So far, Google has already testing out its Project Loon Wi-Fi balloons in New Zealand, and hence it is not surprising at all to see that tests are also been conducted secretly right there and then in their very own country. So far, Google has picked up permission from the US Federal Communications Commission (FCC) in order to test out its Project Loon balloons in the northern Nevada desert.
In such tests, Google too, could be making an assessment as to whether it is able to tap into licensed radio spectrum to broadcast Wi-Fi. At this point in time, Project Loon has made use of the unlicensed 2.4GHz band for its Wi-Fi testing, where they are now also testing out a couple of radio spectrum types as depicted in the FCC filings, citing a broad class signal which could point to the possibility of 4G LTE.