NTP Stratum 1 on a Mac?

[ChrisA]

I'm going to set up a stratum one NTP server. The goal is sub-microsecond level. I'll be using a Motorola UT+ GPS unit. It's an old unit but 10X better than I need for this task. (Need precision time to support various science and engineering tasks, not just for the on-screen clock display)

I'd like to use an older Mac G4 Mini for this server. NTP hardly uses any CPU time so the G4 is fast enough but one problem"

How to connect the 1 pulse per second signal from the GPS to the Mac?

Does Mac OS X have the kernel timing API that NTP uses.

Yes I know a one in a million shoot, you have to have set up a server to know the answers.

Looks like I'll be using PC hardware and either Linux or BSD

 

[ajile]

Hello! I would also be interested in what it takes to get a stratum-1 server up on Mac OS X Snow Leopard.

From some research I've done, it looks like FreeBSD is "the nuts" when it comes to stratum-1 NTP servers using GPS time and GPS PPS...although I haven't found any direct comparisons yet.

Did you end up getting anywhere with this project?