[RFI] PC Speaker "Buzz"

[Frank N. Haas KB4T]

Try a .1 uF disc capacitor across the speaker leads at each end of the
speaker wire. That's the cheapest way. Add ferrite as needed to add to the
caps.

Snap on Mix 31 ferrites with appropriate inner diameters for the speaker
wire should do the trick. If 3 or more snap ons don't kill it, you should
consider figuring out how to reduce the RF in the shack.

2.5 inch donut style mix 31 ferrites can be used individually or placed
together to create a super choke. I've had success with those for high
levels of RF. But the donuts are not cheap.

Good luck.

73,

Frank N Haas KB4T
Utility Interference Investigator
Florida
On Jun 30, 2015 8:08 PM, "Tony" <dxdx at optonline.net> wrote:

> All:
>
> What is the best method of reducing RF getting into ones PC speakers? Is
> it best to use ferrite beads and toroids in mix 31, 43 or a combination of
> both?
>
> Thanks
>
> Tony
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