They're called key clicks...nice to be able to SEE them now :>)

73, Guy.

On Tue, Sep 7, 2010 at 9:11 PM, Al Lorona <[email protected]> wrote:
> 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.
>
> AlĀ  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
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