The telecommunications industry is quite complex and subject to rapid change.  A series of materials offering general information on how cellular telephone technology works, electromagnetic fields, and health and safety considerations are provided for your reference. 

For more specific information, feel free to visit the industry links provided below.

general information
About the Wireless Industry
Evolution of the Cellular Network
Limitations of Cellular Services
The EMF Spectrum
Natural Sources of EMF
Health and Safety: Safety Code 6
Who is Involved in the Process

industry links

Canadian Wireless Telecommunications Association CWTA Wireless Antenna Towers Siting in Canada
http://www.cwta.ca/CWTASite/english/towers.html

Industry Canada – Spectrum Management and Telecommunications
http://strategis.ic.gc.ca/antenna

Industry Canada: Antenna Towers in Your Community: Frequently Asked Questions (CPC-2-0-03 - Radiocommunication and Broadcasting Antenna Systems)
http://www.ic.gc.ca/epic/site/smt-gst.nsf/en/sf08788e.html

Health Canada and Industry Canada FAQ on Radio Frequency Fields – Frequently Asked Questions
http://strategis.ic.gc.ca/epic/site/smt-gst.nsf/en/sf08792e.html

Health Canada; Safety Code 6 – Limits of Human Exposure to Radiofrequency Electromagnetic Fields in the Frequency Range from 3 kHz to 300 GHz.
http://www.hc-sc.gc.ca/ewh-semt/pubs/radiation/99ehd-dhm237/index_e.html

Health Canada: Information about base stations
http://www.hc-sc.gc.ca/ewh-semt/radiation/cons/stations/index_e.html

Wireless Communications and Health
http://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf09591.html