[Elecraft] Board trace images

Bob Myers [email protected]
Tue Apr 13 01:40:01 2004


Bob/Lyle....  Those of us who produced the AMSAT Journal in those days 
wondered if you guys were really going to pull off getting those 
satellites working and into orbit. You guys sure amazed me! The Amateur 
Radio Satellite Program was really intense during those years. And the 
"Ham Shack Tack-Together" hardware worked fine in space! My updated K2 
s/n 1434 doesn't even come close to the mods made on the satellites. 
Fun time. Neat memories!

Bob W1XT
K2 1434
Scottsdale, AZ



On Apr 12, 2004, at 10:02 PM, Lyle Johnson wrote:

> 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.
>
>
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