliced the coax near the dish so he could get his meter in line so I got my ladder to take a look at the splice.  It looked OK but I took a good grade of electrical tape and wrapped the splice.  No more rain problems so I would say any coax connection that is exposed to the weather is suspect.  Tape is cheap and you might be surprised.

 

SSTV

 

The OP wrote the rain fade starts just before the storm gets there.   So if the dish isn't wet yet, then its a LOS issue.  Likely that the storm is between the dish and SAT.

 

I agree with others.  Get those 99c and 103c readings up by at least 10 points.  Won't stop the fade but will reduce the lack of signal time. 



#12 OFFLINE   texasbrit

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Posted 21 June 2013 - 06:19 PM

The rain fade will be worst when the storm center is between the dish and the satellites. Rain at the dish itself isn't the major problem, unless you have a faulty connector or an LNB with a cracked cover.



#13 OFFLINE   ThomasM

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Posted 21 June 2013 - 06:33 PM

I don't know anything about signal readings on the HD sats but his Ku band readings look excellent.  After 13 years with DirecTV, I know exactly how rain fade works.  Sometimes it's very weird because the sun could be shining and the channels drop out.  A quick visit to an internet weather radar site confirms what is going on.  A big thunderstorm to the Southwest right in the path from the dish to the satellites is the reason!

 

Anyway, rain fade can be expected in heavy downpour storms.  But after suffering with cable for 9 years it's a joke compared to all of their outages.  Granted, cable doesn't usually suffer from rain fade but when they have an outage it lasts for hours not minutes like a rain fade.  Usually when it's storming so hard that the signal drops below the threshold I generally have my DirecTV receivers unplugged from the wall as well as my TV sets (like I did this morning when a big thunderstorm came through).


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#14 OFFLINE   goinsleeper

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Posted 21 June 2013 - 09:00 PM

 A quick visit to an internet weather radar site confirms what is going on. 

Or stepping outside and taking a look towards the southwest...


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#15 OFFLINE   Weather88

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Posted 21 June 2013 - 09:07 PM

So far this summer, my satellite has been out before I even knew a storm was coming a few different times. I looked right at the radar and sure enough, a big t-storm was coming right from the SW.



#16 OFFLINE   TDK1044

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Posted 22 June 2013 - 07:07 AM

Losing the signal during a storm is really to be expected. The heavy rain clouds associated with severe storms are going to result in signal loss. I find that with normal or heavy rain, my signal is fine, but if a storm passes over head, I will lose signal until it has passed. If I total up the loss of signal  in terms of time though, it's less than an hour per year......nearer 40 minutes actually.



#17 OFFLINE   Weather88

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Posted 22 June 2013 - 08:49 AM

Losing the signal during a storm is really to be expected. The heavy rain clouds associated with severe storms are going to result in signal loss. I find that with normal or heavy rain, my signal is fine, but if a storm passes over head, I will lose signal until it has passed. If I total up the loss of signal  in terms of time though, it's less than an hour per year......nearer 40 minutes actually.

 

I've already passed the 40 minute mark awhile ago. For me, it can sometimes be 40 minutes per storm.



#18 OFFLINE   jimmie57

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Posted 22 June 2013 - 09:10 AM

I think you should tweak / peak out your numbers or have it done by DTV.

I am in the south also and we get a lot of stuff that comes in from the Gulf and out of the Northwest. My times are usually about 5 to 10 minutes. Once in a great while mine will be 20 minutes with a slow moving storm.

My 99c numbers are 96, 95, 95, 94, 95, 94, 95, 94

                                  95, 95, 95, 94,96, 95, na, na

 

My 103ca numbers are 88, 95, 92, 92, 89, 89, 95, 95

                                      90, 94, 95, 95, 91, 93, 95, 95

My 103cb is basically the same as 103ca


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#19 OFFLINE   HoTat2

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Posted 22 June 2013 - 11:52 AM

I would disagree with litzdog (sorry!). You have several signals on 99c, 103ca and 103cb down in the 70s or low 80s, and those are way below DirecTv's install verification (quality control) levels. All the signals on 99c, 103ca and 103cb should be in the high 80s at least, preferably low to mid 90s. A dish realignment should get your signals into this range. This should give you a chance of reducing the outage time due to weather.

Well I can't speak for the minimum IV acceptance signal levels for TS' locale texasbrit;

 

But here in the LA market my levels for 103ca have always been in the mid-70s with an occasional transponder or two making it into the low 80s at times. And 99c and 103cb always span the 80s with almost no transponder ever in the 90s.

 

Yet every time I've had a service call with an IV retest on the WO, it always passes.

 

Go figure ... :confused:  

 

Guess its because we don't get a lot of storms here in So. Cal. as to why those so-so Ka band numbers pass IV. :)


Edited by HoTat2, 22 June 2013 - 12:21 PM.

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#20 OFFLINE   ThomasM

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Posted 22 June 2013 - 05:22 PM

I've already passed the 40 minute mark awhile ago. For me, it can sometimes be 40 minutes per storm.

 

If you lose the signal for 40 minutes during ONE STORM and the National Weather Service isn't predicting Flash Flooding for your area your dish needs to be re-aimed or checked for a problem.  If the signal is just barely making it with no storm, any rain at all will cause your picture to go out.  


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