I thought that there was only one type of feed arm assembly for the "Type 120" dish that us hobbyists generally have, those that fix through the dish and link up at the lnb holder. Like so;
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They are fixed by bolts through the back;
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But now I've spotted these images of a slightly different arrangement, note the sidearms and how they are fixed to the lnb holder;
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It still looks like it is aimed at a central position to me! Also it looks like it gives more clearance for the attached feed horn.
Anyones else have feed arms like this on their Channel Master dish, or has seen one before? Does anyone think that the fact that it is probably (according to the logo!) an "Andrews" dish make any difference (which would make it newer!). Thought that they were all the same?