[Elecraft] K2: K2/100 birdie @ 3589

[Don Wilhelm]

  John,

I have not discovered the source of that birdie, but it is there.

Yes, 20 Hz is the DAC limit in the K2.

73,
Don W3FPR

On 11/2/2010 7:50 AM, VK7JB wrote:
> Hi All,
>
> I've just finished K2/100 #6998.  After blowing the PA transistors of the
> base K2 by accidentally dropping the frequency probe into the works, I've
> completed the KPA100, installed it and all is working very well.  Made
> several SSB contacts tonight and I couldn't be happier.  I have a great
> sense of achievement :)
>
> I'm curious about a prominent birdie, zero beat at 3589khz.  It's present,
> and more prominent, with the antenna disconnected and has its origin
> internally.
>
> There are some postings about this birdie from around 2008, but I don't see
> any resolution.  I can live with it, even though it's inconveniently located
> right where I like to work on SSB phone.  Did anyone work out where this
> comes from and whether or not there is a simple fix?
>
> Also, I've calibrated the K2 reference oscillator several times according to
> the N6KR method.  The result is that my frequency display is 20hz off
> frequency after the rig has warmed up:  eg it reads 9999.98 for 10000.00 WWV
> signal.  Am I correct in understanding this is about as good I can expect
> given the DAC parameters of the K2?  I can't seem to improve on it further
> by repeating it.
>
> 73,
>
> John
> VK7JB