In your dreams. There was a very nice HP Cs there a few years ago, but it had a properety tag that I recognized. I knew that unit had a known bad Cs tube, as I seen it at a company surplus sale a month before, but that didn't stop the guy hawking it as "working" for well over $5K.
Caveat Emptor!! -John ============== > Tom > That is one thing I noticed even without the CS the system is very stable > with the Xtal. > My comment was tagging on to a previous one and I couldn't resist the fact > that I get might old stuff. > Good comment on the standard. Indeed I run my 5065 every month or so for a > day or two insuring its stable and no problems have or are cropping up. > My 5061 came from the Naval observatory. I just know the next hamfest or > MIT > flea I will find a new tube for it for $10 or 20. Not to likely. > Regards > > On Fri, Jan 14, 2011 at 1:01 AM, Tom Van Baak <t...@leapsecond.com> wrote: > >> Hi Tom been quite a while hope you are well. >>> The never run out comments, not from me. Look at the >>> previous thread I tagged onto. My humor is that most of >>> the CS tubes we get are very long in the tooth usually >>> way past whatever anyone would say they are good for. >>> >> >> That is so true. It always amazes to pick up a 30 year old >> 5061A and find that it still works. Sometimes the reason is >> that it is already on its 2nd or 3rd replacement tube before >> it went to surplus. In which case you're happy for years. >> Other times it may be that the 5061A was used only very >> intermittently and the tube is the low S/N original. >> >> A real gem would be one that was kept in cs-off mode except >> for a few hours once a month to keep the OCXO within some >> loose cal lab spec. Even after decades it would be as good >> as new. >> >> For many frequency applications there is no reason to run >> in full cs-locked mode. This is also true if you need good >> short-term stability. The free-running OCXO in most Cs (and >> GPSDO for that matter) are more stable short-term when the >> loop is open. >> >> >> /tvb >> >> >> _______________________________________________ >> 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. > > _______________________________________________ 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.