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]
