[Elecraft] K3 VFO tuning hash

[WILLIS COOKE]

John, I spend a lot of time on ten and a fair amount on six.  I usually operate CW with most of my activity around 28.05.  I hear some noise on ten meters occasionally when the band opens which I attribute to broad band interference coming in on skip.  It varies with beam heading, but not with any tuning parameters.  I have speculated that it may be a Broad Band over Power Line artifact, but I can't confirm that.  Does your noise go away if you switch to a dummy load, or change your beam heading?

Willis 'Cookie' Cooke 
K5EWJ


--- On Fri, 6/26/09, John Lawrence <jsl at hughes.net> wrote:

> From: John Lawrence <jsl at hughes.net>
> Subject: [Elecraft] K3 VFO tuning hash
> To: elecraft at mailman.qth.net
> Date: Friday, June 26, 2009, 10:20 AM
> Now that 6 and 10 meters have been
> open to Europe and Africa, I frequent
> these bands for the first time in the six months of owning
> a factory built K3 radio.
> 
> What I've discovered and reported to factory tech support
> is a very noticable hash noise
> while in the receive mode with any bandwidth centered
> around 28.000 MHz to 28.050 MHz.  And, it is also
> present while tuning RIT.  It sounds like synthesizer
> switching noise and its repetition rate increses when the
> VFO is set to fine
> tuning. I do not hear it on any other band.  I also
> don't hear it over the entire 10 meter band, just the region
> as stated.  
> 
> Is this in other K3s or is there something going on that
> needs attention in only my radio?  I called factory
> tech support over a week ago.  Since they have not come
> up with an answer it seemed time to open it up to a wider
> group of users.
> 
> Thanks
> 
> 73,
> 
> John,  W1QS
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