My PowerWerx supply DOES generate those drifting noise spikes, ruining CW on 80 meters for me. I have yet to find a 13.8 volt switching supply that can provide 25 quiet amps. I've gone entirely to batteries rather than use quiet but inefficient linear supplies.
Now I only have SMPS noise when recharging the batteries. So I leave that for non-hamming hours. More testing is needed, but I did find one SMPS for LiFePO4 batteries that seemed RFI free. It's an Optimate brand product but only produces 5 amps. -- Marc WW8SDG > On Jun 20, 2016, at 7:45 AM, Drew AF2Z <pu...@af2z.net> wrote: > > I have a Powerwerx SS-30DV also. I think it is unlikely that this PS would > put out that kind of trash. I've found it to be very quiet even listening > with an endfed wire antenna within inches of it. > > 73, > Drew > AF2Z > > >> On 06/20/16 01:38, Clay Autery wrote: >> That's what I figured... Now to locate which one of the 50+ that are >> present in this house alone... >> >> They actually appear all the way down into the 14MHz range... Always >> there. Tonight they were relatively stable in location... drifting >> slowly, and even changed directions once. At other times, the cyclical >> migration up or down the band is faster and sometimes random, switching >> directions repetitively and without discernible (to me) pattern. >> >> Off to read... Hopefully it is not the power supply I use for the K3s/P3... >> >> >> 73, >> >> ______________________ >> Clay Autery, KY5G >> MONTAC Enterprises >> (318) 518-1389 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to mveene...@yahoo.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
