Log: AM broadcast band, March 10th, good trans-pacific reception

Although I was making an SDR recording, I also worked this one live. Activity was already in progress when I started a little before 1200 UT (5am MST), and this turned into quite good reception. It started out mostly on the low-end of the band, but the upper-end kicked in by around 1225 UT. The best activity was during the 12UT hour, with a decrease near the end of the hour. Some stations were doing pretty well after 13UT, including 1566 HLAZ out of Korea, but in general activity wasn’t very good then. Activity totally fizzled out by local sunrise at 1347 UT (6:47am). The real surprise was the strength of 1134, presumably HLKZ out of Korea, producing brief bursts of fair audio. First a summary, then some audio samples.

Good audio: 1566
Fair audio: 747, 774, 1134
Weak audio: 693, 828, 972, 1422, 1557, 1593
Marginal audio: 558, 567, 594, 1053, 1197, 1287, 1386, 1413, 1575
Carriers (mostly weak): 603, 819, 864, 873, 1008, 1143, 1188, 1206, 1224, 1242, 1278, 1314, 1332, 1521, 1546, 1584, 1593, 1602, and maybe more

A sampling of audio:

First, these are simultaneous recordings of two NHK 2 affiliates out of Japan, 747 JOIB and 774 JOUB, respectively. The recordings start at 11:51:00 UT, and represent the rather sedate program before the English lessons started.

At one point early in the 12UT hour, I had the NHK 2 English lessons simultaneously on 693, 747, 774, and 828!
Here is 693 JOAB at 12:03:50 UT:

And, 828 JOBB at 12:10:15 UT:

And, 774 JOUB again at 12:41:55 UT at a fair level:

Again, 1134 was the surprise hit of the morning, and here is audio starting at 12:37:15 UT, occasionally briefly rising to fair levels:

As far as signal strength and audio, 1566 HLAZ was the star of the morning, producing tens of minutes of fair audio, with a few brief forays into good audio. This would have been much better, but 1560 KNZR was clobbering 1566 with splatter, and 1570 was occasionally problematic.

Finally, another unusually strong signal from 1422, presumably out of China, producing bits of weak audio. This is extra special because I’ve been using a homebrew filter to wipe out my local 1450 and 1490 stations, and the signal is down about 10dB at this frequency:


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