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

Michael Perrett mkperrett at gmail.com
Thu Aug 23 11:32:01 EDT 2012


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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