Jim, I have two Samsung monitors. One is a 23” 1920x1080 with one VGA and one HDMI input and the other is the 28” 4K display with one Displayport and two HDMI inputs. Both have switch mode power supplies and I have never been able to identify either as a source of noise on my Flex 5000, Flex 3000, FLEX 6300, SunSDR2 Pro, Sun SDR2 NANO, QX1R, KX3 or K3s.
I have been quite fortunate in this regard as they have both served me well. Michael Blake k9...@mac.com <mailto:k9...@icloud.com> > On May 11, 2018, at 4:44 PM, Jim Brown <j...@audiosystemsgroup.com> wrote: > > Great idea, Michael. But with one important possible gotcha -- virtually all > of the power supplies for monitors like this are switch-mode types, and > almost all generate RF noise. Several years ago, we were lucky to identify > several Samsung models that run on a nominal 14VDC, and that work fine on the > 12-14VDC that most of us have in our shacks (or on older linear 12V wall > warts). Most newer models run at higher DC voltage, so to kill the noise they > generate, we much find a suitable linear power supply for that voltage. > > BTW -- someone gave me a Samsung with touch controls because it was an RFI > nightmare -- the monitor itself generated lots of noise AND the display went > nuts in the presence of RF. > > 73, Jim K9YC > > On 5/11/2018 1:05 PM, Michael Blake wrote: >> Dennis, I use a Samsung display that has 2 HDMI inputs and allows the >> monitor to display 2 inputs side by side. You may even be able to find a >> monitor with 2 VGA inputs that supports PIP. VGA to HDMI convertor cables >> are plentiful as well. >> >> The secret is a 2-input display that support PIP. Mine is a current Samsung >> 28” 4K display and I run the Mac on one side and the Windows 10 NUC on the >> other, Works well. > > > ______________________________________________________________ > 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 k9...@mac.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
