Hello everybody 🙂
After many hours over the last few evenings, I was able to fix the errors regarding VHF 1 & VHF 2. Now both of these are working without problems on my end. I have removed all other functions (ADF, ILS, etc.) from the script because I don't need them.
But I think most people only need VHF 1 and VHF 2. Maybe in the future I will take a look at those functions.
After spending these hours trying to fix the errors, I gained some experience with SIOC scripting and the corresponding FSUIPC offsets.
If anyone is interested in the working SIOC script, please send me a PM and I will send it to you together with a short instruction on how to use it.
Best regards,
Jonas
P.S: Thanks again @Linguini and @John Dowson for your help and insights. @John Dowson you were right by the wrong offset - The Software is using the wrong offset and also the wrong format for the frequencies. Thanks a lot for your help!