Hello friends,

I have seen these AT-1011 bases in two different configurations. Attached are pictures of the two kinds I’ve seen. They both appear to have the same AB-1335/G designation. One has a flat bottom, and the other has a bottom that protrudes below the mounting surface. Does anyone know the reason why these two exist and if there is anything electrically different about them? Power handling? Anything?

73 Eugene W2HX
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