Ok.. for all to know from my personal experience. YES, a microcell will work with Hughesnet with LIMITED use. I was able to register and activate my microcell on the Hughesnet system for over a year. I needed it strictly for sending and receiving text and MMS messages. As for voice calls, NO! There is a 2-3 second delay on calls. But it gave me my full 5 bars of service on my phone and was to do everything but send/recv calls.
I recently switched to Viasat formerly known as wildblue for a faster service. But the down side is that my microcell did not work with that type of system. I could never get it to activiate. But it was a good trade off for my faster internet. I'll just get a Wilson dual band pro booster for my phone now.