[Elecraft] KPA500 Power In Digital Modes

[Jim Brown]

On Tue,11/11/2014 2:33 PM, Joe Subich, W4TV wrote:
> PSK31 on the other hand *can not* withstand *any*
> compression without significant close-in IMD. 

I don't know where you got the idea that I was suggesting compression 
for PSK31. My testing with pink noise is intended to simulate speech, 
and I tested with and without compression.

It's raining, which stops antenna work, so I set up PSK31 measurements 
this afternoon. Here's a link to the data. Note that I used PSK-D mode 
-- internally generated by the K3.

http://k9yc.com/P3SpectrumMeasurementsSlides.pdf

Note that, except at full power, PSK31 is significantly narrower than CW.

73, Jim K9YC