[time-nuts] LORAN-A GRI Timing Generator

[J. Forster]

It's in the Chart Room. The ship is always looking for technical help, BTW.

Yes,

-John

===============



> 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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>>
>>
>