[time-nuts] Is this a cesium frequency standard?

paul swed paulswedb at gmail.com
Thu Aug 23 11:42:25 EDT 2012


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 <mkperrett at gmail.com>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 <calcntr at swbell.net>
> 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
> > calcntr at swbell.net
> > 214-577-3515
> >
> > -----Original Message-----
> > From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] 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
> >
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> >
> >
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