As I understand a company can perform self certification. There seems to be no independent audit system. Thus if the company says it meets specs, then it meets specs.
Bob, K4TAX Sent from my iPhone > On Oct 21, 2017, at 3:28 PM, Kevin Cozens <ke...@ve3syb.ca> wrote: > >> On 2017-10-21 10:48 AM, w4sc wrote: >> LED bulbs are required to meet FCC Part 15 FCC, Class B regulations. > > I found out first hand a number of years ago that a device that has type > approval in the US can still spew a lot of unwanted RF. Better to have some > approval process but it would be better if the specs were much more strict. > > I worked for a company that had a pair of transceiver devices used in > real-time data collection. The devices had FCC type approval but failed to > pass the UK type approval process. I couldn't believe what I saw when I put > the devices on a spectrum analyzer. The main oscillators operating in the > 27MHz and 49MHz ranges had harmonics galore up in to the gigahertz range. It > made me wonder if the original designer ever checked the devices with an SA. > I was able to fix the problem for both devices with trivial changes and the > devices then passed the UK approval process. > > The FCC (or was it ARRL) is doing a study/survey about the increasing noise > floor in the RF spectrum. It no longer surprises me that the floor is rising > when the US approval process is so lax. > > -- > Cheers! > > Kevin. > > http://www.ve3syb.ca/ |"Nerds make the shiny things that distract > Owner of Elecraft K2 #2172 | the mouth-breathers, and that's why we're > | powerful!" > #include <disclaimer/favourite> | --Chris Hardwick > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcg...@blomand.net > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
