Dear Markus, LF Group,

Thanks for the screen shot from Sunday night

The appended clip shows four of your sequence repetitions, as seen in a high resolution 21 mHz FFT - of course not readable but still showing consecutive dashes as a line in the upper trace and a gap in the lower one. The emission appears to be phase coherent across symbols of the same type, but not across frequency switching. Apparently the shift does not happen to be an exact integer multiple of the symbol rate, and after returning to the original frequency the phase has lapsed by some amount.

Cheers, Jim Moritz