http://www.rbr.com/ ©2007 Spoonlabs d.o.o. Vivvo CMS 4.1 2012-02-11T22:01:56-06:00 http://www.rbr.com/features/intel_briefs/22062.html 2010-03-08T08:27:00-06:00 2010-03-08T08:27:00-06:00 Carl Marcucci In Part I, we explained the origin and inner workings of the NPR Labs power increase formula.  The January 27, 2010, FCC Order provided a http://www.rbr.com/features/intel_briefs/22062.html 2010-03-17T08:41:45-05:00 2010-03-17T08:41:45-05:00 Brad K I believe readers of this article could be misled into thinking that operating in MP3 mode negatively impacts the S/N of the first adjacent station compared to MP1 mode. I would ask one to read section 7 of the AICCS Report (NPR Labs) This section is clearly discussing the S/N impact to the host station itself and not the first adjacent station. The allowable IBOC power formula clearly only refers to determining interference impact to adjacent stations. In MP3 mode the extra ODFM carriers operate closer to the host station's analog signal and will only negatively impact the analog S/N of the host station's audio particularly in stereo mode. For these reasons, the interference protection formula does not need to be modified for a station operating in MP3 mode. http://www.rbr.com/features/intel_briefs/22062.html 2010-04-15T10:58:13-05:00 2010-04-15T10:58:13-05:00 Mike Huntley Mr. Shumate,In the "Comments" section of your article, you mentioned the example of a commuter losing analog reception of his station due to a first adjacent IBOC station switching from MP1 to MP3 mode. Can you explain how adding digital carriers farther away from the desired analog station than the existing digital carriers would suddenly cause loss of the desired analog signal. I can easily see that it can impact the host IBOC station's analog S/N ratio because the carriers are closer to the host station's analog center frequency, but your article while detailed does not show how this would increase the impact the analog first adjacent. Please clarify.Mike Huntley http://www.rbr.com/features/intel_briefs/22062.html 2011-01-05T08:52:17-06:00 2011-01-05T08:52:17-06:00 earbuds I am of the view such drastic steps will seriously affect the popularity of radio. I am working in New York and every day I will be driving nearly 55 miles to reach my office. I will tune in to my favorite station and it helps me to keep myself awake during the journey. I really wonder what I should do now for the purpose. http://www.rbr.com/features/intel_briefs/22062.html 2011-01-24T07:25:39-06:00 2011-01-24T07:25:39-06:00 Earphones I believe readers of this article could be misled into thinking that operating in MP3 mode negatively impacts the S/N of the first adjacent station compared to MP1 mode. I would ask one to read section 7 of the AICCS Report (NPR Labs) This section is clearly discussing the S/N impact to the host station itself and not the first adjacent station. http://www.rbr.com/features/intel_briefs/22062.html 2011-03-03T11:45:24-06:00 2011-03-03T11:45:24-06:00 pure dmaa be misled into thinking that operating in MP3 mode negatively impacts the S/N of the first adjacent station compared