Korean beacons popping up everywhere
 

It seems all over the HF spectrum I hear these HL* beacons:
http://freebsd.tfcis.org/~lusitani/d...l/20030809.txt
12840 CW cq cq cq de hlo hlo hlo qsx 12mhz k
12913 CW cq cq cq de hlf hlf hlf qsx 12mhz k
12920 CW cq cq cq de hlw2 hlw2 hlw2 qsx 12mhz k
12932 CW cq cq cq de hlg hlg hlg qsx 12mhz k
with the same message, even when not on 12kHz. I'm in Taiwan. Do
others hear them all over the HF dial too or is it just images? If
not, why do they need so many beacons? What are they used for?