Michael Black <mdblack98@...> writes:

**** Hi Mike:
> 
> Doesn't the "Flatten" box do that for you?

**** No. "Flatten" further distorts the spectrum display rather than 
smoothing 
the baseline.

> 
> I'm looking here right now at a JT9 signal with side lobes that has an 
11dB
> peak and -25dB on the side lobes which I can see on the Cumulative graph.
> So that's a 36dB difference visible and it has all the appearance of being
> clamped.

**** In my case - in a signal rich environment - a JT65 signal at -01 will 
not only "shoot up" from the baseline, but will depress the baseline down 
making weak signals not appear in the waterfall, though they will appear as 
pips on the spectrum display's trace.

> 
> Are you looking for more amplitude on the low level signals?  So doing
> another non-linear scaling would amplify the lower signal levels?
> 

**** I'm looking to see the weak signals appear on the waterfall display. 
They appear on the spectrum display, but a very strong signal will depress 
the entire spectrum display trace to a level below the threshold for 
appearing on the waterfall.

As is, the spectrum display provides a faithful representation of the audio 
bandpass from the sound card. I'd rather have an indicator of the presence 
of weak signals on both the spectrum and waterfall displays.

> Mike W9MDB
> 

**** 73 de Paul DU2/WA8UGN






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