Re: [Elecraft] ARRL Lab reports suggestion
On 10/9/2020 10:39 AM, Walter Underwood wrote: Every time I see one of those plots from the ARRL Lab, I wonder “what is a good number?” I really wish they would add some additional lines to the graph. One suggestion: * FCC regulated limits (where they exist) * 90th percentile (best 10%) of tests in the previous five years * Best test in the previous five years Some of that information is in my summary of ARRL Lab tests. FCC limits are not expressed well for those who deal only with numbers. What SHOULD be the dominant paragraph says that the bandwidth of a signal shall be the minimum required for the means of transmission. In practical terms, that means carefully shaped CW keying, minimum phase noise, minimum IMD. It's essentially a "state of the art" spec. But because there are no numbers attached, the paragraph is widely ignored. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] ARRL Lab reports suggestion
> On Oct 8, 2020, at 8:07 PM, Jim Brown wrote: > > Also see my detailed analysis of ARRL Lab tests of a selected number of rigs. > The raw data for my report came straight from ARRL Labs in electronic form. > Also see ARRL Lab plots of keying bandwidth and phase noise for Scott's radio. Every time I see one of those plots from the ARRL Lab, I wonder “what is a good number?” I really wish they would add some additional lines to the graph. One suggestion: * FCC regulated limits (where they exist) * 90th percentile (best 10%) of tests in the previous five years * Best test in the previous five years I think those would be a nice contribution towards the "Continuation and extension of the amateur's proven ability to contribute to the advancement of the radio art”, to quote Part 97. I guess I should be telling this to QST and the ARRL Lab, not this list, but does this sound like a good idea to others? Maybe Elecraft can publish these for the K4 to get the ball rolling. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
