Chris,
Thanks for the additional, detailed information on the 801 and 819 "beehive"
jammers.
<<< As for the signal that Paul posted, as I mentioned to him when he first
posted, that video game sound is 819 Pyongyang, not a Seoul jammer. KCBS plays
that during their off-air hours after 3:28am until 5:15 or so. >>>
Thanks. Since the "video game" sound is from 819-KCBS anyway, this saves me
from listening through multiple 819 MP3's trying to track it down as a Southern
jammer. It did seem kind of odd to me that the South would be using both a
"beehive" and a "video game sound" on 819 to block Pyongyang.
<<< In addition, 801, depending on changes they are always making, has
usually come from the Hwaseong transmitting site. That site was home to tests
for the 657 jammer that were on/off for some time, as I had reported back then
in May 2016. They were doing test loops for it at varying powers and on/off, 42
seconds off, 1 min 42 sec. on, repeat throughout the day. The tests you hear
were recorded in suburban Ansan and were part of what eventually resulted in
their final jammer pattern they rolled out 6 months later. Of course, I don't
think that the on/off type of pattern you noticed could be attributed to this
sort of thing, but it was still something that came to mind that I figured I'd
share again out of boredom. >>>
The 801 "beehive" jammer only showed up in about half of the 801-Pyongyang BS
recordings, and when it did, it had an on-off cycle of about 3 seconds. By
contrast, the 819 "beehive" was continuous (during the rare times that it could
be heard under the KCBS monster signal).
Gary
> On December 25, 2017 at 9:58 AM Chris Kadlec <[email protected]>
> wrote:
>
>
> The Seoul jammers aren't very strong at all and are meant only to cover the
> metro area, which is home to half the nation's population with the suburbs
> butting up against the border. 30 miles south of the city, those jammers are
> already rather weak and even in the metro area (and especially Incheon),
> North Korean signals can easily get through the jammers. I estimated that
> most of them are only about 50kw tops.
>
> As for the signal that Paul posted, as I mentioned to him when he first
> posted, that video game sound is 819 Pyongyang, not a Seoul jammer. KCBS
> plays that during their off-air hours after 3:28am until 5:15 or so. The
> beehive jammers, as we've started calling them, change over time depending on
> which elements of the sound they are using at the time or if all the
> jammer-makers (for lack of a better term) are operating. There's the basic
> bee sound and then the the other sounds are added to that when everything is
> up and running and the modulation increased. This can be heard in my audio
> documentary. I've included the final 44 minutes of my 3-hour documentary
> here, which is the part that concentrates on jammers and propaganda (MW, FM,
> SW, TV, and numbers stations):
>
> http://www.beaglebass.com/temporary/IRCA_jammers.mp3
>
> The part about components of the "beehive" jammer can be heard starting
> around the 9 minute mark. The full documentary (and the transcript of the
> propaganda segment) is at http://www.beaglebass.com/dx/seoul/ which has now
> been online for a year with 2,500 visits.
>
> In addition, 801, depending on changes they are always making, has usually
> come from the Hwaseong transmitting site. That site was home to tests for the
> 657 jammer that were on/off for some time, as I had reported back then in May
> 2016. They were doing test loops for it at varying powers and on/off, 42
> seconds off, 1 min 42 sec. on, repeat throughout the day. The tests you hear
> were recorded in suburban Ansan and were part of what eventually resulted in
> their final jammer pattern they rolled out 6 months later. Of course, I don't
> think that the on/off type of pattern you noticed could be attributed to this
> sort of thing, but it was still something that came to mind that I figured
> I'd share again out of boredom.
>
> http://www.beaglebass.com/temporary/657_ansan.MP3
>
> -Chris Kadlec
>
>
>
> Date: Sun, 24 Dec 2017 16:46:07 -0800 (PST)
> From: Gary DeBock <[email protected]>
> To: "America, Mailing" <[email protected]>
> Subject: [IRCA] 819 South Korean Jammer
>
> Chris and All,
>
>
> After reviewing some files from the recent Kona (Hawaii) DXpedition I was
> able to track down a recording of the Southern jammer attempting to compete
> with the monster 819-KCBS signal from Pyongyang. Even though the 819-Jammer
> may sound pretty strong in Seoul it definitely didn't bother KCBS very much
> in Kona.
>
>
> The 819 jammer seems to be a continuous "Beehive" type signal similar to the
> old 1053 jammer. Because of the overwhelming strength of KCBS it only shows
> up during Pyongyang's fades, and even then it sounds pretty wimpy by
> comparison. This recording was made around 0853 on 12-18, and the jammer can
> be heard mixing with KCBS from 22 seconds to 40 seconds into the MP3
> https://dreamcrafts.box.com/s/1ueov463q72ht02yq6zi5kcyidnwc4n9
>
>
> By contrast the 801-Jammer seems to be an intermittent Beehive signal, coming
> and going at irregular intervals, and on a 50% on-off cycle when it does show
> up.
>
>
> Gary DeBock (in Puyallup, WA, USA)
>
>
>
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