Ignacio I think you will find that Time-nuts agree about the CS and RB usage. RB is cleaner for multiplying. At least thats my read from various time-nuts threads over the years. Regards Paul WB8TSL
On Wed, Nov 5, 2014 at 12:53 PM, EB4APL <[email protected]> wrote: > Paul, > > You are right, NASA's Deep Space Network (DSN) used a pair of Sulzers in > their Frequency and Timing subsystem. At some time before 1972 they were > replaced by a HP 5061A, a HP 5065A, and a HP Xtal oscillator, probably a HP > 105B, the Sulzers remained in the rack several years but unpowered. > A curious thing that I remember is that the Cesium was used for the clock > and all the timing, but the Rubidium was used for frequency reference for a > lot of equipment, mainly for multiplying up to microwaves for the > transmitters and receivers. When I asked why, I was told that they were > more phase clean for this application. > Later an Hydrogen Maser replaced the Cesium as the primary reference and > the crystal references were removed. > The MSFN used in the Apollo program used a different Frequency and Timing > Subsystem. > > Regards, > Ignacio EB4APL > > > On 05/11/2014 a las 15:27, paul swed wrote: > >> To a earlier comment I believe the NASA racks used Sulzers. Reason my 2 X >> are NASA and still work just fine. :-) >> Regards >> Paul >> WB8TSL >> >> On Tue, Nov 4, 2014 at 9:33 PM, Bob Camp <[email protected]> wrote: >> >> Hi >>> >>> Yup I’ve seen that seller before. I’ve wondered a lot what they are up >>> to. >>> Everything they sell is roughly 10X above the going rate. Most of it has >>> “buy it now” as an option. >>> >>> If you need the manual, offer the guy the $25 that it’s worth and see >>> what >>> happens. He may accept. Stranger things have happened. I’d only start the >>> process on something I REALY needed. Life is to short to play silly games >>> with some of these people. >>> >>> Usual disclaimer - never bought from the guy, don’t know anything about >>> him, he may be a prince, he may have ties to the Society of Rome …I have >>> no >>> idea. >>> >>> Bob >>> >>> On Nov 4, 2014, at 9:27 PM, EB4APL <[email protected]> wrote: >>>> >>>> Hi Adrian, >>>> >>>> I found one at ebay, item #251687322849 but the crazy seller wants $249 >>>> >>> for it. All his manuals and books are tagged with so exorbitant prices >>> which is a shame because its commercial value is nil. >>> >>>> Regards, >>>> Ignacio >>>> >>>> >>>> >>>> On 04/11/2014 a las 16:34, Adrian wrote: >>>> >>>>> I got a nice old Varian R-20 rubidium frequency standard that would be >>>>> nice to get working. >>>>> To begin with, there is at least a problem with the voltage regulator >>>>> circuit. >>>>> >>>>> Does anyone have a manual? I couldn't locate anything on the web. >>>>> >>>>> Regards, >>>>> Adrian >>>>> _______________________________________________ >>>>> 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. >> >> > _______________________________________________ > 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.
