[Elecraft] Board trace images

[Lyle Johnson]

The layout software check plots showed ground pads to the planes, but it
mostly didn't actually place them on the actual copper!  An astounding
collection of jumpers...

And you should see what had to be done on UO-11 (just had its 20th
anniversary in space last month :-)  We had to cut out a section in the
center of a PC board to clear a horizontal crystal so we could close the
case. Then re-create the section of board with jumper wires around the
crystal - maybe 10 or 20 jumpers in all.  But those were white wires; we
couldn't find blue ones :-) Maybe it was bad design, but we had from 29 July
1983 -- when we discovered the launch opportunity -- until 01 December OF
THE SAME YEAR to design, construct, test and deliver the satellite.  And do
it in our spare time...

Bob, did we have hair then?

-Lyle KK7P

> Ooops make that 8 layer boards, I forgot, we were really getting
> ambitious.
> These were AMSAT's AO-16, DO-17, WO-18, and LU-19.  The computers survive
> to the best of our knowledge 'til today except for those that have dead
> and useless batteries.
>
> Bob
> > Lyle Johnson and I helped to build four spacecraft with 6 layer boards
for
> > spacecraft to fit a large memory ram disk into the first four Microsats.
> > Lyle did the design, I managed the build of the computer at a fairly
> > untested board house who were itching to try their new 6 layer layout
> > process in 1989 and Harold Price NK6K wrote most of the software, I
wrote
> > the rest.