With the imminent launch of Freesat this afternoon, the question is whether you will be able to receive the service at your location. Freesat has 98% coverage across the UK and only if you don’t have a clear line of sight to the satellite, will you not be able to get it. So, how do you check the clear line of sight? Just go to DishPointer, enter your address (street address rather than just postcode as the second part of the postcode is omitted) and then select 28.2E Astra from the satellite list. A satellite image map of your house should show up with a marker and a line indicating the direction of the Freesat satellite signal. You need a clear line of sight along this line. The big marker can be moved by clicking and dragging it to the exact location of your dish. The small marker is to calculate the maximum height of any obstacles along the line without interfering with the signal. “d” stands for distance to the obstacle and “h” for the maximum height it can have.
There is a tree right on the line not far from your dish. You’ve dragged the marker and got “d” = 20m and “h” = 10m. Your dish is on the roof at a height of 8m.
This would mean that the tree is 20m away and that the tree must not be higher than 10m from the base of the dish or 18m from ground level. If it’s any higher than you’d have problems with the signal reception because there wouldn’t be a clear line of sight.