On Thu, Jul 7, 2011 at 12:12 AM, Terje Mathisen <"terje.mathisen at tmsw.no"@ntp.org> wrote: > Chris Albertson wrote:
> Using Garmin 18 and SURE for two of those will leave you nearly $900 for the > last clock, so that is obviously doable. :-) > > If you pick up a Motorola Oncore UT+ as the last clock you'll have a proven > extremely good reference (15-25 ns RMS offset from true UTC?) and still end > up with maybe $800 in your pocket. If this is a hobby server running in your house then you can get buy with just some bare PCBs on a table. But these are critical business servers so I assume the OP runs a business and needs to follow the electrical code and can let an antenna lead go out an open window. The biggest part of the budget wil be the roof mounted antenna. For that you need a mast that is grounded to a ground rod. You need some kind of lightening protection on the antenna lead and then to lead the antenna coax in the lab. Getting just a legal up to code antenna up for $300 is a stretch if you hire the work done. There is a LOT more to setting up a GPS in a commercial building then just buying the GPS. It gets expensive quickly once you start placing things on a roof and pulling wires between floors Chris Albertson Redondo Beach, California _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
