[Elecraft] New 30A power supply on Elecraft order form

[Merv Schweigert]

Wayne is totally correct,   I have had most all of them and ZERO are 
noise free,
my location has a very low noise level,  S1-S2 and every switcher shows 
a noise
rise on some band,  or spurs on others.
A noise free one has not been invented,  amen,

I have had to revert to linear supplies as I wish to hear signals at 
S1.. a whole new
world there so to speak.  the K3 is superb for hearing them with strong 
signals very
close by,
Of course with a switcher you dont have to worry about that, you wont 
hear them,
or if you live in town with a s4-s5 noise floor,  sorry your out of luck.

73 Merv K9FD/kh6


> We've had very good results using this supply ourselves. That said, results with switching supplies can vary with type of antenna feed. For example, I wouldn't use a switcher if you have no choice but to use an random wire leading directly from window to rig. Good grounding can also help.
>
> I'm not sure if a 100% noise-free 30-amp switcher has ever been designed. If it has, chances are it would be far more expensive than this one. But if you've found one, please let us know.
>
> 73,
> Wayne
> N6KR
>
>
>
> On Apr 14, 2015, at 3:47 PM, David and Dianne on Comcast <dhhdeh at comcast.net> wrote:
>
>> Check out the 25 eHam reviews.
>>
>> It's not without issues for some reviewers.
>>
>> Mostly RFI on some HF bands and fan noise.
>
>
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