I am a BYOD plan customer using a Sierra 250u with a CradlePoint ctr35. There are several towers in the area with varying 3G performance. I have a 2.4G 24dBi TP-link antenna that I point at the tower with the most reliable 3G speeds and get very strong and clean signals. I'm in a rental house and I'm not supposed to mount antennas, so mine is on a tripod in the attic, although the house is at the top of a hill, basically the highest point in the area.
In the opposite direction, there is a distant tower carrying WiMAX, that when aimed carefully, my antenna can catch a glimpse of a signal from. The best I've seen thus far is CINR 13 and -89 dBm. I've not been able to establish a WiMAX connection from my home (but have elsewhere, so I know my config is good).
Could an amplifier help get my numbers to a usable range? Should I just enjoy my tolerable 3G speeds until Millenicom is reselling Sprint LTE (which appears to be solidly available in my area)? Thank you for your insights!