Triax multiholder?

Zaphod

Trying to set up one of these last night, and I ended up with the distinct impression that these brackets are unsuitable for reception of 28E, 19E and 13E in Ireland - the tilt in the bracket in insufficient to allow for the different elevations.

Admittedly it was dark, and I was doing it by flash light, but the LNBF for 28E would need to be a good 1cm higher than the bracket allows for.

Or am I just thick?

Tony

Your definitely not thick The tilt has to be at maximum , hotbird lowest right next to the lnb main arm and astra 2 highest right at the end of the bar. I usually line it up on hot bird and then adjust the elevation of the dish to get acceptable level on astra 2 and then go back to hotbird. Set the bar elevation before attaching the lnb brackets so you get maximum elevation. Hope this helps

Zaphod wrote: »

Trying to set up one of these last night, and I ended up with the distinct impression that these brackets are unsuitable for reception of 28E, 19E and 13E in Ireland - the tilt in the bracket in insufficient to allow for the different elevations.

Admittedly it was dark, and I was doing it by flash light, but the LNBF for 28E would need to be a good 1cm higher than the bracket allows for.

Or am I just thick?

byte

I had similar problems, until Watty advised me to flip the LNB bar upside down (ie. not like the way it's shown on the instruction sheet), which allows you more freedom with tilt.

Zaphod

I had a go at it again last night with the Satlook and in light, and no matter what way I fiddled with it, it was always better if the LNBF for 28E was higher than the bracket allowed. So in the end I put the 13E and 19E LNBFs on the triax, and connected the 28E LNBF to the 19E one with one of these.

Looking at the instructions, the triax appears to be optimised for reception of 19, 16, 13 in Scandanavia which would be nearer the top of the arc from that location and where the arc is flattest.

Tony

Is the bracket one of these? http://www.satellite.ie/acatalog/triax_multi_lnb_bracket.html

If it is i've run quad lnbs for astra 2/hotbird without any problems

Zaphod wrote: »

I had a go at it again last night with the Satlook and in light, and no matter what way I fiddled with it, it was always better if the LNBF for 28E was higher than the bracket allowed. So in the end I put the 13E and 19E LNBFs on the triax, and connected the 28E LNBF to the 19E one with one of these.

Looking at the instructions, the triax appears to be optimised for reception of 19, 16, 13 in Scandanavia which would be nearer the top of the arc from that location and where the arc is flattest.

Zaphod

That's the one. I could get it to work after a fashion, but it was much better if the LNBF was risen - a lot more rain reserve.

Tony

Thats true no harm in having a bit extra. I guess this is a design flaw as it should allow you to correctly elevate the bar.

Zaphod wrote: »

That's the one. I could get it to work after a fashion, but it was much better if the LNBF was risen - a lot more rain reserve.

biologikal

Zaphod wrote: »

So in the end I put the 13E and 19E LNBFs on the triax, and connected the 28E LNBF to the 19E one with one of these.

I use something similar on my 13/19/28 setup (not plastic, some kind of alloy), though mine has 3 instead of 2 in your pic. The central one (19) is perpendicular to the dish, but to get the best quality signal on 28 and 13, the outer two are rotated on the z-plane, kinda like "toe-in", if you know what I mean - it's like to make all 3 LNBs point to the same spot on the dish. I'm getting 75-85% quality on everything I want to watch with an 80cm dish. And they haven't budged in 3 months, even with all the wind we've been having recently.

joe25

Hi I have to set up one of these later.
Dish is at 19east already and want to receive 19.2 and 13east.
Instructions with it not great.From my reading it says to put lnb out to 16 on the scale(which is right at the end) which seems a bit far out.
Can anyone help me?

biologikal

I think it wants you to direct the dish with original LNB at 16 (in between 19 and 13), fix the dish at 16, then replace the LNB holder with what you have in the picture, and then make minor adjustments to each LNB to optimise the signal for each.

BTW, where did you get it from, and how much? I need something similar for a 60cm Sky dish to get 28E and 19E (reckon I'll need to point dish at about 23.5). Will this work with a Sky dish? The end piece looks similar.

Tony

biologikal wrote: »

I need something similar for a 60cm Sky dish to get 28E and 19E (reckon I'll need to point dish at about 23.5). Will this work with a Sky dish? The end piece looks similar.

No such bracket exists and 60 cm is too small in any case I'm afraid.

watty

You can get the required tilt OK by reassembly completely upside down / back to front, so hole used on arm to bar is at bottom instead of top.
For even more tilt and dish pointed not as far east, drill a new hole about 2" further along, at bottom edge. Then 28E is not about to fall off if 13E & 19E are on either side of main arm.

watty

You need a MIINIMUM of a 80cm dish for multi-LNB.

joe25

Thanks for info.Its a 88cm triax.
I was setting up for 3 hours one signal high and other not good.
Could not get it right and it was only when i was driving home it hit me how to fix it.It just shows sometimes your better off walking away and having a think about it.

willowthewisp

Not sure guys.