Re: [amsat-bb] 100BaseT Woes

["Louis A. Mamakos" <louie@xxxxxxxxxxxx>]

It's VERY unlikely that you'll find any Category 5 cable that's shielded.
Almost universally, ethernet over twisted pair uses Unshielded Twisted Pair
(UTP) cables.

The ferrite core approach might work, though.  I think you can buy 
these from Radio Shack.

louie
wa3ymh

> Are you using cat 5 cable?  It should be shielded.  You might try a
> different length of cable...  Maybe the cable you are using is a perfect
> antenna...  I've never tried iron ferrite coils for networks but that may be
> an option as well...  Hmmm...
> 
> 73s,
> Eric KF4OTN
> 
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> -----Original Message-----
> From: Emily Clarke [mailto:w0eec@AMSAT.Org] 
> Sent: Wednesday, January 28, 2004 15:51
> To: amsat
> Subject: [amsat-bb] 100BaseT Woes
> 
> 
> I hope someone has found an answer to this because this is driving me nuts.
> 
> I have a LinkSys BEFSR41 100BaseT Router, and it's totally whiping out 
> 145.800 (The ISS downlink frequency) at about 60 over S9.  I know it's the 
> router and cabling because if I disconnect the twisted pair cabling into 
> the shack everything drops down to about S2 (the rest probably coming from 
> the router and the cable the server, both in the garage.
> 
> Is there any way to keep this stuff out of my shack short of running into 
> the garage and cutting power to the router when the ISS comes 
> around?  Seems extreme to do that.  I'm thinking maybe there are shielded 
> cables or filters that can be added?  Perhaps I need to add a grounding lug 
> to the router and ground it directly to the same ground as my rig?  I'm 
> willing to swap out the router too if I can be sure that will solve the 
> problem.
> 
> 73,
> 
> Emily
> 
> 
> 
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