There are 774,562 amateur radio licensed people in the US [1]. I would assume 10% of them are super active, so 77,456, and of those super active people, I'd say

There are 774,562 amateur radio licensed people in the US [1]. I would assume 10% of them are super active, so 77,456, and of those super active people, I'd say 1% of them are pushing the boundaries. So 1000? [1] http://www.arrl.org/fcc-license-counts http://www.arrl.org/fcc-license-counts