[ntp:questions] Stratum 1 servers in pools?!?
Richard B. Gilbert
rgilbert88 at comcast.net
Fri Jun 19 01:10:26 UTC 2009
Dave Hart wrote:
> On Mon, Jun 15, 2009 at 11:26 PM, Richard B.
> Gilbert<rgilbert88 at comcast.net> wrote:
>> I wouldn't worry excessively about it! If there is a stratum one server
>> in the pool, it's there because the owner wanted it there.
>> What you should NOT do, is configure several of your machines to use it!
>> If you have ONE server querying that stratum 1 box, that server is a
>> stratum two server and can serve time to your local network.
> Using the pool on several machines is fine. What the pool folks do
> ask is that you don't find servers using the pool, then hardcode their
> name or IP address in your configuration. That is so people can leave
> the pool and not have the IP/name continue to get (at that point)
> unwanted NTP queries.
>> For that matter, you could set up your own stratum one server! All it
>> takes is a GPS Timing Receiver and a PC running Solaris or Linux and
>> NTPD. Net investment is $100-$300 for the timing receiver, cable,
> I don't think you can find a timing-specialized GPS receiver for that
> price. You can get a location-oriented GPS receiver with PPS, namely
> the Garmin GPS 18x LVC, in that price range. I spent $100 for mine
> modified by someone more competent with a soldering iron to have a
> PC-compatible DB-9 serial connector and a USB cable for power. The
> receiver itself can be had for under $60 in the US, but then you have
> to supply the DB-9 hood, USB cable (or other 5V supply), and time to
> wire it up.
I spent something like $300 US several years ago on a Motorola Oncore
(sp?) M12+T and have been using it since. It has worked quite well.
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