[Elecraft] K2 Encoder Question on 7415 build

[N4KTR]

Glenn,

I just passed this point in the build of my K2 (7418) and didn't have any
difficulty.

The instructions on p. 32 specify the length of the four wires as 1.5" and
this was more than enough length to properly connect the front panel board
to the encoder pony board. With the encoder pony board soldered to the back
of the encoder, and the encoder, in turn, bolted to the front panel, the
distance between the encoder pony board and the front panel board (also
attached to the front panel) is fixed. In other words, the wire length
doesn't determine this spacing but needs to be of sufficient length to span
this distance. On my front panel assembly, this distance is just under
7/16", a distance easily spanned by a 1.5" wire. Check to see how you're
sequencing this part of the assembly; i.e., the four wires don't get
soldered to the pony board until this distance is already established by the
mechanical assembly.

As for the control board to encoder pony board spacing, I agree it appears
to be tight. I wasn't aware of the errata Don mentions and, therefore,
didn't initially flush trim any of the interference on the control board.
Upon initial fit of the control board, the back of the encoder pony board
appeared to get hung up on the pins for the U6 socket on the control board.
Once I flush trimmed the lower row of those (plus the IC pins on the pony
board), there appeared to be adequate clearance. I've completed all
resistance checks up to this point as well as the initial power-up without
any problems.

Scott
N4KTR



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