Steve,
Those AC voltage measurements are intended to check your power supply
ripple voltage (and noise pickup). The AC is *NOT* coming from the KX1
and is not an indicator of any KX1 problem.
The solution is to use a cleaner power supply.
If you are using one of the 'wall-wart' type power supplies, *DON'T*.
Use a good regulated power supply or a 12 volt battery (gel cell or other).
73,
Don W3FPR
Steve Watkins wrote:
The voltages I'm seeing on both the cathode and anode of D2 are higher than
called for in the manual. I am seeing approximately 0.225 volts a.c. on one
end and about 0.110 volts a.c on the other end of the diode. Pins #1 of U1 and
pin #6 of U3 show about 3mv.
I rechecked to assure the three capacitors mentioned in the note at the bottom
of page 28 were installed in the correct orientation, and also rechecked the
solder connections.
The note mentions stray a.c. may be being picked up as noise and to try a
different DMM. I do not have another DMM at the moment to check it with.
Any ideas from my Elecraft family?
Should I continue on or not proceed until I get this corrected or checked with
a different DMM?
Any assistance would be greatly appreciated.
Thanks, Steve
NE7RD
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