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>>> 119 LNB Extremely Sensitive to Rain Fade <<<

 
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Captain Spaulding is offline Old Post 05-20-2004 10:42 PM
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Captain Spaulding
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Registered: Jan 2001
Location: Centerville, Ohio
Posts: 15

Question 119 LNB Extremely Sensitive to Rain Fade

Every time it rains, I lose the signal completely on 119. I lose HDNet and HBO HD. It then takes quite a while for the signal strength to recover, longer than it should. On clear days the signal is fine. When I do a system test during the outage, I get a message that says the right side of 119 can't be detected.

Could there be something wrong with my 119 LNB? Is there something else going on here?

Help Please! This is very frustrating!!!

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the-sloth is offline Old Post 05-20-2004 10:47 PM
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the-sloth
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since i swapped out my round dish for my oval dish i've noticed a HUGE difference... mine used to drop out only in the worst of storms.. now any time i get moderate rain, i get pixelation and drops. and all of my signal strengths are 93+ on all three sats.

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litzdog911 is offline Old Post 05-20-2004 10:56 PM
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litzdog911
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It could be an aiming/alignment issue. What are your signal strengths on the 119-deg satellite when the weather is good?

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zaknafein is offline Old Post 05-20-2004 11:01 PM
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zaknafein
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Registered: Jul 2001
Location: Kansas City, MO
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quote:
Originally posted by the-sloth
since i swapped out my round dish for my oval dish i've noticed a HUGE difference... mine used to drop out only in the worst of storms.. now any time i get moderate rain, i get pixelation and drops. and all of my signal strengths are 93+ on all three sats.


The eliptical dishes are a bit of a jack-of-all-trades-master-of-none kind of thing. They sacrifice signal quality for aesthetics. They are a bit larger than the 1 satellite 18" dishes, but their focal area for each LNB is actually smaller.

You could put up 3 seperate dishes, pointed at each different orbital location, but few people want to have that hanging off their house.

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litzdog911 is offline Old Post 05-20-2004 11:03 PM
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litzdog911
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Registered: Oct 2002
Location: Mill Creek, Washington
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quote:
Originally posted by zaknafein
.... You could put up 3 seperate dishes, pointed at each different orbital location, but few people want to have that hanging off their house.


Oh, now it doesn't have to look *that* bad

Attachment: antennafarm1.jpg
This has been downloaded 200 time(s).

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Captain Spaulding is offline Old Post 05-21-2004 04:04 AM
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Captain Spaulding
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Location: Centerville, Ohio
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quote:
Originally posted by litzdog911
It could be an aiming/alignment issue. What are your signal strengths on the 119-deg satellite when the weather is good?


Depending on the transponder, signal strength is normally in the mid 70's to mid 80's.

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nuke is offline Old Post 05-21-2004 04:48 AM
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nuke
Senior Member

Registered: Sep 2003
Location: Campbell, CA USA
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It needs tweeking. Mine never fades and I have strengths up to the 90's on all 3 birds, depending on the xponder selected.

It could also be a weak LNB.

I'd start by checking the mast it is plumb with a bubble level and a little pre-loading weight to simulate the weight of the dish.

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bdlucas is offline Old Post 05-21-2004 08:26 AM
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bdlucas
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Registered: Feb 2004
Location: Westchester Co., NY
Posts: 236

Re: 119 LNB Extremely Sensitive to Rain Fade

quote:
Originally posted by Captain Spaulding
Every time it rains, I lose the signal completely on 119. ... It then takes quite a while for the signal strength to recover, longer than it should.



Have you checked your connections to see if they're well sealed against water? I once had a problem with "rain fade" that had gradually gotten worse over the course of a couple of years, and finally one of the LNBs appeared to stop working altogether. Traced it to a poorly sealed connection that had gradually corroded to the point that the center conductor broke. (I'm embarrased to say I replaced the LNB before thinking to check the cable and connections.) Your comment about recovery time sounds like it could be due to water getting into a connection and then taking some time to dry out.

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patjoy is offline Old Post 05-21-2004 07:57 PM
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patjoy
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Registered: Feb 2004
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Posts: 40

bdlucas,
One thing that you have to be aware of in the case of a leaky connector, is that the longer it is allowed to leak the more the coax is exposed to water. Coax can absorb the moisture and actually carry it down the coax via capillary action. This will eventually cause the coax to become more lossy and attenuate the signal more and more. Eventually requiring the replacement of the entire length of line. I have had this happen.

Pat

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>>> 119 LNB Extremely Sensitive to Rain Fade <<<

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