[Elecraft] KX1 Power Output

Don Wilhelm w3fpr at embarqmail.com
Wed Aug 29 10:34:36 EDT 2007


Panos,

Great to hear you have the KX1 working.

If you have the correct number of turns on T1 and the red winding is 
spread over most of the core, then T1 is OK - I did not see anything 
wrong with it when it was here.

First try spreading/compressing the turns of L2 to see if the power 
output on 20 increases, then if you still do not have 3 watts on 20 
meters with a 12 volt (or 13.8 volt) power supply, my recommendation is 
to change the resistors for a little more output.

The power supply voltage does make a difference in the power output 
available from the KX1.

73,
Don W3FPR

Panos wrote:
> Hi all
>
>  
>
> KX1 sn #01859 completed and everything (except some unexpected birdies
> inside the band) seems
>
> Ok (receiver is fantastic IMO).
>
>  
>
> Power output on 7.100 Mhz is a hair less 3W and on 14.100 Mhz is 2.1-2.2 W
>
>  
>
> According to your experience out there what is best? :
>
>  
>
> a.	Take out the T1 transformer and try to rewind and reinstall it?
> b.	OR change the R11 and R30 to their PowerMod values?
>
>
>   


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