[Elecraft] K2 RF power fluctuate
barry halterman
kthreebo at gmail.com
Sun Jul 26 11:21:12 EDT 2020
Greetings. I just completed my K2 build and the RX works great. Wish I
would have done this years ago. One issue I noticed with the transmitter is
that when I press the tune button, the output power will either be above or
below the power control setting. I found this during the transmitter
alignment phase of the build.
If I have the output power set for 2 watts, I get 2.8 or 1.6. if I have the
output set at 10 watts I get 9 or 5 watts. I am using an external watt
meter and I verified that the voltage to the K2 is around 13.6 volts. This
occurs on all bands by the way.
I have checked RF voltages back to the control board at Q8 Valc and found
that the output voltage , at this point, varies by a few tenths of a mv,
thus changing the drive power down the line, changing the output power that
changes the Valc output..... Round robin situation!!
Anyone have a similar situation?
Thanks
Barry
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