[RFI] Linksys RFI

Ernie ks4q at zingleman.com
Mon Oct 13 13:29:27 EDT 2003

Did you try putting a torroid on the DC power cord (very close to the
coaxial power plug) yet?  This is standard operating procedure around here
with all wall warts that get plugged into equipment with clocks and
microprocessors in them.

It can also keep your HF RF energy (getting into the house AC wiring) from
knocking your router offline.

Ernie KS4Q

----- Original Message ----- 
From: <rfi-request at contesting.com>
To: <rfi at contesting.com>
Sent: Monday, October 13, 2003 12:00 PM
Subject: RFI Digest, Vol 10, Issue 6

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> Today's Topics:
>    1. Re: Wireless router EMC/RFI on 1,8 and up to 30MHz?
>        (Martin Ewing AA6E)
> ----------------------------------------------------------------------
> Date: Sun, 12 Oct 2003 22:35:09 -0400
> From: Martin Ewing AA6E <aa6e at arrl.net>
> To: rfi at contesting.com
> Cc: kiddi at marel.is
> Subject: [RFI] Re: Wireless router EMC/RFI on 1,8 and up to 30MHz?
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> I am using a Linksys WRT54G DSL/wireless router in the shack.  The WiFi
> causes no trouble, but the CPU inside (which runs Linux by the way) does
> share of radiating.  It's pretty bad at various spot HF frequencies, but I
> work around it.  When I get around to it, I may try to put it in a
shielded box.
>   It comes in an RF-transparent plastic shell.
> It has saved me lots of effort running CAT5 wiring throughout the house,
> it's a mixed blessing if you care about weak signals.  (But CAT5 with
> has its own problems.)
> 73, Martin AA6E
> -------------------
> I am considering getting a wireless router to connect my home computers to
> the ADSL internet connection.  Are there any comments from other hams on
> RFI from these devices interfering with HF reception, or on their
> robustness against RF field generated by nearby transmitters?
> Any comments or suggestions regarding brand names - any manufacturers with
> reputation for better/worse EMC than others?  In my case the local ISPs
> at the moment promoting wireless routers from Thomson-Alcatel and from
> Aceex.
> Any comments or suggestions would be appreciated.  73 de Kristinn, TF3KX
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