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All I know is I have heard it with my own ears, and seen it with my own eyes
and it will wreck HF for me. I don't care how much theory or alleged science you want to try to wrap around the BPL issue, it won't solve my personal loss if it becomes the ISP of the future. So I will keep sending my money to the ARRL and I will encourage them to work towards keeping my hobby fun. 73 "Jim Nye" wrote in message ... The claim that BPL will seriously and negatively impact amateur radio is simply fear, uncertainty, and doubt (FUD) spread by the ARRL. That organization needs to justify its existence, and the BPL issue is a convenient way for it to show its activism. The ARRL has apparently followed the path of other self-justifying organizations such as NOW and the NAACP. Unfortunately, the technically unsophisticated do not recognize the difference between coherent and non-coherent noise, and this makes it easy for the ARRL to spread its FUD. But the fact is that, if BPL signals are heard at all, they are coherent (have a predictable phase and amplitude) and therefore can be completely removed at the receiver. This can be done in many ways, most of which amount to nulling the BPL signals by introducing an identical signal which is 180 degrees out of phase with the original. As a matter of fact, most current HF transceivers have what they call a "noise reduction" option already built into them which uses the nulling method to accomplish its goal. Therefore, many amateurs and SWLers already have the needed equipment to deal with any BPL "interference." The ARRL reports have conveniently omitted any mention of the coherency issue, and their measurements are therefore flawed, because they don't reflect real world situations. So take the ARRL claims with a large grain of salt, and don't succumb to the FUD they are spreading. Instead, do some reading on your own by going to non-ARRL web pages such as http://www.uplc.utc.org, and http://www.wave-report.com/tutorials/bpl.htm before accepting the ARRL claims at face value. |
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