I had a Samsung SyncMaster 24" which was very susceptible to RFI on 80M. It would turn off whenever I transmitted. The antenna is an inverted Vee, less than 1 wavelength from the monitor. I was able to stop this problem by wrapping 6 turns of the AC power cable around a big clamp on ferrite. (Thank you Jim, K9YC, AGAIN for your work on this topic!)
Coincidentally, around the same time, the "rfi" mailing list hosted by eHam/contesting.com discussed a related issue. Search for "TV turns on-off when TX" at http://lists.contesting.com/pipermail/rfi/. My Samsung failed last month, and I chose to replace it with a Dell U2412M, which does not have the capacitive-touch switches. I left the common mode chokes in place, and it's been fine. FWIW. 73, Steve NN4X On Fri, Feb 10, 2012 at 7:23 PM, David Christ <[email protected]> wrote: > I have received enough replies to report the trend. With one > exception no problems were reported. The list of brands was most of > the mid to major names such as Dell, LG, HP, Acer, ViewSonic, Planar, > ASUS. > > The exceptions were Samsung. Not all Samsung monitors were reported > as problematic. Many were OK. An older one had display problems > when the user was on 80. This may or may not have been the result of > RF in the shack. No way to tell. It seems the one to avoid is > Samsung models with soft of virtual buttons. These could be > activated during transmission. Units with real buttons seemed to be > OK. > > There are some mystery brands out there that were not mentioned so no > conclusion for them can be drawn. > > Bottom line: It appears that if you stick with recognized brands and > avoid trick things like soft buttons you should be OK. However there > are no guarantees. > > Thanks to all, > > David K0LUM > ______________________________________________________________ > 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 ______________________________________________________________ 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
