[time-nuts] GPSDO recommendation

paul swed paulswedb at gmail.com
Wed Oct 12 19:36:08 UTC 2011

Now this is some very wise advice indeed.
Its the ole power cost.
Great reply and solution.
I like things that draw zip power and can live on a basement wall for 10
years just doing there job.

On Wed, Oct 12, 2011 at 2:14 PM, Chris Albertson
<albertson.chris at gmail.com>wrote:

> On Wed, Oct 12, 2011 at 4:33 AM, Peter Gottlieb <nerd at verizon.net> wrote:
> > I would like to get better than 100 uSec so I can get a couple of degrees
> > resolution on a synchrophasor project.
> You are in luck 100uS is is the range of "easy to do".     Setting up
> an NTP servers is a different task from setting up a GPSDXO.   One
> does not need a GPSDXO for NTP.  The Thunderbolt is likely the lowest
> price GPSDXO but by the time you get an antenna and power suply and
> cables you will have spent abot $300.  It will drive an NTP server to
> bette than your 100uS requirement.
> But you can also buy a Motorola "Oncore" series GPS for as little as
> $18 on ebay and it will run NTP just as good as the Thunderbolt.  For
> $60 you can buy a brand new Oncore with warenty and tech suport and it
> is an order of magnitude better.
> If budget is important be sure an look at the cost of electric power.
> It is easy to burn up $250 per year of power or even more.   Those
> "junker" PCs you find indumpsters are not cheap if you run then 24x7.
>  I found a brand new intel Atom powerd machine pays for itself.  Use
> a 16GB flash drive or even have it boot off the network and have zero
> local storage.
> --
> Chris Albertson
> Redondo Beach, California
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.

More information about the time-nuts mailing list