[Elecraft] slightly OT -- acceptable network switch (aka Linksys produces birdies)

[Robert Nobis]

John,

Take a look at Jim Brown’s (K9YC) RFI tutorial:  http://audiosystemsgroup.com/RFI-Ham.pdf

73,


Bob Nobis - N7RJN
n7rjn at nobis.net


> On Feb 3, 2016, at 23:07, John Shadle <shadle at katzenfisch.com> wrote:
> 
> I just completed my K3S build and initial configuration. Woohoo. I was
> tuning around the bands, and I noticed birdies *everywhere*. Every 20-30Hz
> on 40m there was one -- and it was LOUD. I thought that something was up
> with my build, but then started doing an internet search for "K3 birdies".
> I saw one person (from a 2010 post on this list) note that the birdies
> could be coming from network devices (routers). A-ha!
> 
> Initially, I thought it had something to do with my ASUS wireless router
> being extremely close to my operation location. I unplugged it, and the
> noise went away. Then I plugged it back in and removed, one by one, the
> connections to various devices (network storage, my shack computer, and the
> line that runs to my upstairs office). It just so happens that I had
> installed a network switch recently (produced by Linksys, and on sale at
> Best Buy last week). I unplugged the cable going to that switch, and the
> noise went away. I then plugged it back in, and went to the office and
> disconnected the power from the Linksys switch. Noise is gone again.
> 
> So, I'm looking for a new network switch. Does anyone have advice on what
> has worked for them?
> 
> Alternately, any idea on how to get the network switch from producing these
> awful birdies?
> 
> I'm *not* looking for a new router -- but just a switch.
> 
> Thanks.
> -john NE4U
> Madison, WI
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