John
I think I have been mis-understood; or perhaps I mis-spoke. ;-)
I could not migrate to gigabit ethernet from 10 MBPS because the CAT5 cable
I was using only had two available pairs. I replaced the CAT5 with CAT6 with
4 available pairs, but that alone would not have solved my birdie problem.
The real "fix" was in the move from 10 -> 1000. I do not believe that
changing cables alone will solve your problem.
-larry (K8UT)
-----Original Message-----
From: John Shadle
Sent: Friday, February 05, 2016 10:14 AM
To: David Ahrendts
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] slightly OT -- acceptable network switch (aka
Linksysproduces birdies)
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 <davidahren...@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) <k...@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@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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