Not in Canada.

All you have to do is prove a certain output wattage, on a consistent basis; and you can sell it on the open market.

The minimum is not much, and then it is just a business licence for your area.

__________________
'Sir........, I don't like these numbers.'
'Then hire somebody that can change them!'
("`-/")_.-'"``-.,,
\. . `; -._( );, `)
(v_,)' _ )`-. \ ``'`
_.- _..-/ /((.'
((,.-' ((,/