Gentlemen. I am sure this has been asked before... I am looking to purchase a GPS receiver modulethat supplies a good/stable 1PPS outputwith as little (internally) generated jitter as possible. PCB-style is OK. It is to be usedfor GPS-locking a HP 105B in aseparate box. Miniaturization not necessary at all. Can someone suggest a suitable product(eBay ?) BR Ulf KylenfallSM6GXV

How about ebay item 251785217093 ? On 09/05/2017 20:52, Ulf Kylenfall via time-nuts wrote: > > Gentlemen. > I am sure this has been asked before... > I am looking to purchase a GPS receiver modulethat supplies a good/stable 1PPS outputwith as little (internally) generated jitter as possible. > PCB-style is OK. It is to be usedfor GPS-locking a HP 105B in aseparate box. > Miniaturization not necessary at all. > Can someone suggest a suitable product(eBay ?) > BR > Ulf KylenfallSM6GXV > > > > > > > > _______________________________________________ > 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. > -- Stephen Tompsett

On Tue, May 9, 2017, at 09:52 PM, Ulf Kylenfall via time-nuts wrote: > > Gentlemen. > I am sure this has been asked before... > I am looking to purchase a GPS receiver modulethat supplies a good/stable > 1PPS outputwith as little (internally) generated jitter as possible. How much jitter is tolerable? What's your budget? The u-blox NEO-M8T is cheap (a PCB-mounted version is available for USD $75, see [1]) and according to its brochure[2] it has +/-11ns jitter with an absolute accuracy of 21ns. That's pretty good. On that particular board, the PPS line is wired to an LED indicator light so some light soldering would be needed to run a wire off of that line to your HP 105B. Alternatively, the shop owner is happy to redesign the board in whatever wiring configuration you need if you're willing to buy 10 of the modified board. Keep in mind the connectors on the board are 1.25mm, so you'd need to be sure you have appropriate connectors, but those are cheap and readily available on eBay and the like. Cheers! -Pete [1] <http://www.csgshop.com/product.php?id_product=205> [2] <https://www.u-blox.com/sites/default/files/products/documents/NEO-LEA-M8T-FW3_ProductSummary_%28UBX-16000801%29.pdf>

Hi For the same money, you could get one of these: http://www.ebay.com/itm/152340314423?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT <http://www.ebay.com/itm/152340314423?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT> Then locking up another oscillator is just a simple phase locked loop. The gotcha is that none of the modules on the market actually have a “stable” 1 PPS. To get that you do a GPSDO. The GPS constellation it’s self is what creates the (short term) instability. If your OCXO closely follows the GPS signal, it will be all over the place. There is lots of information about this in the archives. Bob > On May 10, 2017, at 3:29 AM, Stephen Tompsett <stephen@tompsett.net> wrote: > > How about ebay item 251785217093 ? > > > > On 09/05/2017 20:52, Ulf Kylenfall via time-nuts wrote: >> >> Gentlemen. >> I am sure this has been asked before... >> I am looking to purchase a GPS receiver modulethat supplies a good/stable 1PPS outputwith as little (internally) generated jitter as possible. >> PCB-style is OK. It is to be usedfor GPS-locking a HP 105B in aseparate box. >> Miniaturization not necessary at all. >> Can someone suggest a suitable product(eBay ?) >> BR >> Ulf KylenfallSM6GXV >> >> >> >> >> >> >> >> _______________________________________________ >> 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. >> > > -- > Stephen Tompsett > > _______________________________________________ > 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.