I came across this recently, as a ham, and now a professional user in the nearby affected band, I totally agree with the position. http://sbe.org/sections/documents/FNPRM_AM_Improvement_13-249_20160321.pdf It affects us too, the compost heap of part 15 noise from approved, and supposedly approved devices is deafening. -- K1FZY (WA4TPW) SK 9/29/37-4/13/15