MV89 may not be the best, I have better, but specs say 2 E-12 for 1 second and tests have shown they consistently brake the 1 E-12 barrier at 1 second. The reason I mention it is it's cost. With unlimited funds many things are possible but my challenge is lowest cost. That is why I started this probably longest discussion when I pointed out the ridiculously low price of the FE 5680A. The MV89 fits in the same category. It's price / performance is unsurpassed. Right now work is on hold because I will not touch the unit on aging test, but a second one is on order. I have the tendency to squeeze 10 pounds of shxx in a one pound box and this time not different. I have selected the enclosure and have designed the thermal portion, goal is in stage one to combine a MV89 with an analog filter with the 5680 and match through AV measurements. Second stage is combining the unit with a Shera controller to a GPS. I plan on documenting the steps and share with the list. It will be a slow process since metal work is involved. Bert Kehren In a message dated 1/18/2012 11:48:43 P.M. Eastern Standard Time, albertson.ch...@gmail.com writes:
On Tue, Jan 17, 2012 at 8:13 AM, <ewkeh...@aol.com> wrote: > After eight weeks of monitoring to 1 E-12, I still se no aging. Waiting for > a change so I can do other tests. One thing I clearly se is a 4 Hz filter > response changing the output by +- 3 E-11. It may be more, will have to > find a way to check it more accurately, because of limited response time. I > for one will fix that problem with a Morion MV 89 and a 100 Hz analog filter. > New Morion's are available for less than $ 30 the ones I bought seem new. > That's also where I got my 5680A Is the MV89 the best OCXO to use as a reference? I notice there is a place selling them for $19.99 buy it now price otis the $30 deal better? I want to get setup for frequency stability measurements. I have a t-bolt but being conservative (when it comes to engineering) I'd like a second non-related standard and a good ocxo should work for that over medium term tau. (I think)I don't know how the various $20 to $30 OCXOs compare. And I don't yet have means to compare them. Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.