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

[John Shadle]

Thank, all. I may have to look into that. It may just involve changing out
some runs of the cable. I used either CAT5 or CAT5e in all my runs. Just
odd that the noise is coming from the one location and not the others,
though. Ah well!

-john NE4U

On Fri, Feb 5, 2016 at 8:15 AM, David Ahrendts <davidahrendts at me.com> wrote:

> John, I’ll concur with Larry. I have several D-Link gigabit switches using
> CAT6 cable with no apparent noise, and I believe their “green” technology
> actually shuts off unused ports when not in use. Amazon.
>
> David A., KK6DA, LA
>
> On Feb 5, 2016, at 1:48 AM, Larry Gauthier (K8UT) <K8UT at charter.net>
> wrote:
>
> John,
>
> I had a similar situation here with a LinkSys switch. Tried a NetGear
> switch and the birdies moved - but were still present. Solved the problem
> by moving all networked devices from cat5 10 mb to cat6 1000t gigabit
> ethernet.
>
> -larry (K8UT)
> -----Original Message----- From: John Shadle
> Sent: Thursday, February 04, 2016 1:07 AM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] slightly OT -- acceptable network switch (aka
> Linksysproduces birdies)
>
> 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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> David Ahrendts   davidahrendts at me.com
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