[Elecraft] K3s Odd sound vibrations Edit - Hypothesis, Steps, Conclusion, and Request.

[Clay Autery]

Howard is a good man.  Glad you were able to ID the issue cause.  Sorry
it took me so long to get on-board.  I'm studying for my Extra exam
Saturday and am not paying close attention)

IDEALLY, the external speaker (if I had the money right now, 2 each)
would be a great "fix", but I would also HAVE to fix the internal
speaker induced issue (curse of being me).

Fixing the beads will stop their migration inside the enclosure, BUT to
"fix" it so that they won't buzz AT ALL at any freq, will require one or
more of the following:

1) AFTER the silicone is cured fixing the beads to a specific location
on the conductor, coat the outside of all beads with a thin insulating
layer of silicone that will stop them from vibrating the entire
conductor/bead assembly against dense parts in the module (PCB or metal).
2) Silicone the bead/conductor assembly to a convenient hard surface
such that they can NOT make direct metal to metal contact... and will
not move at all under normal ops.

______________________
Clay Autery, KG5LKV
(318) 518-1389

On 2/17/2016 1:05 PM, Jerry Moore wrote:
> 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.