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Have you used an SSTV decoding application on an up-to-date version of macOS? Which one, and if you built from source, can you share the steps you took to do so?

I do not know of a single working macOS application for SSTV decoding. I've been playing SSTV signals over my Mac's speakers, captured with my RTL-SDR dongle, and using Robo36 on an Android phone to decode the image, as has everyone else I know, but this comes with additional problems. There have been instances of engine-noise (or even the occasional donkey bray) introducing unwanted artifacts in the decoded image.

Amin Shah Gilani
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3 Answers3

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MultiScan 3B works fine in terms of decoding. This being said I had some issues making it work with my external sound card for transmitting SSTV. For some reason transmitted images turned out to be cropped. I accidentally figured this out using cqsstv.com.

Eventually I ended up using a Linux laptop and QSSTV software. Still if you are interested only in decoding, MultiScan 3B should be OK.

Aleksander Alekseev - R2AUK
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MMSSTV seems to work well if installed using Wine.

BarryN
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I've been able to make Multiscan 3B SSTV decoder work on my older iMac with High Sierra (together with RTL-SDR USB dongle, FM decoded using CubicSDR and audio routed using Audio Hijack).

MultiScan 3B unfortunately fails to aquire any Audio Inputs/Outputs on my Big Sur box (showing only Item 1, Item 2, Item 3 which seems like Interface Builder placeholders that were by developer expected to be refreshed before user clicks those, but nothing happens on Big Sur). Code is unfortunately not open-sourced so only author can help.

Community
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igraczech
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