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» Datastorm Users Forum » General Interest Forums » DirecTV/Dish » Replaced LNB - channels breaking up badly

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Author Topic: Replaced LNB - channels breaking up badly
Don & Lori
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I have a setup from 2007 that Bill installed that has one dual LNB mounted at 7 on the bar. The cover cracked on the dual LNB and I had to replace it. Since replacement the signal tends to break up every few minutes regardless of what channel I'm watching.

Bill referenced satellites 99 and 103 as being the important ones, but my DirecTV receiver, which is set to dish type 02- 3-LNB (18” x 20”) only gives me satellite strength meters for 101, 110, and 119. There's no mention on the setup screens of satellites 99 and 103.

I checked the channels listed below from another thread. I get the ones on satellite 101, 110, and 119, but the 99s and 103s all fail.

I decided to move to a thread here instead of Bill and I chasing emails back and forth. That way we can have all the info in one place. Bill, if you see this, reply here instead of by email. It may prove useful in the future for someone else.

9501---101 Odd
9502---101 Even
9506---99B Odd
9507---99B Even
9508---103A Odd
9509---103A Even
9510---103B Odd
9511---103B Even
9512---110 Even
9513---119 Odd
9514---119 Even

Don Childers

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Don & Lori See America
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Bill Adams
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Don,
You are only receiving the programming from the 101 satellite no matter what your receiver might report. 99 and 103 are only required for HD programming so I must have misunderstood your question. What satellite are you assigned to and when you say it's set to 7, where are you seeing that number?

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Bill Adams
Winegard Company

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Don & Lori
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My Datastorm satellite assignment is 91W. I have a single bar (BOW?) extending from the side of the beam supporting the internet receiver, and on that bar is a single dual-LNB. That dual-LNB is positioned exactly where the previous one was, a quarter-inch or so inboard from where the number 7 would appear through the square holes cut in the LNB mounting bracket. I say it's exactly where it was initially because I can tell from the weathering on the bar where it was positioned for the last 4+ years, so when I installed the new dual-LNB I put it back exactly where you installed the original.

Re: your email, you're correct. I have never had HD programming or a DVR. Just the basics.

Given that, is the dish type 02- 3-LNB (18” x 20”)correct, or should I go to 01 - which I believe says round dish, or some other number?

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Don & Lori See America
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Bill Adams
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18" round is the correct setting for a DirecTV BOW. The correct setting for the BOW would actually show the number 7 inside both windows but your settings may vary. I would suggest that you look at the Signal Strength meter that is available from your DirecTV receiver and verify that you are getting 70-90 signal strengths on all (except the ones reading 0) transponders. If you are not then you need to move you BOW somewhat until you do.

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Bill Adams
Winegard Company

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Don & Lori
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Switched over to 01-18" round. Seems much better so far. I'll keep an eye on it.

My guess is the change happened because of the confusion between replacing my only dual-LNB and not stressing that. I guess not having HD is getting rare these days.

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Don & Lori See America
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Biker1956
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Having HD service is like when everyone changed from Black/White to Color TV's.

Once you watch it for a while, you hate to change to watch a channel that isn't in HD.

Don will sell you a LNB for your BOW that will get the 99/101/103. [Smile]

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Don & Lori
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We're still getting some breakups, but it's definately improved from what it was before. Here's some test and signal strength data.

What's my next move??

First I tried tuning these two channels:
9501---101 Odd
9502---101 Even

Both of these are tunable.

Transponder strengths:

First test:
97 98 0 0 0 98 97 99
96 98 99 100 97 0 0 0
96 0 97 100 97 98 98 98
97 49 96 100 97 98 96 98

Second test:
97 98 98 0 97 98 97 99
96 98 98 100 97 99 96 98
96 0 97 99 97 98 97 98
97 47 96 100 97 98 96 98

Note that in test 1, transponders 3, 5, 14, 15, 16 were 0, but show good numbers second pass.

Transponder 26 shows very low number both passes.

Third test:
100 98 98 0 97 98 0 0
0 96 0 0 0 99 96 98
95 0 97 100 97 98 97 98
97 48 96 100 97 98 96 98

More zeros in the third test, but transponder 26 still way low.

Would a 1/4 inch move from where the LNB was originally mounted to the exact placement over the 7 be one way to try curing #26?

Are the moving 0s an indication of a problem, or dependent on what happens to be transmitted at the moment of the test?

Added: I checked most of the 0s with the individual signal strength bar. 4 and 18 remain 0 over an extended period. The others settle around high nineties after a second or two. 21 is doing a lot of bouncing from 0 to 97.

[ January 17, 2012, 08:35 AM: Message edited by: Don & Lori ]

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Don & Lori See America
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Bill Adams
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The numbers are all good. You will have 0's where you are out of a spot beam and you will have low numbers where you are on the edge of a beam so this is all perfectly normal. It appears that you have issues with your receiver except that none of the numbers should be bouncing from 0 to 97 so that part still leaves me confused.

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Bill Adams
Winegard Company

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Don & Lori
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Are minor adjustments in placement on the BOW likely to clear up the 47 strength on transponder 26 or the wavering on transponder 21? I'm about 1/4" from centering 7 in the cutout on the LNB mount.

It sounds like my real solution is to replace the receiver, but I'm curious why this problem only surfaced when I replaced the failed LNB. I powered off everything when I made the swap.

ETA: Another test series shows the wavering on transponder 21 has cleared up.

[ January 17, 2012, 12:50 PM: Message edited by: Don & Lori ]

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Don & Lori See America
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