[R-390] R-392 quest for power

[Jack Antonio]

>I've tried 2 regulated supplies; a Systron Donner bench type supply, 
> and a Power One open frame job. Their outputs are clean as a whistle, but 
> they both radiate a loud buzz into the receiver from about 8 Mhz on down. 



One thing to try,  put a .01uf disc ceramic across each rectifier diode. This
cleaned up a couple of my  solid state supplies.  You might also try a .01 from
the transformer secondary leads to ground, and make sure the case of the
the power supply and receiver are tied together.

Hope this helps

Jack

Jack Antonio WA7DIA
scr-287@sbcglobal.net