Ii have been using the Astron SS-25M for 7 years with my K3 (s/n 11xx) and 
notice no issues with noise.  The same is true with my VHF and UHF transceivers.
73,
Jack, W3TMZ
> On Feb 16, 2017, at 7:40 PM, Kevin <ksto...@ac0h.net> wrote:
> 
> If the Astron ain't broke keep it. There would have to be a real good reason, 
> like parts becoming unobtainable, for me to consider getting rid of my 
> Astron. If they break they are dead simple to diagnose and fix and no chance 
> of making noise like a switcher.
> 
> 
> On 2/13/2017 12:51 PM, NOEL POULIN wrote:
>> Hi,
>> I am using a standard linear power supply with my new K3S.
>> Anyboy using the ELECRAFT SWITCHING POWER SUPPLY WITH THE K3S????
>> I am on the way to change my old Astron RS35M power supply....
>> Which one is better??    Linear or Elecraft Switching power supply????
>> Thanks
>> Noel
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> 
> -- 
> R. Kevin Stover
> AC0H
> ARRL
> FISTS #11993
> SKCC #215
> NAQCC #3441
> 
> 
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