Hi!
I've had Astron switching power supplies for many years. If they give off any RF noise/interference, I don't see it on ham bands. They are quiet. I also have a Powerwerx SS-30DV switching power supply for operating away from home. The Powerwerx unit is small, and also has been quiet when used with my ham gear. The only thing you have to do with the Powerwerx units is to make sure the AC voltage is properly set on the back - they are normally set for 220V out of the box.
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ Twitter: @WD9EWK or http://twitter.com/WD9EWK
On Sun, Feb 10, 2019 at 6:29 PM Jim Sanford wb4gcs@wb4gcs.org wrote:
I have several RS35Ms and they have been trouble-free.
AFter an ARRL review several years back, I tried an SS-30. (The Astrons were significantly quieter than anything else that they tested.) No RF noise that I could detect. That said, I have not put a scope on the DC lines, but will when I get a chance.
I have bought several more SS-30s and had no noise problem with them. So, for Field Day and PA QSO Party, I carry a switcher. (Weight!!)
Good luck & very 73,
Jim
wb4gcs@amsat.org