having issues with Mutliple lnb on c band

[oceansatellite]

Spent a lot of time today trying to get some multiple lnbs on a sold 8 footer. I get a rocking signal on anything i center it on, had 87% quality on the wyoming NBC channel on 99w, but as soon as i try to go for an offset additional lnb, quality drops dramatically. I'm taking a 5 degree difference from dead center. Any suggestions, or is stacking any multiple lnbs on a c a limitation.

When i was centered on 99w, the best i could do was pick up a few hot transponders on 91w.

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[hwm]

I am currently using three LNBs on my ten foot Winegard mesh dish. The center one is set to 99w, and the offset ones are for 91w and 103w. I can get every transponder listed on the center LNB, but generally cannot get some weaker ones on the offset LNBs.

A couple of suggestions: fine tune your skew settings on the offset LNBs, and try angling them in towards, and even past the dish center just a little bit. Tiny adjustments in the LNB position make a big difference in signal Q . You gotta work hard to find the sweet spot. A receiver with a signal beeper set up with a small TV right by the dish helps a lot. Peak your signal on the weakest transponder once you find the satellite you want.

I think the bottom line is that some weaker transponders are not going to be strong enough to receive with an offset from center LNB on an 8-foot dish, or even a ten footer.

Facing my dish the LNBs are left to right: 91w, 99w, 103w.

[Cham]

I can get 91, 99, qnd 107 quite well on one 8' dish. This dish has a long focal depth though which makes a difference. The longer the focal depth the better it will work with multiple feed horns.

[gabshere]

this is why i inquired in another thread . if you can find extra scalers , maybe modifing them / cutting them to be placed closer to center will allow or cut down on signal loss. I know others have posted pictures of those scalers , Iceberg is one that comes to mind here at the forum. I just don't know how much you gain from adapting two or three scalers together. Seen commercial ads where in asia or even australia you can purchace multiple lnb scalers . it would be nice to fine and test one of those.

[oceansatellite]

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I am currently using three LNBs on my ten foot Winegard mesh dish. The center one is set to 99w, and the offset ones are for 91w and 103w. I can get every transponder listed on the center LNB, but generally cannot get some weaker ones on the offset LNBs.

A couple of suggestions: fine tune your skew settings on the offset LNBs, and try angling them in towards, and even past the dish center just a little bit. Tiny adjustments in the LNB position make a big difference in signal Q . You gotta work hard to find the sweet spot. A receiver with a signal beeper set up with a small TV right by the dish helps a lot. Peak your signal on the weakest transponder once you find the satellite you want.

I think the bottom line is that some weaker transponders are not going to be strong enough to receive with an offset from center LNB on an 8-foot dish, or even a ten footer.

Facing my dish the LNBs are left to right: 91w, 99w, 103w.

Thanks for all the advice. After playing around quite a bit and shimming the base (its a circular ring floor mount) I determined i am not completely level. Once i build a foundation and get a fixed and level installation, I'll go back and retry.


Btw, stay the HELL away from a woman on dhgate.com who sells c band brackets for adding lnbs to a c bAND. The quality is horrible.

[PopcornNMore]

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I can get 91, 99, qnd 107 quite well on one 8' dish. This dish has a long focal depth though which makes a difference. The longer the focal depth the better it will work with multiple feed horns.

This now makes me wonder about my setup as seen in another post about Memorial Day projects. I thought having the scalar rings close together provided exactly 8 degrees separation. This could possibly explain why I was having trouble this weekend receiving Anik F1R at 107 with Galaxy 16 at 99 centered.

Would you please measure center to center and provide us with the measurement? Scalar ring touching scalar ring is 6.25" center to center. Your setup is probably more around 8" center to center.