Re: KX1 - >6Watts on 30&40

Posted by Don Wilhelm-4 on Jul 22, 2010; 2:57pm
URL: http://elecraft.85.s1.nabble.com/KX1-6Watts-on-30-40-tp5325218p5325728.html

Jim,

Lower the power when running on the 13.8 volt supply - 4 watts or a bit
less.  The components in the PA output circuit will thank you and live a
longer life.

You can use a slim  flatblade screwdriver and adjust R4 through the hole
in the bottom of the enclosure (and also through the tuner) - that is
why it is there.

73,
Don W3FPR

Jim - W6VAR wrote:

> I haven't used my KX1 in a while, but I noticed it is running over 6 watts
> when connected to a 13.8 volt power supply on 30 and 40 meters. 20 meters is
> about 4.2 watts and 80 meters is between 4.7 and 5.0 watts.
>
> Is this excessive and will it cause damage or a dirty signal? If there is a
> problem, where should I begin my search? Internal batteries generate
> significanlty lower output:
> 80M 1.7W; 40M 2.5W; 30M 2.0W; 20M 1.8W
>
> Jim W6VAR
>  

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