There is still a lot of activity in this area, at least from a Latin American perspective.
Be it harmonics or legitimate activity.

See the following page for a sample of what is available in 'the basement':

http://www.sover.net/~hackmohr/sw.htm

Steve
Holland, MI
Drake R7, R8 and R8B

http://www.iserv.net/~n8kdv/dxpage.htm