That's exactly what I found. After speaking with Howard I've wedged the ferrite with a bit of cardstock and the buzzing is gone where I listen. If I change the spot frequency around I am able to find harmonic spots that make the case buzz. Howard also gave permission via one of the other folks there to put a dab of silicon on the ferrites to stop the rattle. Easy fix. The result seems to depend on where you like the monitor frequency to be.
I like Howard's suggestion to go with an external speaker or use a headset. At this point it's fixed for my use. Thanks. Jerry Moore CDXA, INDEXA, SKCC, Fists AE4PB, K3S - S.N. 010324 http://www.qrz.com/db/AE4PB An Amateur is - Considerate, Loyal, Progressive, Friendly, Balanced, and Patriotic. -----Original Message----- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Clay Autery Sent: Wednesday, February 17, 2016 1:48 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3s Odd sound vibrations Edit - Hypothesis, Steps, Conclusion, and Request. Another possible cause... If you have the 100W PA option, you MIGHT be hearing ferrite beads rattling inside the PA module. I don't know why they are loose on the wires, but they are and you can hear them rattle when you shake the module prior to install. The Assembly Manual references them and says the rattling is "normal". IF they are the source of your buzzing, the module will need to be disassembled and the ferrite beads fixed in some fashion so they don't move and/or make contact with metal enclosure, shield, et al. ______________________ Clay Autery, KG5LKV (318) 518-1389 On 2/17/2016 12:18 PM, Jerry Moore wrote: > Final edits: sorry for the resend but I keep needing to update the > email as it's missing parts. > > > > Hi, I thought I had the sound issue licked with the loose case screws > but I still hear the buzz. I believe I found the issue and it's NOT > the speaker (well I don't believe based on my findings). > > > > Hypothesis: > > I strongly suspect loose transformer cores are the cause of the > buzzing that are especially louder at different harmonics. > ______________________________________________________________ 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 je...@carolinaheli.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 arch...@mail-archive.com
