[time-nuts] LORAN-A GRI Timing Generator

paul swed paulswedb at gmail.com
Fri Jan 7 22:49:10 UTC 2011


I know it reasonably well. Though I don't think I ever saw that. But its a
heck of a ship.
Are you trying to hot it back up?

On Fri, Jan 7, 2011 at 5:37 PM, J. Forster <jfor at quik.com> wrote:

> Battleship Massachusetts has one, right near you.
>
> -John
>
> =============
>
> > Loran A wow. That is indeed ancient. Did you find a old receiver or what
> > that you are tinkering with?
> > Regards
> > Paul
> >
> > On Fri, Jan 7, 2011 at 5:28 PM, J. Forster <jfor at quik.com> wrote:
> >
> >> I just got to thinking a few minutes ago a Tektronix DD501 or a BNC
> >> digital delay would be just about perfectly suited.
> >>
> >> I really don't like SRS much. They have been really unhelpful lately.
> >>
> >> Best,
> >>
> >> -John
> >>
> >> ==================
> >>
> >>
> >> > Hi John:
> >> >
> >> > There are a number of options.  A couple that come to mind are:
> >> > (1) us a Stanford Research DG535, see:
> >> > http://www.prc68.com/I/TandFTE.shtml#DG535
> >> >
> >> > (2) use a PIC or other micro controller.
> >> > http://www.prc68.com/I/PIC16F88.shtml
> >> >
> >> > Have Fun,
> >> >
> >> > Brooke Clarke
> >> > http://www.PRC68.com
> >> >
> >> >
> >> > J. Forster wrote:
> >> >> I'm designing a simulator for LORAN-A...  YES, LORAN-A. It needs
> >> about
> >> >> 24
> >> >> different GRIs from roughly 50,000 uS to 30,000 uS. Rounded to
> >> integers,
> >> >> the GRIs come out to something like 49,407 uS.
> >> >>
> >> >> Does anybody have any simple ideas for generating such a signal. For
> >> >> simplicity, I'd like to use a standard crystal and no aardvaark
> >> parts.
> >> >>
> >> >> Thanks,
> >> >>
> >> >> -John
> >> >>
> >> >> ==============
> >> >>
> >> >>
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> >> >>
> >> >>
> >> >
> >> >
> >>
> >>
> >>
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>
>
>


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