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.
