[Elecraft] Power Supplies for K3

[Ross Primrose]

And, the Feb. 2012 QST reviews:

Jetstream JTPS30M
Powerwerx SS-30DV
QJE DX PS30SWII
Ten-Tec 941

73, Ross N4RP

On 6/13/2013 2:16 PM, Reinaldo Leandro, YV5AM wrote:
> The July 2006 issue of QST carries an updated article reviewing power
> supplies:
> Switching Power Supplies:
> • DAIWA SS-330W
> • KENWOOD KPS-15
> • MFJ-4125
> • TEN-TEC 963
>
> Do not forget the Gamma Research HPS-1a Switching Power Supply, reviewed in
> Sep 2007.
> I use it when operating away from home. Nothing can beat the small size and
> weight.
> 73
>
> Reinaldo, YV5AM
>
> -----Original Message-----
> From: Dave Hachadorian [mailto:k6ll.dave at gmail.com]
> Sent: miércoles, 12 de junio de 2013 15:28
> To: Elecraft Reflector
> Subject: Re: [Elecraft] Power Supplies for K3
>
> It was interesting to re-read the ARRL reviews of some of the switching
> supplies:
> http://www.arrl.org/files/file/protected/Group/Members/ProductReview/pdf/pr0
> 001.pdf
>
> The switchers were fairly RF-quiet at low current draw, and then created
> more noise as they drew more current.  This is fine for the usual
> single-transmitter ham station, but could be an issue in so2r or multiop.
>
> I use a single Astron RS-35A analog supply for so2r with two K3's.  It works
> great, and it is a fail-safe way to ensure that both K3's can not transmit
> at the same time. The supply will simply groan and give up!
>
> Astron linear supplies also have a simple (internal) voltage adjustment, so
> you can pump the voltage up to 14.5 for reduced IMD.
>
> Dave Hachadorian, K6LL
> Yuma, Arizona
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-- 
FCC Section 97.313(a) “At all times, an amateur station must use the minimum transmitter power necessary to carry out the desired communications.”