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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