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.
