Question, does 15.103 of CFR47 provide any loophole to giving this a try? Especially the exemption concerning, "A digital device utilized exclusively in any transportation vehicle including motor vehicles and aircraft.".


I know there is exception for engineering development work in pursuit of product design (been there). I don't believe that extends to hobby endeavor.

That said, I think there's paranoia happening in this thread. Ultimately, a non-professional buyer of a kit to improve safety, won't be penalized for not knowing the ins and outs of FCC rules that are written in technical language to regulate business. You would no more be likely to face penalty than if your IPhone exhibited out of band leakage. FCC rules are written to manufacturers. This is distinctly different than the scenario of the FAA expectation that a pilot should know all the rules of airplane flying, for example.