1521 kHz 25 Sep 2015

[ChrisSmolinski]

There are two, well, actually three, carriers visible on this recording:
There's one that goes off the air at 0300z, apparently this is when Saudi Arabia signs off? http://www.mwlist.org/mwlist_quick_and_easy.php?area=1&kHz=1521

That reveals another carrier under it, which then fades out just before 0600z.

Finally there is the third carrier that is on from before 0200z to fade out around 1030z, close to local sunrise. Who is this? It can't be a European, their local sunrise was hours earlier. I can't see how it would be from Asia or the Pacific, it is still daytime there at 0200z. At 0200z it is just dark on the US west coast.

[Kilokat7]

Did it sign off at 1030?  It looks like a rather abrupt drop out on the image as opposed to a gradual fade-out.  Are you able to "stretch" the time out between 1000 and 1100 UTC for a closer look?

[ChrisSmolinski]

I can't easily stretch the time right now, but that's a good idea for something to add to the app. As of now each line is 30 seconds of time.

Here is 1521 from this morning's recording. It shows what I assume is the same station, plus another. I adjusted the contrast a bit better: