High-frequency microwave transmission has been the standard mode of terrestrial communication used by telephone companies and broadcasters (FM) for many years. Microwave signals are transmitted by highly directional dish-shaped antennae in both terrestrial and satellite communication. Microwave transmissions can be modulated to carry both analogue and digital signals for voice, video, or data communication. Instructional television fixed service (ITFS) uses microwave transmission for narrowcasting.

Microwave resources (external links)

• Brian J Catlin, Wireless Cable Television—Frequently Asked Questions available at: http://www.dimensional.com/~bearhntr/wireless-cable.html
  Permission to link granted.

• Mike Jensen, A Guide to Improving Internet Access in Africa with Wireless Technologies.
  • "Fixed Microwave Multi-Channel Trunk Carrier Services." Available at: http://www.idrc.ca/acacia/studies/ir-jens3.htm. (Scroll down to find section on fixed microwave.)

  • "Microwave Data Systems." Available at: http://www.idrc.ca/acacia/studies/ir-jens8.htm Permission to link granted.