Re: gEDA-user: OT: large (29 inch) boards?

[Dave McGuire <mcguire@xxxxxxxxxxxxx>]

On Dec 23, 2009, at 1:06 AM, Dave N6NZ wrote:
> Back in the days when I was a CPU designer, we did backplane boards  
> much larger than that.  I once spec'ed out an impedance controlled  
> (IOW: very thick) PCB that was 42" x 6". Yes, everybody thought I  
> was nuts.  I probably was/am, but let me tell you with an impedance  
> controlled PCB, and passive pull-up/pull-down termination at both  
> ends, the signal edges were text-book clean.   I don't remember  
> what it cost, but that was ages ago so it wouldn't be useful  
> information today.  For that matter, the box it went into sold for  
> a cool $1M, and only used 6 of these boards, so it didn't matter  
> then, either :)

   Ok, I gotta ask...what was this machine?  It sounds like something  
I'd be very much interested in.  And maybe something I already have. ;)

              -Dave
>

-- 
Dave McGuire
Port Charlotte, FL






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