MSG-1 Dish alignment and wind
I have real problems because my dish is mounted in the only place on my house
where I can see MSG-1. I am going to fix a mild steel rod from the mounting
pole to the wall some way from the bracket so that I have a strong triangle.
Today I have tried to damp the oscillation of the dish on the pole by placing a
light rubber rope around the bottom of the dish and the bracket, there is
hardly any tension on this but I hope it will stop pole and dish oscillating in
sync and thus amplifying small movements. I'll have to see - when the wind
My unavoidable dish-exposure is slightly compensated for by the fact that I am
exposed from west through north to east, whereas the prevailing winds are from
the south west - even a SW gale leaves my garden calm, though the clouds race
SO I'm hoping that with some damping and far fewer NW winds I will not suffer
too much loss over the year. Those of us with similar problems can keep one
another posted through the list.
Quoting Arne van Belle <firstname.lastname@example.org>:
Professor Robert Moore
Department of Sociology, Social Policy
and Social Work Studies
The University of Liverpool
Eleanor Rathbone Building
Bedford Street South
tel and fax: 44 (0) 1352 714456
The extra rod will give you much more rigidity and should cure any problem you have with dish movement 'if' the pole is moving in the wind enough to lose the signal. One of the satellite dish makers used to do a fitting just like that using a 60cm length of right angled steel with a simple bent plate bracket for the wall end, one hole for the wall bolt and one for a coupling nut and bolt. The other end of the rod bolted on to the dish end of the mounting arm, simple but very effective.toggle quoted messageShow quoted text
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On 12/10/2003 at 17:55 Robert Moore wrote:
I have real problems because my dish is mounted in the only place on my
Hello Robert and Hugh,
Finding the right spot to mount your dish is not easy.
But with some simple re-inforcements you can stiffen the existing
mount. Placing a rod "triangling" the existing mount will help a lot
and does not put in much weight.
You could also try to use a pre-tensioned steelwire from a fixed
point to the pole just below the dish mounting to dampen.
Don't think that a mesh dish is a solution here. At this high
frequency the mesh should be minimum 2mm and won't be very open when
hit by a gale.
You could try a bit smaller dish, this has less surface and a wider
beamwidth, relaxing a bit on the stiffnes of the mount.
Arne van Belle