[Elecraft] Gamma Research Very Small Switching Power Supply

[Leigh L Klotz, Jr.]

Good point Karl!  I don't have an MFJ to compare but I will bring it 
along to AmTech day or Pacificon to test.  It fits in my front pocket.
73,
Leigh/WA5ZNU
On Sun, 1 Oct 2006 4:39 am, Karl Larsen wrote:
> Leigh L. Klotz Jr wrote:
>> With 5 farads of filtering it's a probably a bit quieter than the MFJ.
>    The Q of a 5 Farad capacitor is not good. It will carry the peak 
> current from a SSB transmitter but it will not control RF noise. This 
> comes from the high frequency chopping of the input 120 Volts. MFJ has 
> some inductors and low value caps in their power supply to control RF 
> noise.
>
>    A 5 Farad cap is not cheap. I guess that is why it is more 
> expensive.
>
> 73 Karl K5DI
>
>>
>> Karl Larsen wrote:
>>>    Hi Henry, you can buy a power supply which is more powerful and I 
>>> use daily for a FT-857D for SSB and CW which is made by MFJ. It is 
>>> the MFJ-4125 which is rated at 25 Amps all the time and it SAYS "no 
>>> noise on all Ham bands", and it sells for $100.00.
>>>
>>>    Your power supply doesn't even mention power supply noies.
>>>
>>>
>>
>>
>
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