[RFI] USB RFI

[Mike Smith VE9AA]

I can only speak to what worked here.  I used to constantly lose connection
to N1MM and also to my Winkeyer (and later, my YCCC SO2R+ box).all on
separate USB cables.

 

Occasionally, even at QRP levels.

 

I was plagued with it. My shack looked like a stockpile of Ferrite had
gobbled up all my cables.

 

In the end, the one thing that proved most valuable was actually super
simple.  I took a teeny tiny wire...perhaps a #26, stripped a couple inches
of insulation off the end of it and wrapped it around the shell/shield of
one of the USB cables entering my (plasticky) 10yr old laptop.  I attached
that wee pigtail of wire to my station ground with a larger wire.

 

Voila! 99.9% of my RFI instantly went bye bye.

 

Good luck.

 

Mike VE9AA

 

Mike, Coreen & Corey

Keswick Ridge, NB