[RFI] FCC Complaint Filing

Jim Brown jim at audiosystemsgroup.com
Sat Nov 23 14:13:25 EST 2019

On 11/23/2019 9:18 AM, David Eckhardt wrote:
> Radiated emissions (typically what causes hams interference) is regulated
> and levels specified only at and above 30 MHz.  Below 30 MHz, 150 kHz
> through 29.99999.... MHz, conducted energy is specified and measured.

This is NOT correct. CONDUCTED emissions are the primary cause of RFI at 
all frequencies, but especially below 30 MHz, through a mechanism first 
identified in the world of pro audio as "The Pin One Problem," whereby 
cable shields are improperly terminated to the circuit board rather than 
to the shielding enclosure. The same error is also quite common with the 
Green Wire for power wiring.

Detail on this at k9yc.com/publish.htm

73, Jim K9YC

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