Here's what they say; satellite broadband is not supported... Sorry.
AT&T 3G MicroCell Online Activation Process for Business Accounts ________________________________________ Last Updated: 05/02/2011 Troubleshooting Steps
SUBJECT: AT&T 3G MicroCell Registration Process for Business Accounts Activate an AT&T 3G MicroCell on a CRU Account How to Register AT&T 3G MicroCell Set Up AT&T 3G MicroCell AT&T 3G MicroCell Online Activation Process for Business Accounts
FIX: Prerequisites • A postpaid monthly voice rate plan NOTE: Prepaid customers can use the service, provided they are on the Approved User List and have a 3G or 4G wireless device. • An AT&T 3G or 4G capable device and SIM NOTE: Older AT&T Wireless and Cingular SIM cards are not supported. • The device is able to receive Text Messages (SMS). • A broadband internet connection. Minimum download speeds of 1.5 Mbps and upload speeds of 256 Kbps recommended. Most broadband providers supported. Satellite Internet is not supported. • The AT&T 3G MicroCell must be used within the AT&T 3G MicroCell coverage area. o Verify coverage at att.com/3GMicroCell under Check Availability.