how high

[brotherhood]

hi guys
how high should my pole be if i'm 55ft from the fence ,and its 6feet high?
also there is a school over the fence which is 105ft away from the house at 30ft high

 

[Dishpointer]

Being 55 feet away from the fence, you could use any pole from 2 foot to 6 foot. The satellites are actually above where your dish is pointed at so unless you have tall trees, you should be good to go. You want to keep your pole relatively short as the taller the pole you use, the more likely the wind is to making it wobble when you put your dish on. A pole 4-5 foot is ideal.

 

[brotherhood]

what about the school my friend?

 

[tvropro]

what about the school my friend?

Before I ever put up a dish I take a site survey. This includes making sure there is nothing in the way. I have a tool for that but one can use a compass, protractor or inclinometer and a flat piece of wood. Once I know where the dish will go I plan mounting and running cables. When looking for a clear line of sight it's good practice to make sure the bottom of the dish will be fully illuminated, some may just take a survey from center point up, the bottom could be obstructed if your close to some object. Plan carefully and you'll be glad you did.

 

[lumpkin666]

what about the school my friend?

Unless it's a REALLY tall school, it shouldn't be a problem at that distance (depending on your location and the sats you're trying to pull).

To give you an idea, I have my dishes pointing over my neighbor's home that is on a small incline. The garage is single story, and the home on the other side of the garage is 2 story. My dishes are planted approx 15-20 ft from the side of his garage on posts less than 5 foot, and I have no problems getting a signal.

 

[iammike]

The height a dish needs to be to clear an obstacle depends on the elevation angle of the satellite you're trying to hit. By dividing the height of the obstacle you're trying to clear by the distance your dish will be from the obstacle, and comparing it to the tangent of the angle of elevation for the sat in question you can figure it out. This assumes your dish is sitting on the ground. When mounting it on a pole, you can subtract the height of the dish from the height of the obstacle in your calculations.

For instance (dish on ground):

For the school, 30/105 = .2857
For the fence, 6/55 = .109

Tan 16.1 = .289

.289 is greater than .2857 so you should be able to hit any sat with an elevation of 16.1 degrees or higher. Of course you'll gain some height with any pole, so the actual minimum elevation will be lower, but I think you get the idea.

 

[brotherhood]

thanks guys
going to run my first motor on a 1.2meter dish .
i live in thompson manitoba canada