Thanks, the price is very high for me as well. The starting price is almost an order of magnitude more than I paid for my FTS 1050. I won't be bidding.
--- On Thu, 12/8/11, Azelio Boriani <[email protected]> wrote: > From: Azelio Boriani <[email protected]> > Subject: Re: [time-nuts] High end OCXO alternatives (or maybe an high perf Rb > ?) > To: "Discussion of precise time and frequency measurement" > <[email protected]> > Received: Thursday, December 8, 2011, 9:17 AM > The price is very high (for me) but > on the usual auction site again you can > find an FTS1050 too: 150714877944 > > On Thu, Dec 8, 2011 at 2:34 PM, John Ackermann N8UR <[email protected]> > wrote: > > > Hi Mark -- > > > > This may be challenging. A good FTS-1050 can be > very, very good indeed. > > I have one that seems to have a wideband noise > floor problem (about 20dB > > worse than it should be) but has stability below 3e12 > out to 200K seconds > > -- it's just quite amazing. > > > > Plots attached, with an HP 5065A Rb as the > reference. The short term > > stability (below about 100 seconds) is limited by the > reference, and that's > > the hard part; a maser is about the only thing that > can give you low short > > term and low term stability. > > > > Lacking a maser, the best strategy may be to use two > references for > > different tau ranges -- a very good OCXO for short > term, and then an Rb for > > long term. Combine the plots and you'll probably > see the point where the > > lines intersect. > > > > John > > ---- > > > > On 12/7/2011 9:41 PM, Mark Spencer wrote: > > > >> Greetings: > >> > >> I'm contemplating starting a search on the > "typical auction sites" for a > >> high end OCXO (or possibly a high end Rb) that > would be suitable for > >> characterizing the performance of an FTS > 1050. From time to time I've > >> seen ADEV figures of in the 10E-13 range (at a > typical Tau of 100 seconds) > >> when comparing the FTS 1050 in question to one of > my GPSDO's and one of my > >> Rb's. > >> > >> At this point I'm contemplating looking for: > >> > >> Another FTS 1050 > >> Various Datum / FTS stand alone OCXO's > >> An Oscilloquartz BVA OCXO > >> A Sulzer OCXO > >> Maybe an HP 5065 > >> > >> (I've already assembled a modest collection of > half a dozen various > >> 10811's and don't really want to buy any more at > this point.) > >> > >> Essentially I'm looking for something with a > reasonable likely hood of > >> consistently having an ADEV in the 13's at Taus of > 100 seconds or so. > >> I'm thinking that another FTS 1050 is probably the > most likely > >> alternative but I'm trying to keep an open mind to > other options. I'm not > >> really interested in a Cesium standard but if > anyone has any other > >> suggestions of products I could look for (other > than a H maser (: ) > >> comments on or off list would be > appreciated. > >> > >> > >> Regards Mark Spencer > >> > >> > >> > >> > >> > >> _______________________________________________ > >> time-nuts mailing list -- [email protected] > >> To unsubscribe, go to > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >> and follow the instructions there. > >> > > > > > > > > > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
