[Elecraft] KPA100 option almost done...

[Curt Milton]

FB on your progress.  I built mine a few months ago
and really enjoy operating the rig.  

I suspect the power variation you cite is merely
thermodynamics.  Did you happen to touch the finals
key down?  

The VSWR sensor likely needs tweaking per the manual
instructions - mine recognizes a match pretty
accurately.  

My built-in speaker sounds dreadful as well !  I
wonder if its the impact of the metal shield ?  It is
especially sour sounding on CW, SSB is not quite as
bad.  If you do remove the shield, see how the speaker
sounds.  I figure the shield is to keep it from
becoming a receiver at 100 watts, and thumping on CW?

Proceed with care and enjoy the extra 8 dB gain in
output power.  

73, curt

--- Steve Kallal <n6vl at yahoo.com> wrote:

> Well after about a month, I almost have my KPA100
> option finished for the
> K2. I didn't accurately time the hours, but I think
> it is in the 25 hour
> region. This is the first serious kit I've built in
> years and the most
> serious ever. I had only one mistake to correct. U7,
> the dual op amp, was
> reversed. Once that got replaced, the amp came to
> life.
>  
> I have a couple of issues left, minor ones.
>  
> 1. The power does seem to vary a little bit on key
> down, nothing major, but
> a few percent before the power level settles. The
> TUNE function indicates
> 1.5:1 SWR into a dummy load. Perhaps I need to go
> back and retweak the SWR
> setting.
>  
> 2. The speaker sounds like the cone is bad. I
> ordered a bunch of parts from
> Elecraft, but the speaker slipped my mind. I will
> need to remove the shield
> if the speaker gets replaced. Does the adhesive
> comes loose easily?
>  
> Thanks for all help from this reflector!
>  
> 73,
>  
> Steve N6VL
>  
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