G8KBV wrote: > Wonder if this will get posed, or returned to me.. > > Hi... > > Been lurking for a while. > > Also, been messing about trying to get a local (to me) GPS > Disciplined NTP server working, based on David Taylor's work > with FreeBSD, I think I have one of those configured OK, but > I've got other issues with FreeBSD on that machine that sort > of prevent me using it for unattended "appliance" use. It > keeps generating system emails for the Root user, and I can't > find out why! Other than its something about recovered editor > files? >
A "Free BSD" group might be a better place to ask. When you ask, you should probably include the text of one of these e-mails. > So... I'm about to try a couple of Windows "solutions" > (opportunities) One the "Tardis" program, that would appear > to be able to take PPS based GPS signals, and act as a server. > Have to say, if it works, that would be a good solution for > some other interested parties (near zero config!) The author > of that app seems to think it should work (they would I > guess?) Plus, I know my way around most of Windoze, unlike > my knowledge of Linuz/BSD or whatever, that just slows me down > to the point of frustration. No one in the (local to me) LUG > is interested in any of this sort of thing sadly. > > (& just why is it that about all 'nix documentation and help > files, are written almost exclusively to obfuscate the needed > information?) > > Also the Meinberg NTP software (not looked at in detail yet) > Both of them (independently while I play with them) will each > live on a dedicated PC for now, but ultimately one or the > other would need to co-exist on the same PC with the > monitoring program (Faros) that needs the time stamps. > Pointing it's NTP client routines at LocalHost? Low single > figure mS jitter is OK, sub uS accuracy is just not needed. > The "Meinberg NTP software" is standard NTPD with a "Windows installer"! If you are really good with Windows you might be able to install an X86 version of NTPD on a Windows system without Meinberg. Most people take the easy way out: Meinberg! > However, while involved in something else, this came to my > attention.... > > http://bifferos.bizhat.com/ > > Now, I realise the clock speed is not that quick by modern > standards, but could that have enough "grunt" to work as a > GPSDNTP server for a small low traffic LAN?.. > > OK, I've managed (I think, as earlier) to get an older version > of FreeBSD to run for this sort of thing (on a 500MHz P3 > machine) But, just how cut down can it go, with just enough > left to boot and do the NTP task, or is the Kernel BifferOS > uses capable of half decent NPT serving tasks as it is? It > appears to use a version of the same code others are using in > the WRTG routers for other purposes. > > Or, has anyone done similar with "re-purposed" Router hardware > for example (Linksys, Sweex, etc) I am aware of someone > selling (too rich for me!) a GPSDNTP server based on a "Slug" > (eBay 180384450442) using a USB connected GPS. > > My ultimate goal? > > To get Faros (HF Beacon monitoring program, runs on Windows, > only.) A GPSDNTP source, HF Receiver control app (my own > code) and the resulting web based status page (or website > updater) all living on the same PC. I may have a 1GHz P3 > available, if I can get replacement RAM for it. With Win2k > already resident. And a couple of Garmin GPS16LVS devices, > verified working with 1PPS output. > > Now, if Alex would integrate GPS timekeeping within Faros, all > this would not be needed, but he has his own reasons it seems > for not doing so. As a result, it needs a 24/7 'net > connection, or access to some other NTP time source. My > ISP's servers are somewhat less than reliable at times, > likewise access to others due to unpredictable and huge WAN > network latencies from time to time. > > I also can't help wondering if any of the modern single chip > microcontrollers, some of which have available IP stacks, > could do the GPSDNTP thing in raw machine (or compiled) code. > But try as I might, I can find no reference to anyone trying > such a thing. > > I am of course trying to keep the electric bill down, running > 3 PC's and a radio or two 24/7 is somewhat noticeable to the > wallet these days, and it is not getting any easier!... > > Then there is the chore of just finding the time to research > and mess with all this stuff... > > Enough waffle from me... > > Regards to All.. > > Dave Baxter. > G0WBX. > _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
