Beware ground loops! 73,
Scott. K9MA ---------- Scott Ellington --- via iPad > On Jun 20, 2016, at 12:21 PM, Clay Autery <[email protected]> wrote: > > Thanks... > > One of my goals is to completely eliminate wall warts in my shack. I > planned to use a nice quiet multi-voltage output PS(s) and/or buck/boost > converters (or other circuitry) to supply power to every device in the > shack.... reducing the clutter/complexity/potential culprits. > Now, I am considering modifying that plan to battery(ies) with quiet > charger(s) and circuitry to provide required voltages for all devices. > Then move out and do the same for the home network, and all other DC > devices... > > ______________________ > Clay Autery, KY5G > MONTAC Enterprises > (318) 518-1389 > >> On 6/20/2016 12:06 PM, G4GNX wrote: >> FWIW I still have a few issues with RFi, but I've managed to cure two >> of the major ones, the rest are a matter of finding time. >> >> At present, I'm running an MFJ 1500W auto-tuner which needs a 12V >> supply for the display, logic and relays. I had a massive drifting >> "birdie" on 40 metres, but it didn't always appear on the same >> frequency. I found that it shifted frequency with minor changes in >> load, caused by using different relays within the tuner. I replaced >> the switch mode PSU and all is now good. >> >> The second major issue was mainly on 2 metres, but there were also >> sprogs on other bands. This turned out to be a PC PSU which despite an >> application of ferrite rings, would not lie down! I found that if the >> PC was put into 'sleep' mode, it would go quiet. I finally replaced >> the PSU - problem solved. >> >> Just a few thoughts on what you might look for. >> >> 73, >> >> Alan. G4GNX > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
