Thanks Don,
I go back and forth between the internal and external batteries, so I'm not
crazy about this as the stated life is limited for the potentiometer. Having
said that, I dialed it back to get 4 watts into a dummy load and very weak
power on internal batteries.
Here's the strange part,
Jim,
On the power issue, maybe you want to reduce the voltage when you
operate at home and keep R4 set to maximum for the sake of the internal
battery operation. A couple diodes in series with the power supply
should cut the voltage a bit and keep the KX1 out of the danger zone.
On your
It seems the power increase is only on 30 where my antenna is less than
perfect. I verified power with a W-1 and the internal watt meter is within
.25 watts on all bands...both say I'm pushing 5.5 - 6 watts with the antenna
connected, 4 watts with a dummy load.
I'll fiddle some more and also
I haven't used my KX1 in a while, but I noticed it is running over 6 watts
when connected to a 13.8 volt power supply on 30 and 40 meters. 20 meters is
about 4.2 watts and 80 meters is between 4.7 and 5.0 watts.
Is this excessive and will it cause damage or a dirty signal? If there is a
Jim,
Lower the power when running on the 13.8 volt supply - 4 watts or a bit
less. The components in the PA output circuit will thank you and live a
longer life.
You can use a slim flatblade screwdriver and adjust R4 through the hole
in the bottom of the enclosure (and also through the
Jim :
I made the documented power mod to my KX1 as I was getting too little power
out, but then I
had a similar experience to yours when running off of a power supply or a fully
charged SLA battery so
I built a poor mans voltage regulator that I can put in series with my power
cable when
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