I don't know about IOTA switching supplies, but my Newmar PM-12-70 switching supply causes birdies all through my HF gear here at home. I also used a bank of five brand new 12V batteries tied to a Vector VEC1093A battery charger instead of the Newmar, and that charger as well is a switcher that also caused birdies all through my HF gear. I should have kept my old 70 Ampere non switching supply. Oh well, a lesson learned.
Paul Metzger KQ6EH
