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Author Topic: SDR# Waterfall  (Read 3148 times)

Offline K5KNT

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SDR# Waterfall
« on: March 15, 2013, 0305 UTC »
I decided to try SDR# running on Windows 7 in a VM on my iMac.  It seems to be working OK, but the background on the waterfall is yellow. It looks like yellow is a mid-value according to the scale on the right. It goes down to black, but it doesn't show up in the screen shot.  The color change in the background resulted when I switched to full screen mode.  Any idea what would cause this?
K5KNT

Offline Token

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Re: SDR# Waterfall
« Reply #1 on: March 15, 2013, 0456 UTC »
A couple of suggestions.

First select “Correct IQ” in the “Radio” pane (upper left).  This will not do anything for your noise issue but it will reduce the DC bias or LO spike in the middle of your display ;)

Then try adjusting the Spectrum “Offset” and “Range” slider under the “FFT Display” pane (lower left).  I would try the Range slider first, pushing it to the left a bit from where you have it.

Another suggestion, crank up the FFT Resolution (you have it at 2048 in that image, try 8k or 16k and see how that looks).  This will result in a smoother waterfall, with the data less blocky.

It also looks like the switch in resolution when you went full screen messed with the display, there may not be anything you can do about that excpet to not switch resolutions.

T!
« Last Edit: March 15, 2013, 0458 UTC by Token »
T!
Mojave Desert, California USA