[Elecraft] KX1 - S/N 2543 Received and ready for build

[Don Wilhelm]

  Ken,

The actual power output will vary from KX1 to KX1 due to care in 
building as well as component tolerances.
The power mod is helpful in about 50% of the KX1s with the KXB3080 option.
If you do install the power mod resistors at the start, save the 22 ohm 
and 10 ohm reistors until you have finished testing the KX1 - apply a 
good 13.8 volt power supply and see what the maximum power output is on 
all bands - normally 80 and 30 will be the bands with the highest output.
If the power exceeds 5 watts, go back to one or both of the original 
resistors.  You don't really want to damage the KX1 PA output components 
with too much power - remember the voltages can build pretty high if the 
SWR rises, and can exceed the capacitor ratings in the LPF.

Enjoy the build process, and take your time so you can do good quality 
work.  There is no reward for doing it faster than anyone else.

73,
Don W3FPR


On 6/16/2011 4:05 PM, racekr wrote:
> Stan, Ron, and Don, Thanks for the replies.  Sometimes it just takes a few
> words of wisdom to encourage others.  I think I'm ready to get started.  I
> finished all the inventories last night.
>
> Don, I did have one other question regarding your reply.  Since the power
> output mod is included in the 3080 kit (granted it's only two resistors),
> does that indicate that the majority of KX1 radios will need this mod?  I
> guess what I'm asking is whether there is a better than even chance that
> I'll need to make the modification.  If so, I'll do it as part of the kit
> build.  If not, I'll hold off and see what the initial results are.  Any
> thoughts?
>