[CQ-Contest] 12V 30A Switching Power supply recommendation?

[Karel Matousek]

Hi Barry.
I highly recommend PULS power supplies (https://www.pulspower.com/cz/ <https://www.pulspower.com/cz/>). I retired after twenty years as a testing engineer with the company, where I developed test programs for nearly all of their products using testers from NHR Research (https://us.testforce.com/brands/nh-research.html <https://us.testforce.com/brands/nh-research.html>). Personally, I have used these power supplies in my remote-controlled 160-meter station for five years, with excellent results.
Every power supply is stress-tested at full load for 24 hours before being certified. As a radio amateur, I paid particular attention to radiated noise and interference, which are crucial parameters for performance. Notably, the figures stated in the datasheets are often conservative compared to actual measurements. These power supplies are readily available from various vendors across the U.S. (https://www.pulspower.com/contact/puls-worldwide/?_sfm_continent=North%20America&_sfm_country=USA <https://www.pulspower.com/contact/puls-worldwide/?_sfm_continent=North%20America&_sfm_country=USA>).
For your needs, I recommend the CPS20.121 power supply.
Best regards,
Karel OK1CF
______________________________________________________________
> Od: "Barry Jacobson" <bdj at alum.mit.edu>
> Komu: "Barry W2UP" <w2up.co at gmail.com>
> Datum: 10.11.2024 23:06
> Předmět: Re: [CQ-Contest] 12V 30A Switching Power supply recommendation?
>
> CC: <cq-contest at contesting.com>
Why are you looking for a switcher? Linear power supplies have less noise
 but cost somewhat more. One of the heavy duty Astrons may work for you.
 They come with or without meters, with or without adjustable voltage and
 current. Some don't have fans and are very quiet.
 
 Barry WA2VIU
 
 --
 Barry Jacobson
 bdj at alum.mit.edu
 WA2VIU
 @bdj_phd
 
 On Sun, Nov 10, 2024, 8:10 AM Barry W2UP <w2up.co at gmail.com> wrote:
 
 > Looking for a recommendation for a 30A 12VDC switcher.  No RFI is very
 > important as my antenna is only about 15-20 ft away from the station.
 >
 > Tnx,
 > Barry W2UP
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