waterfall with DC spike- how to block it

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joseph

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Nov 27, 2025, 6:00:46 AMNov 27
to SkyRoof
Hey you people out there..
Wonderfull program isn't it, but...

Changed my rx from airspy to rtl-sdr.
Now i have that famous dc spike in the middle of the waterfall.
Looked in the manual and the settings, but can't find a solution to get
rit of it.
Who can pinpoint me to a solution?

Thanks in advance.
Joseph

DaveNF2G

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Nov 27, 2025, 12:07:50 PMNov 27
to SkyRoof
Exactly how depends on what software is running your RTL-SDR, but the solution is to enable Invert I/Q.
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