Ron D'Eau Claire wrote:
For example, in the KXB3080
installation, there's a small daughter board with two toroids on it and the
solder pads are very close together. One wire runs very, very close to
another wire's solder pad as it loops around the edge of the daughter board
to its own solder pad behind it. We tell the builder to leave 1/8" of enamel
on that wire just to avoid the possibility of a short circuit in case it
gets pushed against the solder pad.
There are been a number of builders who didn't read the procedure and tinned
the wire all the way to the core. Then they had to troubleshoot the KXB3080
assembly to locate the short. It's an easy fix: just pull the wire away from
the pad, but it underscores the importance of reading the procedures. Even
highly-experienced builders need to read each step and note the critical
information even if their method of doing the job is a little different from
what is described.
Thanks for a well timed comment, Ron.
I was just putting my KXB3080 together - and things weren't working -
when I read it. Over enthusiastic enamel stripping turned out to be the
problem here; in my case I've solved it in a rather inelegant fashion by
putting two (very) short lengths of insulation from some hook up wire
onto the end of L2-1 and L1-1.
It would have been much better to get it right first time, of course,
but it all works now - I've just had my first 80m QSO on the KX1.
So - thanks again.
David - G3XLW
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