As in all measurements, there's a point beyond which greater accuracy is a waste of time.
Knowing what accuracy is needed is the mark of the experienced technician or engineer. Certainly, the few Hz accuracy easily achieved by zero beating WWV is more than enough for HF use, even for most commercial applications, and few counters have the time base stability to hold even that calibration for very long. Ron AC7AC _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com