Re: tilt angle of TVRO dishes terrestrial 13cm use

Pete G4HQX

If the feed arm is at the bottom the face of the dish will need to be tilted down around 25 degrees from the vertical. If you measure the height (h) and width (w) of the parabolic face the theoretical angle is given by arccos(w/h). You can mount the dish with the feed arm at the top which is sometime more convenient and the dish is then angled upwards. In  practice it’s useful to be able to alter the elevation a few degrees either way.


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