Dumb question #ubitx

Brian L. Davis
 

Waiting for my uBitx and reading all I can but have a question.
With all the sketches available, which one is which?
I see some that are for the 20 meter board, some for the 40  meter board, some reference to the uBitx all band board.
Which is which, or does it matter?  Are they interchangeable?
Just confusion in my old age so all the help I can get is appreciated!

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