[Elecraft] KX1 still Low Power

Fri Nov 28 22:00:05 2003

I saw that, Ron.  But it appears to be based on both bands having 
adequate power, but having more output on 20 than on 40, not the 
situation I'm in.  I know my difference is a bit more than the 0.6 W 
mentioned, but it is in the right direction (more output on 40 than 20).

Once I get the "adequate" worked, then I will see where I am

BTW -- just found four 36 ohm resistors of proper size in my parts box.  
I will change R30 from 22 to 36 (vs. 33) and see where that puts me re 
"adequate"; I guess if that makes it too hot, I can CCW the pot a tad.  
Then I will fiddle with L2 spacing if need be.

73, Phil

Ron D'Eau Claire wrote:

>Phil... look at the 40 meter transmit test on Page 59 of the Rev B manual.
>Balancing the output on 40 and 20 meters is part of the test procedure. You
>needed to squeeze the turns on L2 a tad. 
>
>Ron AC7AC
>-----Original Message-----
>From: Phil Wheeler [mailto:[email protected]] 
>Sent: Friday, November 28, 2003 6:18 PM
>To: Ron D'Eau Claire
>Cc: 'Alan WB6ZQZ'; [email protected]
>Subject: Re: [Elecraft] KX1 still Low Power
>
>
>I just did my initial testing and am getting a bit less out than I would
>like using a dummy load and a very accurate digital qrp wattmeter (don't
>recall the name of the kit I built it from).
>
>Using 13.8 V supply, I'm getting 2.6 W on 20 m and 3.5 W on 40 m.  The 40 m
>number is OK, but I would expect more than 3 W on 20 m.  Since this is not
>grossly off, I doubt if it relates to toroids or anything like that, unless
>turn spacing would make for small changes.  And R4 is Full CW (I know
>because I started with the other full CW -- need to understand clocks better
>-- and had zero power out).
>
>Looks like it is time for the "33 ohm solution" :-)
>
>Since I don't have anything near that at hand (should have bought one on the
>way back from my impromptu doctor visit), I will start building the options
>tonight and do the resistor change tomorrow. 
>
>Very happy with RX performance, by the way.  Seems hot and the filter can
>really get pretty sharp.  Plus really easy to tune in 20 m SSB stations and
>the like.
>
>73, Phil
>
>
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>

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