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Re: [midatlanticretro] oscilloscope wanted

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  • Jim Scheef
    Chris, Most any ham radio club will have one or more members who can calibrate a scope. The club that co-sponsors TCF might be a good place to start. Jim
    Message 1 of 12 , Jul 20, 2005
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      Chris,

      Most any ham radio club will have one or more members who can calibrate a
      scope. The club that co-sponsors TCF might be a good place to start.

      Jim

      --- Chris M <chrism3667@...> wrote:

      > Bill and all, I posted a message on electronics_101
      > about an older HP 100 mhz scope I've been offered -
      > wanted to get some feedback. Someone submitted that
      > Tektronix 7000 series scopes are plentiful on Ebay
      > say, and "reasonable", so you can always find parts or
      > whatever. Keep in mind though that scopes need to be
      > calibrated, and a roomful of test equipment is needed
      > for that task. There's always people that can perform
      > this service, believe me some people actually have
      > loads of this stuph and are able to work from their
      > spare bedroom or whatever. Not sure what something
      > like that costs, haven't even touched a scope in
      > years, but I was told that you can get them already
      > calibrated on Ebay or wherever. It helps to have a
      > certificate from a reputable lab though.
      > There used to be hardware/software to turn puters
      > into oscilloscopes/logic analyzers. There was even a
      > program called SoftLa some years ago that didn't even
      > employ any hardware I don't think that turned a 486 or
      > whatever into a multi channel logic analyzer. And it
      > was cheap.
      > The reality is, there are always back doors. I
      > remember reading on some site that to align a floppy
      > drive, you need to move the head forward (or
      > backward?). I was staring at a pc drive the other day
      > and it seemed logical. The trick I guess is to do it
      > reliably/repeatably, perhaps by utilizing a piece of
      > precision screw and some kind of nut, like the way the
      > lead screw on a lathe operates. I'm just rambling now,
      > but there might be some sanity to such caterwauls.
      > The truth is though, if a cheap scope found it's way
      > into the arsenal of every vintage megalomaniac, it
      > wouldnn't hurt at all. I'm sure an old 20mhz Tek could
      > be found for next to nothing.
      > I'll report any new findings as they're found :)
      >
      > --- billdeg@... wrote:
      >
      > > Thanks for all of your replies. I will let you know
      > > how it turns out.
      > > Bill
      > >
      >
      >
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