i involve to know this, do you know any website wherein i can return with brief answer pls do drop a flash for me.
Answers:
In the US or somewhere else?
In the US these are covered underneath FCC rules
http://www.fcc.gov/
here is a brief overvue of the credentials process.
http://www.timcoengr.com/download/fcc/fc...
Don't know if explicitly what you considered necessary but that's where on earth I would start!