Thanks to all who replied. I thought that it was a counter artifact,
but I didn't know why.
Any suggestions for a reasonably priced good frequency counter that uses
the reciprocal method? I saw there were a couple TF830's on ebay, but
they were outside the U.S.
The HP 5340A looks like it might do the job, but I have heard that there
are repair issues if it fails.
Thanks.
Fred Bray
W6WAW
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