Adding options to the K2 is, generally speaking, very easy, and the
order doesn't matter a whole lot. There is one exception: some of the
options require parts to be placed on the back portion of the board.
The power transisters use the bottom back panel as a heat sink, and they
are assembled as a stack of transistor, washer, and heat transfer pad --
the assembly is not too bad on initial assembly, but trickier to
dismantle and reassemble. It may require replacement of the pad.
So, there is a big advantage in putting the connectors (and a few
capacitors) in place to make ready for future options. The parts are
described in the main K2 manual, but are only supplied in the option
kits. (The "re-work eliminators" are also available, which add jumpers
to make removing options easier.)
Four of the options you list put something on the back part of the
board, so would require removing and replacing the heat sink if you
don't have the kits at hand on initial assembly. Don Wilhelm says that
the KIO2 and KAT2 have no board headers, but he slipped here -- there's
a socket for the KAT2 that just tucks in behind the heat sink.
The KAT2 is such a good option, maybe that socket could just be sent
along in the main kit, for people like me who don't look far enough
ahead?
Peter N8MHD
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