Paul Day wrote:
On Wed, 07 Oct 2009 08:37:43 Bill Baka may have written:
I have been playing around 15 to about 21 MHz for the most part and get
some signals in strange places that are not to my knowledge part of the
US allocated spectrum. Maybe some countries do not abide by our F.C.C.?
I think you'll find very few countries other than the USA abide by your FCC. 
CHeers,
Paul
FCC rules conform to ITU regulations for the most part.