On Wed, 18 Dec 2024, 20:01 dj7ww@t-online.de, <dj7ww@t-online.de> wrote:
> I use 2µF and no choke with my 3-phase DB6 power supply and nobody hears
> any hum.
Very interesting.
Have you ever measured the ripple? If so, what is it?
If you haven't, please give some details of the PSU so I can guesstimate
it. What AC/DC voltage and current do you use, is it a normal 3 phase full
wave rectifier (50 or 60Hz?) or something else (like a doubler, or half
wave etc).
Also, have you had a chance to see a waterfall of your SSB signal? I wonder
if the correspondents can't hear it has to do with the fact everything
under 300Hz is cut off on their end, or there is no hum transmitted? An
waterfall would show any 200Hz peak.
>
>
> Check with Dr.Alex if you need larger capacitors:
> http://www.ur4ll.net/#caps1
Thanks, I've got plenty, but no doubt someone else might need it.
73,
Łukasz - SP4IT
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