[Elecraft] Oscillating Lab Power Supply

[Scott Ellington]

The other day, I was testing my new KX-1 with one of these power supplies:

http://www.amazon.com/Mastech-HY3005D-Variable-Linear-Supply/dp/B000E14F56

It caused some awful garbage to come out of the KX-1, which was caused 
by the power supply oscillating and generating a bunch of 120 Hz 
ripple.  They're sold under several brand names, and there are several 
versions, all basically the same.  I'm guessing I'm not the only one who 
was attracted to their low price.

The fix is easy, though it took most of the day to figure out. Contact 
me if you need it.

73,

Scott  K9MA

-- 
Scott Ellington  K9MA
Madison, Wisconsin, USA

k9ma at sdellington.us