Marc and Drew, Appreciate the feedback... Checking my PS is my first test. Will power off all circuits except the one to my shack that runs the AC to the PS. Then I'll A/B with radio on battery and on the PS. (PS air-gapped/unplugged when on batt). If it is the PS, I'll try to choke the I/O power leads first before doing anything else.
I've a strong feeling it is NOT the SS-30DV... My antenna is an 80m loop outside at 38-40 feet. Fed with 300 ladder to the 6:1 balun. Only 15-20 feet of coax total (LMR240-DB with N-Connectors) direct from balun to radio. Before I do anything beyond IDing culprits, I have to address other shortcomings first: 1) Insufficient service ground, 2) no shack ground, 3) no bond from non-existent shack ground to service ground. :( Knew I should have done those things BEFORE I went OTA... the mic/K3 is a huge distraction from my TO DO list. ;) 73, ______________________ Clay Autery, KY5G MONTAC Enterprises (318) 518-1389 On 6/20/2016 7:45 AM, Drew AF2Z wrote: > I do also have multiple turns of the p/s power cord wound through a > large toroid, just for good measure. I investigated the Powerwerx at > one time when I was having some RFI problems, comparing it side by > side with a linear supply, and just didn't find the ss-30dv to be a > problem. My main problem was the DSL modem, and perhaps copper phone > lines, now eliminated by Fios internet. > > 73, > Drew > AF2Z > > > > On 06/20/16 07:59, Marc Veeneman wrote: >> 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. ______________________________________________________________ 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
