" RFI Eraser " : SDR# > IFavg > HL3D > Rinearn Software : Update

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Mar 8, 2026, 12:28:32 PMMar 8

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" RFI Eraser " noise reduction processing

has been added to the HL3D Java code.

It seems stable & effective, but I have a few more ideas for improvement.

Suggestion :

Process the data first with Filter Width = 0 to get an uncorrected baseline of your data

IF there are RFI spikes in the spectrum, try Filtering

Start with small filter width values, save the *.CSV file set & compare via Rinearn .

Over-correcting degrades the H data.

https://github.com/AP-HLine-3D/HLine3D/blob/main/JAVA_HL3D_mX%2Bb_RFI_V2.2_08Mar26_IFAvg2csv.jar

Alex Pettit

The graph contains 3 plot sets :

Uncorrected Data with RFI spikes

Small Filter Width correction results

Larger Filter Width correction results

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Mar 9, 2026, 9:13:09 AMMar 9

to 'Alex P' via Society of Amateur Radio Astronomers

Another Example

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Mar 9, 2026, 5:27:59 PMMar 9

to 'Alex P' via Society of Amateur Radio Astronomers

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Mar 10, 2026, 9:26:48 AMMar 10

to 'b alex pettit jr' via Society of Amateur Radio Astronomers

AND, of Equal Importance :

" RFI Eraser " only adds a bit of smoothing to an RFI Free Data Set

Un-Filtered RFI Eraser at minimum widths

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Mar 13, 2026, 1:03:43 AMMar 13

to Society of Amateur Radio Astronomers

Hi, Alex.

Nice results!

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