Multiple LNB on one dish question
- Thread starter Ectron1
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Megatron817
Administrator
I haven't tried 117w and 103w on the same dish but I think it would be hard to do with those dvb-s2 signals. May be possible to line up with 117w centered then find and pull in the dvb-s 12145 V 20000 transponder on 103w. Sounds like a good experiment though never know unless you try.
Terryl
Legit Prodigy
When looking at two or more satellites with multiple LNB's you should use the center satellite (with three LNB's) to start with, or with two satellites you mount the two LNB's at the same distance from center, (one on ether side of center) so in your case 117 minus 103 equals 14, divide that by 2 gives you 7 degrees from center on the two LNB's, this way all LNB's get as much signal as possible from the dish. You will also have to set the dish to point in-between the two satellites, this would be pointing at 110W.
You should also use an elliptical dish,(like a dish 1000) this type of dish has a wider receive beamwidth then a standard round dish.
You should also use an elliptical dish,(like a dish 1000) this type of dish has a wider receive beamwidth then a standard round dish.
Ectron1
New member
Thanks for the info, that should get me started. I ordered some multi lnb brackets so it will be fun to see what i can pull in. I have a dtv slimline elliptical dish that I could use as well, I may use it to pull in 87w and 99.2w or maybe vice versa. I'll just have to see how it goes. I'm confident I wouldn't be able to pull in everything on a single dish, although looking at some of the contraptions that they use over in India maybe lol.
Terryl
Legit Prodigy
Just remember that the signals will criss-cross each other with a dual or multiple LNB setup, with two LNB's the one on the right will be looking at the satellite on the left (looking from the back of the dish) the same with a triple LNB setup, the two outside LNB's will be looking at the other side satellite.
Hyper Casey
Visiting Staff
I may be way wrong here, but for some reason +/- 7 Degrees is stuck in my head so i had to post. Meaning if you are aimed at 103 with a Ku Dish, you could possible get 7 more degrees to the East and 7 more degrees to the West on a fixed Ku dish with a multiple LNB bracket. But then again maybe it is +/-70 Degrees on C Band. Now i am getting a headache, lol
lme
Legit VIP
it's +/- 9° between 2 addiacent sats: see dishnetwork sats 110°w & 119w°, bell sats 82°w & 91w°.
Ectron1
New member
I got around to getting started with putting the new multibracket on, I kept it centered on 103w for the time being for ease of tuning. After raising, bending and shimming with wood I have a good signal of 103w. I am trying to get a second lnb tuned into 99.2w but cant seem tune it in to to save my life. Is there lnb center to center measurement per degree of separation? What i mean is a center to center of X inches equates X degrees?
eastof111
BinThere
You're going to find that tuning 99 ku on a small dish such as yours will not work too well. You really need a minimum of a 120 cm or more for a ku dish for that sat depending on your location. See foot print.
99 Ku
I get zero PBS 12140v on this sat with a Geosat 90 cm dedicated to 99 Ku. Whereas, I was getting 11 db reception on a smaller DTV dish when PBS was on 125 Ku. Here's what I do get on the Geosat.
Montana PBS
and
Radio transponder
Here's an old 4 degree lnb bracket that used to work on an old DTV dish that were available years ago. You can see what 4 degree spacing with the appropriate lnbs looked like in the past. Not sure if you can find them any more.
As usual check the sat's footprint before you decided which ku sats you want to aim for. It will save you a lot of time and frustration.
99 Ku
I get zero PBS 12140v on this sat with a Geosat 90 cm dedicated to 99 Ku. Whereas, I was getting 11 db reception on a smaller DTV dish when PBS was on 125 Ku. Here's what I do get on the Geosat.
Montana PBS
and
Radio transponder
Here's an old 4 degree lnb bracket that used to work on an old DTV dish that were available years ago. You can see what 4 degree spacing with the appropriate lnbs looked like in the past. Not sure if you can find them any more.
As usual check the sat's footprint before you decided which ku sats you want to aim for. It will save you a lot of time and frustration.
Keith Brannen
Member
If the dish is centred on 103, then your off-set LNB is on the wrong side for 99 (as it is now, it is pointed in the 107 region).
When doing multiple LNBs everything is "backwards"! To the west of your centre LNB (higher orbital position), goes to the east of your centre LNB. Higher in the sky than your centre LNB, lower on your dish than the centre LNB.
When doing multiple LNBs everything is "backwards"! To the west of your centre LNB (higher orbital position), goes to the east of your centre LNB. Higher in the sky than your centre LNB, lower on your dish than the centre LNB.
Ectron1
New member
I've been using transponder 12095H 3676 (Infowars), since when my motor was working I never had any problems pulling that one in, I'm near the southern tip of lake Michigan so it appears that I'm about middle of the road on signal. Looking at that 4 deg lnb I'm thinking i may not be able to get my universal lnb's close enough together to make it work.