''other forms of propagated signals (e.g. carrier waves, infrared signals, digital signals, etc.).''
''The AWS band uses 1700 MHz and 2100 MHz frequencies, which make it an ideal spectrum for urban deployments. The lower the frequency, the further radio waves propagate, so while 700 MHz was perfect for Verizon’s coverage network, you can expect Verizon to be more selective about where it builds the second network. It will likely target cities and other high-traffic areas and it may even USE AWS for its first indoor and outdoor small cells.''
http://gigaom.com/2013/03/13/verizon-will-start-building-lte-network-no-2-this-year/
e