[Elecraft] Another P3 Observation

[Al Lorona]

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