[Elecraft] K3 very loud pops on 80m

[Mike]

Allan Taylor wrote:
> I have K3 S/N 740 and reasonably current firmware (late 2009). As it
> happens, I used the K3 for the first time on
> 80m last night during the CWT mini-event. During the appx. 20 minutes
> I was on 80m, I heard several VERY LOUD
> pops. They weren't sustained but were dangerously loud. The first few
> occurred with headphones on. I resorted
> to speaker operation after that. This has never happened on 40 or 30m
> where I have principally been operating with the K3.
>
> Is this a known problem? Am I missing a firmware update?  This was not
> nice at all.
>
>   
Latest regular firmware release, as shown on the website is MCU 3.77  / 
DSP 2.53  Feb 27, 2010. There is also a later beta version.

73, Mike NF4L