[Elecraft] K3 huge noise

[Steve Ellington]

http://akqg2.2pycn.servertrust.com/iHearSafe_0153_Headphones_p/hp0871s.htm
Steve
N4LQ
N4LQ at carolina.rr.com
----- Original Message ----- 
From: "Ralph" <k1zzi at comcast.net>
To: <elecraft at mailman.qth.net>
Sent: Monday, September 07, 2009 1:32 PM
Subject: Re: [Elecraft] K3 huge noise


>I was operating in the TN QSO party on 80m last night in Diversity mode 
>with headphones on.  I'm not sure what I did but I got a huge continuous 
>blast in my right headphone.  I couldn't get the headset off fast enough. 
>I did a power on reset and it cleared.  I don't remember if I pushed NR or 
>not.  The blast not only blew my right eardrum but blew any memory I had of 
>what I was doing at that moment.  I do mean Ouch!
>
> Ralph K1ZZI
>
> Date: Sun, 6 Sep 2009 14:54:43 -0700
> From: "DAVID M. Elliott" <immondizia at earthlink.net>
> Subject: Re: [Elecraft] K3 huge noise
> To: "Eric Swartz -WA6HHQ, Elecraft" <eric at elecraft.com>
> Cc: mark roz <anegadasail at yahoo.com>, elecraft at mailman.qth.net
> Message-ID: <80B60CFB-C93A-4B00-83DC-921ECF12F5CB at earthlink.net>
> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
>
> Lyle hasn't got it yet!!
>
> Firmware 3.30 -- using NR (3-4) on SSB (14.178), first the volume
> control did not work then after a little while the K3 goes to full
> volume and only turning it off gets rid of the problem.
>
> THIS IS A SERIOUS PROBLEM!!!  Hearing loss could result.  Please got
> on this ASAP.
>
> 73 de W6BK
>
>
> On Aug 30, 2009, at 10:08 PM, Eric Swartz -WA6HHQ, Elecraft wrote:
>
>> Lyle just figured this out and corrected a typo in the dsp code. We
>> should have a new beta shortly - Hopefully before end of Monday.
>>
>> (This is why we release beta test versions.  ;-)
>>
>> 73, Eric
>>
>>
>> mark roz wrote:
>>> Almost lost my hearing.
>>> Loaded 3.27A. NR engaged. F1-1. VFO A CW on 40m. VFO B SSB 40m. AGC
>>> ON. Width 250Hz cw. 2.7 ssb.
>>> Now switched from CW to SSB portion of 40m by pushing A/B -
>>> horrible noise of very high
>>> amplitude  on speaker or headphones. Turned down the volume to min.
>>> and in few few seconds
>>> it stopped. Than again the same thing happened 70% of the time.
>>> This only happens if NR is engaged on A and B VFO and while
>>> switching from A to B.
>>> Just did it again-now on the internal speaker. Wow!! it is loud.
>>> Will not use NR for now.
>>> Anybody else can duplicate this??
>>>
>>> Beside that I like my new K3 a lot. This is my second K3.
>>> Mark wq7x
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