See the chart TVB produced to see the PRS10 hump in published data. http://www.leapsecond.com/museum/prs10/
> Have you observed the hump yourself or is it published data? If you made > the measure, what reference clock did you use? I have (at work, in another > department) a new PRS10, hope to get it back... > > On Thu, Aug 23, 2012 at 6:00 PM, Bill Dailey <[email protected]> wrote: > >> .... The PRS10 by SRS has serious shortcomings at short tau. I don't >> understand why but there is a huge hump in the adev. That's why I avoided >> one. >> >> Sent from my iPhone >> >> On Aug 23, 2012, at 10:42 AM, paul swed <[email protected]> wrote: >> >> > OK have been staying clear of the replies. >> > Thats a lot of money for a RB of who knows what age and no support. >> > Those are $25 value items you are taking all of the risks. And yes indeed >> > you can get RBs for $25 a bit low in the lamp life. But do rejuvenate >> > nicely. FRS class. >> > >> > Brand new ones I think from SRS are that cost, consume a fraction of the >> > power, great documentation, warranty, and modern control interfaces. >> > What on earth would shipping and customs be?? >> > Cute boat anchor though a real waste of anything. >> > Regards >> > Paul >> > WB8TSL >> > >> > On Thu, Aug 23, 2012 at 11:32 AM, Michael Perrett <[email protected] >> >wrote: >> > >> >> I have found Google translate does a pretty good job on translating >> manuals >> >> - and it is free >> >> Michael >> >> >> >> On Thu, Aug 23, 2012 at 6:40 AM, Richard Parrish <[email protected]> >> >> wrote: >> >> >> >>> The seller of the 'Russian' equipment said that the CCHB-74 frequency >> >>> standard is a rubidium unit. Manual is in Russian but he can translate >> >>> part >> >>> of the manual into English for an additional fee. >> >>> >> >>> Thanks, >> >>> Richard Parrish >> >>> Cal Center Inc >> >>> 1622 Griffith Ave >> >>> Terrell, Texas 75160-4905 >> >>> [email protected] >> >>> 214-577-3515 >> >>> >> >>> -----Original Message----- >> >>> From: [email protected] [mailto:[email protected]] >> On >> >>> Behalf Of David Kirkby >> >>> Sent: Thursday, August 23, 2012 3:18 AM >> >>> To: Discussion of precise time and frequency measurement >> >>> Subject: [time-nuts] Is this a cesium frequency standard? >> >>> >> >>> There's a seller on ebay by the name of >> >>> "electro-radio-device-high-precision", which have some odd things. >> >>> Some seem as if they would be 19th century items, but are sold as >> "new". >> >>> >> >>> >> >>> >> >> >> http://stores.ebay.co.uk/electro-radio-device-high-precision?_trksid=p4340.l >> >>> 2563 >> >>> >> >>> I suspect his stuff was desgned for the Russian military. Everything he >> >>> sells is described as >> >>> >> >>> "analog of Lutron, Advantest, Avtech, HP Agilent, NoiseCom, General >> >> Radio, >> >>> Boonton, Anritsu, Fluke and general Electric, but has the same or >> better >> >>> characteristics." >> >>> >> >>> I thought this one was interesting though >> >>> >> >>> >> >>> >> >> >> http://www.ebay.co.uk/itm/5MHz-1MHz-100kHz-Frequency-standard-CCHB-74-an-g-A >> >>> gilent-HP-/330758945645?pt=LH_DefaultDomain_0&hash=item4d02c4fb6d >> >>> >> >>> It has lots of knobs to twiddle, so it might be a cesium, though the >> >> specs >> >>> don't seem good enough for a cesium, with a relativa e error of >> >>> +/- 2 x 10^-11 at shipping. That seems more like a rubidium spec. >> >>> >> >>> He has some bizzare stuff, like a power meter which works to 53 GHz, >> but >> >>> has >> >>> banana plugs on it. I guess the sensor is connected to the banana >> plugs, >> >>> though he does not mention it needing an external sensor. >> >>> >> >>> >> >>> >> >> >> http://www.ebay.co.uk/itm/0-03GHz-53GHz-1mkWatt-10mWatt-Power-meter-M3-22-an >> >>> >> >>> >> >> >> -g-Agilent-HP-Marconi-GenRad-/230821610924?pt=LH_DefaultDomain_0&hash=item35 >> >>> be0a45ac >> >>> >> >>> Some of his stuff seems very over priced, like a 400-1200 MHz sig gen >> >> with >> >>> an error of 1% for $1580, but other things seem quite reasonable. >> >>> If you need a sig gen at 70 GHz, he has them. >> >>> >> >>> Anyway, its worth checking out his auctions, as he has some test >> >> equipment >> >>> which is very different from what one normally sees - and it some cases >> >> to >> >>> what one would want to see! >> >>> >> >>> Dave >> >>> >> >>> _______________________________________________ >> >>> 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. > _______________________________________________ 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.
