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.
