[Test-Equipment] Frequency accuracy

Tue, 24 Sep 2002 17:39:36 -0400

Remember, back then we had to use counters that took a long time for a
single measurement, especially of the precision that you are talking about.
There were no such things as reciprocal frequency counters at the time.
Additionally, as I recall, the 60 KHz transmissions were modulated with
embedded time and other data, and is, like now, far from a steady carrier. I
have had several private emails with other contributors to this thread, at
their choice, and actually wish the whole group could have benefited or
contributed to them. This reflector is not a real busy one, so this
discussion, at least to me, has been really interesting. This is a neat
topic, and I hope the thread continues. Francesco earlier mentioned that the
statistics associated with the measurement cannot necessarily be considered
Stochastic, or time invariant. Of course he was referring to the atmospheric
phenomenon. At the time, my argument for a statistical measurement was due
mainly to test equipment variances as a function of time. I am still willing
to listen and learn, as this is a fascinating phenomenon for me. Regards -
Mike

Mike B. Feher, N4FS
89 Arnold Blvd.
Howell NJ, 07731
(732) 901-9193

----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Sent: Tuesday, September 24, 2002 5:09 PM
Subject: [Test-Equipment] Frequency accuracy

> I wonder if any of you have ever received the 60KHz from WWVB and plotted
> it against WWV at 5 ,10, or 15MHz. It should give you a new idea of
> propagation errors and frequency comparison accuracies. Do you remember
how
> we used to plot a comparison with WWVB and the House Standard and hope
that
> we were accurate to 10 to the -10th?????
> n5mqa
>
>
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