Hi Rainer,
It sounds like you've been busy! Hopefully you'll find a suitable transmitter somewhere, soon.
I am curious, though. You reference the correct configuration file MetScat:MJMM.USR, but your Spectrum Lab screen isn't set up in the same configuration as mine. On mine the frequency scale runs up and down the right hand side of the screen and the time-lines march on from right to left across the screen, whereas your frequency scale runs across the top and time downwards. Did you set it this way on purpose? To check this further, I set my Spectrum Lab App back to 'factory settings' as you would have received it and then I installed the MetScat:MJMM.USR configuration file and everything transformed to the configuration I've described above for my setup, so if you've followed these steps, then your screen should look like mine.
Just for clarity, this is the sequence you need to follow to configure Spectrum Lab:
This is the configuration after factory re-set (you don't need to do this, I'm just showing this as an example). You'll see this is very different from the final required configuration for this project.
- Factory reset_Spectrum Lab.jpg (259.33 KiB) Viewed 2810 times
To reconfigure using the MetScat:MJMM.USR file, select 'File' from the toolbar and 'Load Settings From'
- Uploading _Spectrum Lab.jpg (170.71 KiB) Viewed 2810 times
Then select the MetScat:MJMM.USR from wherever you saved it and click 'Open'
- Configuration File Selection _Spectrum Lab.jpg (200.09 KiB) Viewed 2810 times
Spectrum lab will then totally reconfigure the screen (and all the 'internal' settings), so that it is ready to analyse the signals from the SDR app.
This is how it should look:
- Reconfigured _Spectrum Lab.jpg (231.43 KiB) Viewed 2810 times
Just be sure to check that it has the correct 'Input' set under 'Audio I/O', which should be 'CABLE Output (VB-Audio Virtual...), which is a bit confusing as it has the word 'output' when it it describing the input. Anyhow, if you follow these steps then the screen and everything else should be set up accordingly.
Stu.