Re: Cost effective time servers

[Mel Beckman <mel () beckman org>]

Warren,

I like the cheap price of the LeoNTP. The only reason I prefer the Tm1000a is that it has an embedded web server, which 
lets me monitor the satellite constellation visibility. Otherwise, except for oven-controller time clocks, it seems 
obvious that the $2000+ GPS NTP servers are overpriced overkill :)

-mel via cell

> On Jun 20, 2019, at 8:31 AM, Warren Kumari <warren () kumari net> wrote:
>
> > On Thu, Jun 20, 2019 at 11:00 AM Mel Beckman <mel () beckman org> wrote:
> >
> > I use the $300 GPS-based TM1000A from TimeMachinesCorp.com. Gets Stratum-1 time from GPS satellites and distributes 
> > it. Usually I relay this through a handful of local time servers to spread out the load, but it can handle hundreds 
> > of queries per minute, so it’s reasonable to use as a primary source even in moderate-sized data centers.
> >
> > I’ve put in a ton of them, and in most installations I buy two for redundancy. The GPS antenna works from a window 
> > in most instances .
>
> I recently fell down the high precision time rabbithole, and now have
> 3 GPS units (a Truetime, a Symmetricom S250 and a LeoNTP), 3 Cesuim
> Primary Reference sources (an FTS4060, and 2 PRS-50s), and an
> assortment rubidium units.
>
> One of the "standard" solutions is one of the Microsemi (Symmetricom)
> SyncServer's, but these can be expensive -- I've been much happies
> with the LeoNTP (
> http://www.leobodnar.com/shop/index.php?main_page=product_info&products_id=272
> ) -- they are small, they are cheap, and they fast, they are "accurate
> enough", and they just work. I've got one on my desk, with a cheap
> (car) GPS antenna dangling out the window, and it syncs and runs
> happily. A friend of mine has stuffed one in an IP68 box and it's
> hanging happily on the side of a TV tower in the elements with no
> issues...
>
> I get mine from airspy.us - $349 + antenna.
>
> W
>
>
> > -mel beckman
> >
> > > On Jun 20, 2019, at 7:53 AM, David Bass <davidbass570 () gmail com> wrote:
> > >
> > > What are folks using these days for smaller organizations, that need to dole out time from an internal source?
>
>
>
> -- 
> I don't think the execution is relevant when it was obviously a bad
> idea in the first place.
> This is like putting rabid weasels in your pants, and later expressing
> regret at having chosen those particular rabid weasels and that pair
> of pants.
>   ---maf