Posted by Ralph Tyrrell on May 26, 2009; 4:24pm URL: http://elecraft.85.s1.nabble.com/K3-Switching-Power-Supply-tp2973996p2975700.html
I have been using the Alinco DM-330MV.
Have worked all bands (just got a 12 m QSO today) that the K3 covers.
No switching noise noted.
Most operation has been 80, 40, 30 and 20 m.
Enjoy having the meter and ability to vary the output voltage.