[RFI] DC Power supplies

Roger (K8RI) k8ri at rogerhalstead.com
Sun May 8 04:04:15 EDT 2016

That quiet power supply is a Tenma 40A with adjustable voltage.  It was 
sold by the same company that sells Rigol. I have A Rigol spectrum analyzer.


Roger (K8RI)

>> On May 6, 2016, at 12:06 PM, Roger (K8RI) <k8ri at rogerhalstead.com> wrote:
>> A couple years ago, I purchased a 30A switching supply with adjustable voltage on an introductory sale price.  I wish I'd purchased two as they are now over double the price.  Voltage and current are displayed in two digital readouts. I run a 756 Pro and a couple 144/440 duobander off it. That power supply is pretty much RF quiet even on the spectrum analyzer, except when starting  and that is both visible and audible for 1 to 2 seconds.  I assume that hash is outside the filtering range.
>> As it's in the shop station and I'm in the house, I'll need to look up the brand name when I go out.
>> 73
>> Roger (K8RI)

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