[time-nuts] High end OCXO alternatives (or maybe an high perf Rb ?)
EWKehren at aol.com
EWKehren at aol.com
Thu Dec 8 10:00:32 EST 2011
10E-13 at 100 sec is a wide range. What about at 1 and 10 sec. and are
you talking about 3, 5, 9 E-13.
I personally have quite a few 10811's that brake the 1E-12 from 1 to 100
seconds my best OCXO is a Datum 1000 that is 3.5E-13 at 1 sec. and 4 at 10
and 7 at 100 sec. I control it with a FRK-H which has 7E-13 at 100 sec.
In this range short of a $ 15 000 Oscilloquartz the best is a HP 5065. They
all are below 1 E-12 some as low as 1E-13 at 100 sec. but the only way I
know how you know what you are getting is work with Corby Dawson.
In a message dated 12/7/2011 9:41:56 P.M. Eastern Standard Time,
mspencer12345 at yahoo.ca writes:
I'm contemplating starting a search on the "typical auction sites" for a
high end OCXO (or possibly a high end Rb) that would be suitable for
characterizing the performance of an FTS 1050. From time to time I've seen ADEV
figures of in the 10E-13 range (at a typical Tau of 100 seconds) when
comparing the FTS 1050 in question to one of my GPSDO's and one of my Rb's.
At this point I'm contemplating looking for:
Another FTS 1050
Various Datum / FTS stand alone OCXO's
An Oscilloquartz BVA OCXO
A Sulzer OCXO
Maybe an HP 5065
(I've already assembled a modest collection of half a dozen various
10811's and don't really want to buy any more at this point.)
Essentially I'm looking for something with a reasonable likely hood of
consistently having an ADEV in the 13's at Taus of 100 seconds or so.
I'm thinking that another FTS 1050 is probably the most likely alternative
but I'm trying to keep an open mind to other options. I'm not really
interested in a Cesium standard but if anyone has any other suggestions of
products I could look for (other than a H maser (: ) comments on or off list
would be appreciated.
Regards Mark Spencer
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