On Tue,11/25/2014 3:22 PM, Don Wilhelm wrote:
While a single point star grounding system may be best from an EMC point of view,
The meaning of a single point star grounding system is badly misunderstood. Likewise, the difference between grounding and bonding is badly misunderstood. A connection to earth is NOT part of a solution to RFI/EMC issues. Proper BONDING IS. And the method I've shown in the tutorial IS best for EMC and for lightning. Remember -- EMC goes from DC To daylight! About ten years ago, I consulted to a mic manufacturer about RFI from cell phones to audio systems in meeting rooms of the US House of Representatives. The primary coupling mechanism was a Pin One Problem in the FET follower line driver for the electret mics. The cell phones were running 1W or less, pulse modulated, in the ranges of 900 MHz and above.
73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
