Software

I spend a lot of time refactoring the software. It was getting a bit messy.
After cleaning up I added some functionality.

Now the frequency counter works. It can measure the center frequency. It is suppossed to work even when a sweep is in progress. This has to be tested.
I also made a regulator for the center frequency. It compares the actual frequency with the setpoint. I case of an error the software integrator is increased or decreased. This integrator value is send to a DAC. It works but I have to test it with the real tuner to be sure.

In the meantime I found an enclosure for the analyzer. I also drilled some holes for the controls.