A rare victory by a shortwave radio over interference from a plasma television.

Posted: 26 Feb 2010   Print   Send a link
"A case of radio interference caused by a Plasma TV provides a good example of how interference issues should be addressed by a regulator. A German TV station carried a news report that described how radio amateur Gerhard Peuser DL3OCL found high levels of noise on his short wave radio which was making reception difficult. He used a portable radio to find out where the interference came from and reported it to BNetzA (German Regulatory Authority for Telecommunications, Postal Services, Railways, Electricity). ... The BNetzA undertook measurements on the TV and the owner got a letter banning him from using the Plasma TV or else he would get a fine. The manufacturer of the TV denied the interference but they did supply the customer with a TV of a different model." Southgate Amateur Radio Club, 24 February 2010. Plasma-display television sets are among the worst of many modern electronic devices that cause interference on the shortwave frequencies. This interference is probably one of the reasons for the decline of shortwave listening. See, for example:
     "A lot has changed since I began [shortwave] DXing in 1962: equipment, locations, me, the world, broadcasting itself. Some of these changes were for the better (most change is, whether we like it or not); others, however, have worked against me. Noise, for instance. I’ve been battling local RFI [radio frequency interference] for decades. Now, noise is simply everywhere, all the time, and it has won; I can’t very well go to all my neighbors and ask them to unplug their plasma TV’s, their home security systems, their in-home powerline networking. Over time my RF noise floor has gradually risen to a level that has made real DXing impossible. Without DX, and with additional gremlins (CODAR, or DRM, anyone?), I haven’t been listening much lately. Not much at all." Al Quaglieri, resigning as editor of his Listener's Notebook column, North American Shortwave Association, September 2009, via DX Listening Digest, 3 September 2009.