[RFI] RF getting into 4-port wirelss router.

[Roger (K8RI)]

I have a similar setup, but with 5 computers following an 8 port switch 
along with various net books, laptops, and smart TVs.  there are 3  130' 
runs of Cat 5 to the shop. 2 active and one spare.  The two computers 
are about 3 to 4 feet from a legal limit station and tied into it via 
USB.  Going the other direction there are 2 computers in the den along 
with a ham station at the end of 2 10' Cat 5 runs.  The 5th computer is 
in my wife's office at the end of a 30' run.  The printer is also there 
via wireless.

The Cat 5 runs almost directly under the length of a 160 half sloper and 
under the 40 meter sloping, center fed dipole. Running the legal limit, 
I've had no interference problems "that I've detected.

That makes me wonder "why" you are getting into the network.
I'd be hunting for the source first, or at least while trying to 
suppress it.  Are you sure it's RF getting in via the Cat 5.  You can 
eliminate the problem disconnecting the Cat 5, but is it RF or a 
grounding problem such as a AC or DC getting into the CAT 5.

The only problem with mine has been lightening.  Wireless is finally 
getting up to speed and after the lightening took out both my router and 
switch last summer I'm strongly thinking of going all wireless.

73

Roger  (K8RI)

On 1/11/2015 10:57 PM, Kenneth G. Gordon wrote:
> OK, gang, I need some different help here.
>
> I have a 4 port wireless router (Trendnet TEW-812DRU at the moment)
> connected to our main computer and two others in the home, not including
> the laptops that connect to it periodically.
>
> I have replaced the router at least 4 times over the past year or two due to
> the fact that RF from my ham station is getting into it through one or more of
> the three CAT-5 cables I have connected to it.
>
> I have installed several of those snap-on filters on all three of the CAT-5
> cables which connect to it, and also on both ends of the DC power cable,
> making seveal "loops" through each filter.
>
> I still wipe out the router every time I get on the air. I have destroyed one
> $169.00 router, and two less expensive ones, a TPNET and a Cisco.
>
> The only solution I have come up with is to disconnect the CAT-5 cables (all
> three of them) from the router each time I get on the air.
>
> Has anyone here had a similar problem, and if so, what did you do to fix it?
>
> BTW, one of my CAT-5 cables runs to the ham shack, where it connects to a
> dumb 4 port switch...
>
> This has become a giant PITA.
>
> Any ideas?
>
> Kenneth G. Gordon W7EKB
>
> "Courage is being scared to death but saddling up anyway."--- John   Wayne
>
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