[Elecraft] K3 Popping noise in headphones??

[Jim Bolit]

I use the BW control a lot as most of my work is weak signal CW.
There was no popping before, and my ears are "on max gain" with weak signals, that are at or near the noise floor.  The popping is VERY annoying and at times it "hurts" the ears when digging for signals and changing the BW control from 200 Hz to 150 Hz, to 100 Hz and finally to 50 Hz.  The popping is present as I rotate the BW control back to wider bandwidths also, but the popping stops once above 200 Hz bandwidth.
JimW6AIM


.

-------- Original message --------
From: Vic Rosenthal <k2vco.vic at gmail.com>
Date: 10/16/2015  10:42 PM  (GMT-08:00)
To: jim <jbollit at outlook.com>
Cc: "<elecraft at mailman.qth.net>" <elecraft at mailman.qth.net>
Subject: Re: [Elecraft] K3 Popping noise in headphones??

Yes, I have it too, and I didn't notice it before installing the new synths. Doesn't bother me.

Vic
Sent from my phone

> On Oct 17, 2015, at 4:01 AM, jim <jbollit at outlook.com> wrote:
>
> I just got my K3 back from Elecraft.  They did the once over and installed
> the new SYN boards.
>
>
>
> I have noticed a "popping" noise in the headphones as I change the bandwidth
> control, but ONLY as I transition from 200 Hz, 150 Hz, 100 Hz and 50 Hz.  I
> have only checked this in the CW mode.
>
>
>
> This popping noise was not there before sending the rig in.
>
>
>
> I have the 500 Hz and 200 Hz crystal roofing filters installed, which is the
> same configuration as I had before sending it to Elecraft.
>
>
>
> Any thoughts?
>
>
>
> Tnx
>
>
>
> Jim
>
> W6AIM
>
>
>
>
>
> .
>
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