Thanks for all the comments so far. I will try the doubler with another quieter source, and try removing various potential noise-sources and exchanging cables...
I have now uploaded a few more images of the same data to the shared album linked in my earlier post. Anders On Thu, Jan 19, 2017 at 10:39 PM, Bill Byrom <t...@radio.sent.com> wrote: > I see spurs at 50 Hz and harmonics, which I assume are from the power > line at your location. This might be due to an oscillation in the power > supply regulator, leading to nonlinear regulator operation and > feedthrough of power line ripple. For example, low dropout regulators > can sometimes oscillate when an additional ceramic bypass capacitor is > added due to decreased phase margin in the feedback loop. It's also > possible that there is too much ripple before the regulator and you are > exceeding the dropout voltage, or that the regulator is going in and out > of an overcurrent condition. Many odd things may happen if the power > supply regular isn't working properly. > > > -- > > Bill Byrom N5BB > > > > > > > _________________________________________________ > > > time-nuts mailing list -- time-nuts@febo.com > > > To unsubscribe, go to > > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.