Lyle, I have been noticing the same things. There are a lot of signals with that characteristic low frequency rise. And as low frequencies rise, intelligibility and punch fall.
But not only phone signals... one can see -- at suitably narrow spans-- which CW signals take up more spectrum than others. Here, the P3's peak hold feature helps to exaggerate the differences between signals. There are some CW signals out there that are real spectrum hogs, thanks probably to the too-sharp transitions on their keying waveforms. This defect is easily seen with the P3. Al W6LX ________________________________ If you tune into these signals and listen to them, you will usually find that the "flat spectrum" speech has more dominance but still has good fidelity. 73, Lyle KK7P ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
