Mimosa Networks' petition asking the FCC to open the 10 GHz band for shared and lightly licensed use drew numerous negative comments from the amateur radio community, which along with federal and non-federal radiolocation services, constitute the band's current users. Brian Hinman, Mimosa's founder and CEO, acknowledged in a blog post that the American Radio Relay League characterized the company's petition as "fatally flawed" and that many ham radio operators are concerned about interference that might be posed by mobile broadband in the 10 GHz band.
Fighting back, Hinman wrote: "ARRL members represent just 0.05% of the US population, and yet many of them seem unwilling to give any ground to the possibility of sharing the spectrum so that the 30 percent of Americans without broadband might gain affordable Internet access. It's especially frustrating to see this hoarding mentality when sharing the band doesn't jeopardize their hobby activities and costs them so little." He ended by imploring the FCC to issue a Notice of Proposed Rulemaking regarding Mimosa's 10 GHz proposal. For more, see this blog post.