[time-nuts] Re: Kinemetrics Truetime 468-DC usability

[paul swed]

Matt
Very happy to see that you designed a more modern version with an Atmel
device and a nice board also.
Glad to see you have a old DC468 working. I always liked the display.
Would love to see your code out of curiosity. Especially how you are
handling the 1 second timing.
Lets see that now means there are 2 DC468s that can display time.... Humor
Thanks
Paul
WB8TSL

On Fri, Sep 1, 2023 at 5:58 AM D. Resor via time-nuts <
time-nuts at lists.febo.com> wrote:

> Thanks everyone for your help and input.  It seemed a bit suspicious that
> I could not find any current information on what is obviously dead
> technology.
>
> Don Resor
>
> -----Original Message-----
> From: Tom Van Baak via time-nuts <time-nuts at lists.febo.com>
> Sent: Thursday, August 31, 2023 1:49 PM
> To: Discussion of precise time and frequency measurement <
> time-nuts at lists.febo.com>
> Cc: Tom Van Baak <tvb at LeapSecond.com>
> Subject: [time-nuts] Re: Kinemetrics Truetime 468-DC usability
>
> Hi Don,
>
> The GOES timing service went off the air almost 20 years ago. An extremely
> informative article:
>
> "The GOES Time Code Service, 1974–2004: A Retrospective"
> by Michael A. Lombardi and D. Wayne Hanson
> https://tf.nist.gov/general/pdf/2013.pdf
> also available at:
>
> https://www.nist.gov/publications/goes-time-code-service-1974-2004-retrospective
>
> The old Truetime receivers are still found on eBay now and then. Some
> people buy them just to re-purpose the 1U case and attractive plasma
> digital display. The display tubes are sometimes discussed over on the Neon
> / Nixie mailing list
>
> /tvb
>
> On 8/31/2023 12:23 PM, D. Resor via time-nuts wrote:
> > There is a very reasonably priced working Truetime 468-DC receiver
> > available for purchase.
> >
> > I found and downloaded the Op/Installation guide.
> >
> > I have tried searching for some answers via the internet but came up
> > with no definitive answers.
> >
> > While searching for information concerning the GOES Satellite.  I was
> > unable to determine if the East/West frequencies 468.8250 MHz and
> > 468.8375 MHz are still in use.
> >
> > According the manual there were two options for the GPS antenna, the
> > A-468MS or the A-468H.  Seems these are both more rare than hens
> > teeth, and if found can be very expensive.
> >
> > Must one of these two above mentioned antenna models be used, or can
> > newer/later GPS antenna be installed instead?
> >
> > Seems this unit does not suffer from the 25 year calendar roll-back.
> >
> > Opening a can of worms here I'm sure, are there any other condemning
> > considerations I have overlooked?
> >
> > Thank You
> >
> > Don Resor
> _______________________________________________
> time-nuts mailing list -- time-nuts at lists.febo.com To unsubscribe send an
> email to time-nuts-leave at lists.febo.com
> _______________________________________________
> time-nuts mailing list -- time-nuts at lists.febo.com
> To unsubscribe send an email to time-nuts-leave at lists.febo.com