The Disco Palace @ 17875 kHz, 29 Sep 2012

Most weeks I tend to hear the same tracks over and over (like Grease Lightning, In the Navy), but the first song past 20:00 UTC was different.

Lately I've been seeing the signal frequently hit with brief but deep flat fading. When it does occur, it tends to be the dominant fading phenomenon.

In the fade that occurs at -27 s, a 2 second long interleaver isn't sufficient. Not only are most of the subcarriers wiped out over 2 seconds, to recover from it would require SNR to spike immediately after. In two more recent fades, this happens, but the fade itself isn't as long.

Like I mentioned at the beginning, when kind of flat fading happens, it happens frequently, and many times the interleaver isn't long enough to deal with it. Choppy reception ensues.