said by jandrfas:
Eureka! I did just as you suggested and got full speeds.
I would try a 4 foot or 6 foot usb extender cable and play with locations. You can also try what others have said here, use the cradlepoint as a stand-alone router, while feeding the wifi from another device away from it.
I would also drop a chat/message to cradlepoint and see if they have run across this... since the changing the channel number didn't do much. Who knows they might have some tricks as well.
Glad you narrowed it down! Now get sprint/clear to build out more of the middle of the country so we can enjoy those speeds as well