Re: first post test and kx1 power issues

Posted by Don Wilhelm-4 on Apr 23, 2012; 6:10pm
URL: http://elecraft.85.s1.nabble.com/first-post-test-and-kx1-power-issues-tp7467649p7492800.html

What is your DC voltage?  The KX1 specification is 3-4 watts with 12
volts, so you are close to the spec right now.  If you have an antenna
analyzer, check you dummy load to be certain it is the same 50 ohm pure
resistive load on both bands.  Your wattmeter may also be frequency
sensitive - many are.

Yes, look at the toroids and the capacitor values in the LPF.

Don't push the power too far - the LPF componentscan be stressed with
power level much over 4 watts (that depends on the SWR).

73,
Don W3FPR

On 4/23/2012 1:11 PM, AC8JW wrote:
> I have just assembled s/n 2626 and have found low power output. Mine is a two
> band version with no options.  With a bench supply, I get 4 Watts on 20M and
> 3 Watts on 40M into a dummy load. This measured with an electaft W1.  I will
> look again at my LP toroids, but looks like I may need to do the power mod.
>
>
>
>
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