[RFI] 160m-5mhz noise?

Charlie Gallo Charlie at TheGallos.com
Sun Nov 8 10:23:26 PST 2009

On 11/8/2009 Paul Christensen wrote:

>> Just to say that switch mode supplies CAN be made to be as RF quiet as any 
>> linear supply.

> While a switch-mode supply can be made as quiet as a linear supply, 
> oftentimes they are not.   The quality power supply brands are generally not
> a problem.  The problem more often is from an Asian import "brand "X" 
> supply.

I'll agree totally, it's just that "we" as hams usually tar all "switch-mode supplies" with a broad brush, and if we want to try and stop this, I thing we need to say "poorly made switch mode supplies", particularly when we complain, as switch-mode supplies are NOT going to go away, simply because of efficiency reasons.  It's that it doesn't make us look like backwards anti-tech Luddites (whcih, with insistence of things like CW, and complaining about 'rural broad band' (aka BPL - but lets look at it how non hams look at it for a minute), we tend to look like

73 de KG2V

For the Children - RKBA!

My Website: http://www.thegallos.com
My Blog: http://kg2v.blogspot.com

Secrecy is the beginning of tyranny.
 --Lazarus Long

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