I tried putting loads of mix 31 toroids on the lines, and it did very little. I'm wondering of moving to gigabit will change things.
I tried using different power supplies I had on hand, but those had absolutely no effect on the noise. It's coming from the network switch. -john NE4U On Feb 6, 2016 11:24 AM, "Larry Gauthier (K8UT)" <k...@charter.net> wrote: > 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 >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net <Elecraft@mailman.qth.net> >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to k...@charter.net >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net <Elecraft@mailman.qth.net> >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to davidahren...@me.com >> >> >> >> >> >> David Ahrendts davidahren...@me.com >> >> >> >> >> >> ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k...@charter.net > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
