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Very much from the sidelines, it seemed to me that North Korea, not China, as
Gary has been assuming, would be the source of jamming upon FEBC 1566.
Thread from a different source, WTFDA-AM, seems to confirm this altho does not
deal with the jamming being limited to the half-hour Japanese service:
73, Glenn Hauser
Heck, the signal isn't even that clear in Seoul, but then it's got 1566
Pyongyang and Yanbian that destroy it. It was always clear last fall, but then
when Pyongyang came back on and then Yanbian as well (both were off for an
extended time), it was pretty much useless, though it depended on which way
HLAZ was aiming. They were typically strongest with Chinese programming at
night as well as the Russian programming. And it does sound like the most
faintest hint of Pyongyang heard under HLAZ there. It could be just in my head,
but the pattern of that background noise behind HLAZ just has that familiar
sound to it (Chris Kadlec, Seoul, Korea, Sept 23, WTFDA-AM Forum via DXLD)
Gary and I have spoken lots since he wrote that. He was mistaken, using
information from another person who was mistaken as well since nobody was DXing
locally from on the ground as I was.
The signal was originally assumed to be from Yanbian, but I disproved that when
Yanbian's signals all came back on the air suddenly after a good 6 months off
the air. Now, Yanbian People's Radio was on 1566 clobbering Jeju while the
jammer was interfering with both of them. Since the jammer was assumed to be
coming from Yanbian... yet Yanbian was... coming from Yanbian, that logic
doesn't fly.
Instead, the 1566 jammer is almost certainly originating from the tower site in
Anak, North Korea. It's a laser jammer that is // 1467 Pyongyang (Anak), as
I've shown in some clips in the past
http://www.beaglebass.com/dx/external/Jammers_1467_1566.MP3
(1566 vs. my local 1467 Pyongyang jammer), though it is harder to hear the
laser tone on 1566 with the other signals there, but it is parallel.
Meanwhile, this is what 1566 sounds like in Seoul now.
http://www.beaglebass.com/dx/external/Seoul_1566.MP3
Jeju (stronger Chinese) is 279 miles to the south, the jammer is 85 miles to
the north, and the weaker Chinese is Yanbian, 390 miles to the north. Both the
jammer and Yanbian had been off the air for quite some time, so Jeju was a
solid signal prior to that, but at times the frequency is unlistenable now.
The jammer on 1566 runs all night from before skywave even starts until it
disappears sometime in the early morning (perhaps when skywave ends). It blocks
Jeju's Russian, Japanese, Chinese, Korean, etc. programming, so it's targeted
basically as a 24/7 station to wipe it out. As you probably know, religion is
banned in North Korea and that's what FEBC is. The only thing that they block
more is KBS 1 (Chris Kadlec, Sept 29, ibid.)
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