ORIGINAL: Sport_Pilot
If it must meet Part 15 then it cannot interfere on any frequency. So I don't see that it matters which frequency it is on, it cannot be allowed to transmitt any RF!
Just about everything electronic radiates RF. It is HARMFUL interference we are interested in.
And we are the Part 15 guys, they are Powells's buddies, they will get anything they want, as evidenced by the recent actions of the FCC.