Can a person determine the Bands used on a given cell tower,

[Dean Sanders]

and if so, is a homebrew RF preamplifier or booster possible? I see commercial boosters are not cheap, and I assume it's because of the multi band problem. Any advice or information will be greatly appreciated. Thanks
Dean S.

 

[NMNeil]

You could start here and find out who is licensed, then use the license info to find their allocated frequency.

http://wireless2.fcc.gov/UlsApp/AsrSearch/asrRegistrationSearch.jsp