回复：买IPA4回国用，可以用卫星信号的。急需科普关于声频波段，3G,4G和LTE的关系

来源: 于 2012-11-24 10:34:09 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

Wiki is your friend in this case:

http://en.wikipedia.org/wiki/UMTS_frequency_bands

http://en.wikipedia.org/wiki/LTE_frequency_bands#Frequency_bands_and_channel_bandwidths

 

BTW, these are not '卫星信号', but radio frequency signal from ground towers.