[Milsurplus] switching power supplies

[Mike Hanz]

On 7/25/2012 10:27 PM, Ralph Cameron wrote:
> I bought a "bargain" 24V at 6A supply from a California outfit to run a
> BC-348 and it was absolutely useless because of the conducted noise
> throughout the whole spectrum covered by the 348. That's what you get
> for $19.95

Ralph, crank up that spirit of adventure and experimentation!  I seem to 
recall hams going to extraordinary lengths to tone down TVI in their war 
surplus transmitters, and the same shielding and bypassing techniques 
will work admirably...   A scope will help track down noise on input or 
output lines, and that may be all you need to treat unless the supply is 
very open construction.  In that case you'll have to use some shielding 
approaches.  Anyway it might be a way to salvage that investment.

73,
Mike  KC4TOS