"These devices are subject to FCC part 18 rules but there appears to be a total disregard for the FCC rules. These electronic ballasts are manufactured in China and may have little "FCC" stickers on them but there is no evidence of any testing for compliance having been done."
Lumatek is a major brand that can be found in most grow shops. If it's widely known that they're not in compliance and have been labelled with fake FCC stickers, why are they not being seized at the border?
Why should any US manufacturer pay for compliance testing and the higher costs of US labor, when they could just have their product made in China and shipped back here with fake stickers?
Ham Radio operators have a long history of tracking down radio interference sources and one of the hardest cases lately has been when the source is a grow operation down the road.
"These devices are subject to FCC part 18 rules but there appears to be a total disregard for the FCC rules. These electronic ballasts are manufactured in China and may have little "FCC" stickers on them but there is no evidence of any testing for compliance having been done."
Locating RF interference: http://arrl.org/files/file/RFI/Thompson%20Noise.pdf