This morning's discussion of digital flat screen TVs included a mention of plasma TVs as a source of RF noise that can affect HF radio. An article with comments from 2002 describes this issue. Thanks to KB4XX for this link.
The ARRL hosts an RF noise page that includes audio recordings of various identified noise sources, along with waveform views. There is not one currently labeled as a plasma TV, but there are some entries for TV sets as noise sources.
If you or your neighbors buy plasma TVs and you notice an increased noise level across the HF bands, you may want to see if the noise correlates to operation of the plasma TV. Good luck!
