Without knowing more about your receive setup, there is no way to tell just 
based on your screen shot that what is happening is on the transmitting 
stations side. 

> On Jun 30, 2017, at 6:40 PM, Pino Zollo <pinozo...@gmail.com> wrote:
> 
> I miss a way to notify a distortion on the emitted signal.
> 
> e.g. see the attached image with 4 or more decoding spectra.
> 
> I have seen other types of distortions:
> 
> 2nd an 3rd harmonics all decoding
> 
> 2n and 3rd harmonic do not decode because the spectrum is X2 or X3 wide.
> 
> A shadow spectrum on the left side of the principal one which partially
> covers the main one.... (possibly due to tubes linear amplifier)
> 
> 
> ....
> 
> Can we think to a single digit number to tell it to the other station ?
> 
> 
> Best 73
> 
> Pino ZP4KFX
> <jt9-distorsion-1.jpg>
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