re:sick kx1 1069

[kc5wa]

Dave Anderson, K4SV wrote:

>Hi All,
>
>In testing the transmitter it too worked but here is
>my problem.  With a 12 volt external power supply I am
>only able to get 2.5 watts out on 40 and almost 2 on
>20 meters. No, the power does not sag.
>  
>
I also had low power on KX1 #1056 pretty much the same levels as yours .
It was suggested that
I compress the windings on "L2" to about  70% of the core coverage
instead of the 90% that is used.
When this was completed my power came up to about 3 1/2 watts but YMMV
de "rc" kc5wa

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[Aaron-88]

What is the value of R30? If you change out this 22 ohm resistor with a 33
ohm resistor you should see an increase in power out. Mine also had low
power TX but after this mod it is up to where it should be. Check out the
archives from this reflector on low power on the kx1 for more discussion on
this issue.

73

Aaron KC7RSO

KX1 SN# 1037
-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Robert Conley
Sent: Thursday, March 31, 2005 9:37 PM
To: elecraft@Elecraft List
Subject: [Elecraft] re:sick kx1 1069


Dave Anderson, K4SV wrote:

>Hi All,
>
>In testing the transmitter it too worked but here is
>my problem.  With a 12 volt external power supply I am
>only able to get 2.5 watts out on 40 and almost 2 on
>20 meters. No, the power does not sag.
>  
>
I also had low power on KX1 #1056 pretty much the same levels as yours .
It was suggested that
I compress the windings on "L2" to about  70% of the core coverage
instead of the 90% that is used.
When this was completed my power came up to about 3 1/2 watts but YMMV de
"rc" kc5wa

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