Topband: Wireless Internet RFI Issue

Tom W8JI w8ji at w8ji.com
Mon Jul 29 14:11:57 EDT 2013


That almost always is a switching power supply issue. The normal mode of 
excitation is differential between the power mains and other cables. My 
neighbor's system bothered me.

The BEST solution to this is a lightning protection type outlet strip that 
(if it does not have them) you add capacitors to. I used a system that had F 
connectors, eithernet, telco, and power.

This is thousands of times more effective than throwing beads at it and just 
hoping common mode impedances are so low the beads do something.

73 Tom



>I recently had an internet wireless antenna/unit installed as our DSL was
> painfully slow.
>
> Now I notice RFI in the AM broadcast band and into the 160 meter band.
> There may more
> RFI issues on other bands however at this point I haven't noticed 
> anything.
>
> I see that Fair-Rate makes a series of "New Low Frequency Suppression 
> Cable
> Component
> ferrites, though I am not sure what I should purchase.
>
> It looks like that I should be looking for a "certain impedance" for a
> particular frequency.
>
> Any help would be appreciated.
>
> 73 de Brian, KG8CO
> _________________
> Topband Reflector
>
>
> -----
> No virus found in this message.
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> Version: 2013.0.3349 / Virus Database: 3209/6529 - Release Date: 07/29/13
> 



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