Wireless Communications Association International
WiMAX Forum
Cellular Telecommunications Industry Association
Rural Cellular Association
IEEE
Personal Communications Industry Association
International Telecommunications Union
Association of Federal Communications Commission Consulting Engineers (AFCCE)
National Telecommunications Cooperative Association - the Voice of Rural Telecommunications
Federal Communications Commission
A complete copy of the Code of Federal Regulations including FCC rules in part 47.

Publications:

RCR
Wireless Week
Wireless Review
Mobile Radio Technology
Mission Critical Communications
Radio Resource International
Wireless Design On Line