Thank you for contacting the Intel Embedded Community.
The information that may help you is stated in the FCC Radio Frequency Interference Requirements sections of the Intel(R) WiMAX/WiFi Link 5350 and Intel(R) WiMAX/WiFi Link 5150 Adapters Regulatory Information, also at the Different Wi-Fi Protocols and Data Rates for Network and I/O article.
Also, please review the Regulatory Documents for Intel® WiFi Link 5300/5100, 802.11n Connectivity Recommended Settings for Wireless, Improve Your 802.11n Wireless Performance for Network and I/O, Advanced Wi-Fi Adapter Settings for Network and I/O, and as a reference Wi-Fi Alliance web site.
Please let us know if this information is useful to you.
Maybe I should have stated it more clearly... I'm intending to use it outside of it's normal operating parameters. When I said "WiMAX-like network, but at 5091-5150 MHz band (federally protected spectrum)" I should have stated that the team has an experimental FCC license in order to operate devices in that band of protected spectrum.
Given the right antenna, can the radio in the device be physically made to operate reliably in that band? I want to see what devices might be available for testing.