IMO there is a tremendous amount of "clap" in the master call files that
date back before K8CC's effort this year. I use one from two years ago,
and am always astounded by the number of apparently busted versions of
calls that come up when I enter the one I've copied (yes, of course, I got
it right :)). This is not to blame the compiler, but the poor copying
habits of CW contesters.
What I'm suggesting is that it should be possible to use the number of hits
on each callsign to pare the size of the database and its individual cells
considerably without deleting that many real ones. Of course, there are a
lot of calls that get busted the same way more than once....
73, Pete N4ZR
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