[RFI] 13,000 Lumens - 150 watts - bad RFI

Jim Brown jim at audiosystemsgroup.com
Thu Nov 12 13:10:19 EST 2020

On 11/11/2020 6:27 PM, Michael Aust via RFI wrote:
> FT-240-31 with many turns both wires Hot and Neutral can do it , but sometime ms it can take more filtering depending if more Common Mode or more Non Common Mode rejection is needed

All three wires, phase, neutral, and ground must be wound through the 
core because noise is usually on the green wire.

>    Also the CorCom EMI Filters found on EBay like the1EB3 module can help also ( one with > 50dB rejection ) over HF to 50MHz helps for both modesof rejection
>    Also using TripLite Isobar 110VAC Extension units with 4  to 6 output outlets can also help and have 60dB, 80dB and 100dB outlets to chose from

The filters in these units do NOTHING to noise on the green wire. See 
the link I posted yesterday to k9yc.com/RFI-Ham.pdf

73, Jim K9YC

More information about the RFI mailing list