[Elecraft] Possible K3s TX failure - distorted audio

[Nr4c]

Next step, Contact Elecraft Customer Service. 

Sent from my iPhone
...nr4c. bill


> On Oct 28, 2018, at 10:21 AM, Dave <rocketnj at gmail.com> wrote:
> 
> Bill,
> 
> Do you know what was fixed? Symptoms appear to be a bad device in PA.
> 
> Dave wo2x
> 
> Sent from my iPad
> 
>> On Oct 28, 2018, at 10:15 AM, Bill Johnson <k9yeq at live.com> wrote:
>> 
>> I did and sent in to factory to fix.
>> Bil
>> K9YEQ
>> 
>> Bill
>> 920-421-1172
>> 
>> ________________________________
>> From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> on behalf of Peter Dougherty (W2IRT) <lists at w2irt.net>
>> Sent: Saturday, October 27, 2018 11:36:40 PM
>> To: elecraft at mailman.qth.net
>> Subject: [Elecraft] Possible K3s TX failure - distorted audio
>> 
>> Hi all.
>> Early into CQWW this weekend I was getting reports of extremely distorted
>> audio from my K3s. Being mostly a CW (and 6m FT8) operator I wasn't sure
>> what was going on. I figured it was RF, but it was happening at all power
>> levels, from QRP to 100W, and QRO with my KPA-1500. Same (bad) audio, just
>> stronger/weaker signals. All bands were equally bad.
>> 
>> I ended up going from the radio directly to the tower, physically bypassing
>> the amp and tuner, and only running low power, with the same result. It
>> sounded more like distorted audio than RF ingress.
>> 
>> Some troubleshooting by Dave, WO2X, who is a Flex owner: He remoted in to
>> his Flex a few miles away and noticed my garbled signal was absolutely dirty
>> and wide, despite low mic gain and little or no compression. The audio
>> sounded clean through the monitor, so it wasn't the audio chain. He's
>> speculating I may have a blown FET in the PA stage.
>> 
>> We put in a Flex 6500 temporarily and it seems to be running fine. Wondering
>> if anybody here has had experience with this, and if so, what are my next
>> steps?
>> 
>> Thanks in advance.
>> 
>> ---------------------------------------------
>> 73 and Good DX
>> Peter, W2IRT
>> 
>> K3s S/N 10023
>> 
>> 
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