Those are definitely cellular frequencies (LTE but also PCS, AWS and others) <a href="http://niviuk.free.fr/lte_band.php" rel="nofollow">http://niviuk.free.fr/lte_band.php</a>.
I noticed the EIRP they are talking about is 300mw in the Kennewick test which is extremely low but then they mention a 120km radius, that would only be possible using array antennas and the throughput would be extremely low (normal cell towers EIRP is 40 - 60W per sector). That indicates they are probably testing an IOT application.<p>Also, then say this:<p>"A limited number of channels would be used within the bands specified above, and applicant will change channels when necessary to avoid interference. Amazon will not operate on channels deployed by licensees in the public safety, aeronautical, or public coast radio services. In
addition, the company will monitor the operations of other licensees and users before commencing transmissions to avoid interference"<p>Which indicates that are thinking of a whitespace system which means they have no intention of trying to ride on incumbent wireless provider networks.<p>Alexa build me my own IoT wireless network :)