>
>
>> On Tue, 30 May 2006 15:53:10 -0500, Chuck Sudds wrote:
>>
>>>I have unshielded CAP-5 wire running from the
>>>tower to the house, approximately 125ft away, to my router
>
> I'm running a Gigabit Cat5e network with 4 computers a switch and router.
> The network spans about a50 feet from one iend to the other and for about
> 50
That was supposed to be 150 feet from one end to the other.
Roger (K8RI)
> feet the Cat5e runs with the coax.
>
>>
>>>I have never experienced any interference from the ISP setup to any ham
>>>frequencies that I operate (HF, 6M & 2M) BUT I occasionally interfere
>> with
>>>the ISP dish.
>>
>> I have identified SEVERE RFI from the Ethernet wiring and hardware to HF
>> at a site in CA. I have identified at least two culprits (and there may
>> be more), and they all boil down to LOUSY suppression from cheap network
>> gear.
>
> I run from 1.8 through the 440 band and do not hear any signals from the
> network that I can identiry.
> I'm using Link Sys and D-Link equipment which is not expensive stuff and
> has
> plastic cases.
> I've never been able to make wireless work through these buildings or at
> an
> acceptable speed.
>
> I do get noise but it's from a neighboring electric fence, baby monitors,
> scanners, etc...
>
> Roger Halstead (K8RI and ARRL 40 year Life Member)
> N833R - World's oldest Debonair CD-2
> www.rogerhalstead.com
>
>>
>> I would be VERY surprised if you don't have birdies from the Ethernet
>> cables on 14,030, 10,121, 21,052, and around 28,016. These are the ones I
>> often encounter on CW, and I'm sure there are others in the phone and
>> digital sub-bands and on the low end of 50 MHz. This is radiated common
>> mode by the cable, and can be fairly well suppressed by ferrite chokes.
>> See the tutorial on my website for details.
>>
>> http://audiosystemsgroup.com/publish
>>
>> Using shielded CAT5 will probably not help (where are you going to tie
>> the shield?), but putting it in electrically continuous grounded metal
>> conduit will.
>>
>> There is also direct radiation from unshielded network equipment. This
>> stuff is broadband noise. The only solution I know of is to shield it,
>> which can be a non-trivial project. :)
>>
>> Jim K9YC
>>
>>
>> _______________________________________________
>>
>>
>>
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>
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