Markus,

your "howling" was received and decoded successfully last night for a short

period around 03:58 UT:<

Congratulations! Looking at the file you sent, I think that the audio level
should have been higher. Note that the "pm" values are all in the single
numbers, which is quite low. Before the GUI version was available, I
typically set the audio level in recording a .wav file to about 6 dB below
clipping. That level would of course be dominated by noise, with the very
weak "wanted" signal being many dB below. You will know that you have
exceeded the limits of the detector when the "pm" values increase in steps
of 4096 from line to line. So you might have had better copy last night with
the gain (or Windows slider) cranked up.

Good job!

John Andrews