[Elecraft] P3 TX Mon Usefulness?

[Alan]

On 08/12/2015 03:20 PM, Jim Brown wrote:

> Besides, the time domain (rise/fall times) is the wrong way to look at
> keying. The only effective way is in the frequency domain, where the P3
> with SVGA can resolve to a few Hz when set for narrow scan widths.

A spectrum analyzer is the best way to tell *if* something is wrong, but 
a time-domain display of the modulation waveform is the best way to 
determine *what* is wrong.  You can easily see if the key clicks are due 
to too fast a rise time, too fast a fall time, incorrect key shaping, 
flat-topping in an external amplifier, insufficient bias in the 
amplifier, parasitic oscillations, etc.  With a spectrum analyzer you 
can only tell that the clicks are there, not what is causing them.

Alan N1AL