On 2/8/2020 19:58, David Eckhardt wrote:
If things are designed and executed properly with EMC/RFI in mind, there
should be no need for these clamp-on ferrite 'beads'.
SOME kinds of home electronics devices have gotten better. 25 years ago,
my YL bought a fairly expensive electronic piano. Despite several pounds
of ferrites on the power cord, I still wiped it out. Then, a couple
years ago, she bought a new one. No external ferrites. I've tried my
best in many contests, but I can't make the thing flinch. (She often is
practicing when I'm operating. I'd hear about it.) It's a different
brand (Kawai now, Yamaha then). I'm a bit puzzled by that, actually: Why
would an electronics manufacturer go to the trouble of making something
that RF proof, when so few of their customers have a transmitter that
close? Not that I'm complaining.
Other home electronics devices seem to have gotten better, too. Now, if
only they'd do something about those switching supplies!
73,
Scott K9MA
--
Scott K9MA
k9ma@sdellington.us
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