A number of questions that I have received have prompted me to publish the following images that show a close up of the Tri-pod Dish mounts that I used on 3.4 and 5.7Ghz.
The assembles were constructed using galvanised post stirrups that are available at a number of hardware stores.
The stirrups were bent to produce an angle of 68degrees from the horizontal or if you prefer the reciprocal 22degrees from the vertical. This angle was then reinforced by inserting a gusset into the open end. I could have weldered the gusset but decided that the bolted gusset gave me a little more flexibility as some dishes require a 65 degree angle.
These angles ensure that the focal point of the dish points to the horizon.
There a number of anticles on the internet that discuss how to calculate the angle that is required for specific types of dishes.
I am sure the creative among you have other ways to solve this problem but this method worked for me.
The whole assembly is bolted to the try-pod using a 5/8 whitworth galvanised bolt that is usually supplied with this type of tri-pod.
In using this method the Dish mounting the mounting pipe for the dish is set at the correct angle to mount the off-set dish.
I hope those who are attempting to use this type of tri-pod are able to gain some ideas from these images of the solution I used to good effect.