SDR# TETRA demod plugin version 1.0.14.0
dotPeek
Visual Studio 2022
NET upgrade assistant

Reverse-engineering with dotPeek to VS project
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NET upgrade assistant
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Visual Studio 2022
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Plugin displayname change
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Rebuild solution. NET 7 assembly is located in net7.0-windows directory. SDRSharp.Tetra\bin\Release\net7.0-windows

SDR# version 1910
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For the newer (obfuscated) versions of the TETRA demod plugin one can try to deobfuscate by using e.g.
de4dot, dnSpy and de4dot-cex to get code at level which is buildable with VS (and upgradeable to .NET7).