Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revision | Last revisionBoth sides next revision |
| dwd-wefax [2022/02/25 19:36] – mm3iig | dwd-wefax [2022/02/25 21:42] – mm3iig |
|---|
| I am using [[https://github.com/AlexandreRouma/SDRPlusPlus|SDR++]] to drive the RSP1A. The audio output is routed through [[https://vb-audio.com/Voicemeeter/|Voicemeeter]], a virtual audio cable application. [[http://www.w1hkj.com/|FLDigi]] is used for decoding the signal after it exits the virtual audio cable. | I am using [[https://github.com/AlexandreRouma/SDRPlusPlus|SDR++]] to drive the RSP1A. The audio output is routed through [[https://vb-audio.com/Voicemeeter/|Voicemeeter]], a virtual audio cable application. [[http://www.w1hkj.com/|FLDigi]] is used for decoding the signal after it exits the virtual audio cable. |
| |
| I have adjusted the settings for the Wefax decoder in FLDigi to make sure that it auto-starts, has automatic frequency control turned on, and I have adjusted the shift to make sure it matches the expected +/- 425 Hz for the black/white tones. Another thing to change that may help is Correlation Rows to the maximum allowed, which is 50. This helps images with large white borders before the content kicks in to not get stopped too early by the software's image processor. The setup for DWD is below, but other services may have a slightly different shift - check first! You can measure this with the waterfall in FLDigi. The vertical lines should line up with the lines of your filter which can be moved by on the waterfall clicking with your left mouse button. | I have adjusted the settings for the Wefax decoder in FLDigi to make sure that it auto-starts, has automatic frequency control turned on, and I have adjusted the shift to make sure it matches the expected +/- 425 Hz for the black/white tones. Another thing to change that may help is Correlation Rows to the maximum allowed, which is 50. This helps images with large white borders before the content kicks in to not get stopped too early by the software's image processor. The setup for DWD is below, but other services may have a slightly different shift - check first! You can measure this with the waterfall in FLDigi. The signal’s vertical lines should line up with the lines of your filter which can be moved by clicking on the waterfall clicking with your left mouse button. |
| {{ :fldigiwefax.png?direct |}} | {{ :fldigiwefax.png?direct |}} |
| |
