Re: [Discuss-gnuradio] Waterfall display in uhd_fft

[Marcus D. Leech]

On 01/03/2016 06:14 PM, Daniel Marlow wrote:
> Hello,
>
>    We are running gnuradio v 3.7.8 on Ubuntu 15.08.  H/W is B210.    We are 
> looking at our self echo from EME (moon bounce).
>
>    When running uhd_fft, we see clear EME echo signals on the FFT display (10-20 db above 
> the noise).   However, we don't see these signals on the waterfall display.  We do see 
> the very large signals when we transmit.    Is there a way to adjust the 
> "vertical" range of the display so that the noise is mapped onto something 
> black or nearly so and signals 20 db above the noise appear as bright colors?
>
> Sincerely,
> Dan Marlow
>
>
>
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If you use the middle mouse button, a menu pops up, and you can set the 
dynamic range using the "int. max" and "int. min" controls, also,
  if you use Channel0->Color Map, you can set the map that's used.