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Message: <blockquote data-quote="moonbase" data-source="post: 1004154" data-attributes="member: 178786">I was just wondering why they are only manufacturing two antenna sizes (2.8m and 3.0m) with a choice of F/D. None of the other sizes in the range come with a choice of F/D. The F/D for the 2.8m with focal length of 1207mm works out at 0.43, that is quite high compared to the rest of their range that only come in one F/D size, all of which are around 0.35 +/- one or two hundredthsI am not up to speed on the technical aspects of the suitability of different parabolic shapes and F/D versus wave length optimisation. Would the higher F/D ratio be more appropriate for Ka Band reception?Rgds</blockquote>