I no longer recommend EVDO-Coverage.com because of recent negative experiences with the company. Among other problems, the owner has started charging highly inflated prices for his products. I will add more details soon but also see the EVDO Forums (link below) for lots of "horror stories" about EVDO-Coverage.com
A professionally developed site has come to my attention that provides objective information as well as reasonable prices for EVDO related products.
(Note: EVDO refers to a technology that allows users to connect to the Internet using cell phone signals. It allows true mobile computing since you can connect to the Internet from almost anywhere with EVDO and accessories, e.g., a booster antenna.)
I recommend the following web site for comprehensive information about EVDO:
EVDO Information (EVDOInfo.com)
To ask questions about EVDO technology, check out this web site (same owner as EVDOInfo.com):