The Astron SS-30M power supply.

I picked up the new power supply last week on Friday from the post office just in time for the CQ WW CW DX contest. The power supply I ended up choosing was the Astron 30 amp switching power supply. Yes I wandered away from the linear power supplies and into the dark side of the switching power supplies. The supply had very good reviews and now that I am on a fixed budget the linear supplies were just a bit to high for the budget. I have been using this supply for over a week now and am very pleased with it. There is no"hash" from this supply that I have read about online with other switching supplies. I have used it in the CW contest and also this week on FT8 and it has not heated up at all. After repairing the Astron RS20 I decided to keep it as a back up supply just in case the new supply in the future lets me down.....BUT when I do use it I will keep its duty cycle in line to what it has been designed to handle and not what I was putting it through.
Mike Weir, VE9KK, is a regular contributor to and writes from New Brunswick, Canada. Contact him at [email protected].

2 Responses to “The Astron SS-30M power supply.”

  • Howard AC4FS:

    I’ve been using the same Astron SS-30M power supply in my shack since I bought it in November 1998. So far it hasn’t given me a bit of trouble, and has been used fairly hard at times. I also have an Astron SS-25M stashed away as a backup power supply, should the SS-30M fail, but so far I haven’t had to use it for that purpose. I do take the SS-25M out to Field Day though. Saves me from having to disconnect my SS-30M.

    73, Howard

  • Mike ve9kk:

    Good morning Howard, that is very good news to hear that it has been working well since 1998. Yes I think it’s wise to have my repaired RS25-M hanging around as a just in case supply.
    Thanks for the comment Howard
    Have a great week.

Leave a Comment

Subscribe FREE to's
Amateur Radio Newsletter
News, Opinion, Giveaways & More!

Join over 7,000 subscribers!
We never share your e-mail address.

Also available via RSS feed, Twitter, and Facebook.

Subscribe FREE to's
Amateur Radio Newsletter

We never share your e-mail address.

Do you like to write?
Interesting project to share?
Helpful tips and ideas for other hams?

Submit an article and we will review it for publication on!

Have a ham radio product or service?
Consider advertising on our site.

Are you a reporter covering ham radio?
Find ham radio experts for your story.

How to Set Up a Ham Radio Blog
Get started in less than 15 minutes!

  • Matt W1MST, Managing Editor

Sign up for our free
Amateur Radio Newsletter

Enter your e-mail address: