On Mon, 16 Aug 2004 20:47:42 GMT, "Phil Kane"
wrote:

The "WN" and "KN" were the Novice parallel for the "W" and "K" Tech
calls in the era when one could hold both. When the "K"/"KN" calls
ran out, they decided to go to the "WA" calls, and "WV" (V for noVice)
became the parallel.

I know quite a few WA7's who had those calls issued as novice calls.
The FCC started issuing WA7's in the very early 1970's when the KN7
and WN7 prefixes were used up. One of them a friend of mine had a KN7
call, moved to Sydney, Australia for 2 years, came back, and was
issued a WA7 call.