[time-nuts] recommendations for master reference
I am currently using both Trimble Thunderbolt and LPRO-101 Rb references. What I really would like to have is a rack-mountable unit that is a GPS-disciplined Rb reference and a built-in NTP server. (Yes, this is for my home. We are time-nuts, aren't we?) I could roll-my-own system for disciplining the Rb from the 1pps of the Thunderbolt, and produce NTP broadcasts on the LAN but, frankly, I am going to be happier if I find a unit where someone has already done the heavy lifting AND done a better job with the filtering to reduce GPS-induced error in the Rb output. So, if you wanted a rack-mountable reference with multiple 10MHz outputs that is a GPS disciplined Rb and an NTP server, what would you look for on the used market? Oh, I suppose I would go for a Cs reference if I could find one at the right price. I'm not picky. :-) -- Brian Lloyd, WB6RQN/J79BPL 706 Flightline Drive Spring Branch, TX 78070 br...@lloyd.com +1.916.877.5067 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] recommendations for master reference
On 12/12/13 6:31 AM, Brian Lloyd wrote: I am currently using both Trimble Thunderbolt and LPRO-101 Rb references. What I really would like to have is a rack-mountable unit that is a GPS-disciplined Rb reference and a built-in NTP server. (Yes, this is for my home. We are time-nuts, aren't we?) I could roll-my-own system for disciplining the Rb from the 1pps of the Thunderbolt, and produce NTP broadcasts on the LAN but, frankly, I am going to be happier if I find a unit where someone has already done the heavy lifting AND done a better job with the filtering to reduce GPS-induced error in the Rb output. So, if you wanted a rack-mountable reference with multiple 10MHz outputs that is a GPS disciplined Rb and an NTP server, what would you look for on the used market? TrueTime/Symmetricom made and still makes a whole line of just this sort of thing in a 1 U rack mount enclosure. Something like an XL-DC with the right plug in boards, for instance. The particular plug-in I've used in the past is the one with the quiet quartz oscillator with low phase noise (since I'm usually multiplying up to microwave frequencies), but they have plenty of other options. They also have NTP servers in the same box, IRIG, etc. Oh, I suppose I would go for a Cs reference if I could find one at the right price. I'm not picky. :-) ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] recommendations for master reference
OK will add my 10 cents. Half the fun is building your homebrew $1.98 ref with NTP. Simply toss it on a 2 or 3 ru rack panel. The servers these days are itty bitty. Now for serious class follow Jims guidance. Regards Paul On Thu, Dec 12, 2013 at 10:07 AM, Jim Lux jim...@earthlink.net wrote: On 12/12/13 6:31 AM, Brian Lloyd wrote: I am currently using both Trimble Thunderbolt and LPRO-101 Rb references. What I really would like to have is a rack-mountable unit that is a GPS-disciplined Rb reference and a built-in NTP server. (Yes, this is for my home. We are time-nuts, aren't we?) I could roll-my-own system for disciplining the Rb from the 1pps of the Thunderbolt, and produce NTP broadcasts on the LAN but, frankly, I am going to be happier if I find a unit where someone has already done the heavy lifting AND done a better job with the filtering to reduce GPS-induced error in the Rb output. So, if you wanted a rack-mountable reference with multiple 10MHz outputs that is a GPS disciplined Rb and an NTP server, what would you look for on the used market? TrueTime/Symmetricom made and still makes a whole line of just this sort of thing in a 1 U rack mount enclosure. Something like an XL-DC with the right plug in boards, for instance. The particular plug-in I've used in the past is the one with the quiet quartz oscillator with low phase noise (since I'm usually multiplying up to microwave frequencies), but they have plenty of other options. They also have NTP servers in the same box, IRIG, etc. Oh, I suppose I would go for a Cs reference if I could find one at the right price. I'm not picky. :-) ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/ mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
