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East Asia AM Radio (Audio Bandscans)

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East Asia AM Radio (Audio Bandscans)

Post by cckadlec » Sun Dec 11, 2016 4:00 am

For those of you who are curious about AM radio on the opposite side of the globe, here is one of the first audio bandscan clips I've got as my one-year project comes to a (thankful) close, taken from Seoul along the North Korean border during skywave conditions:

Here is the Seoul AM band in the most condensed fashion possible: 90 stations in 10 minutes (edited down from 18 hours of recordings).

Listen here

My very detailed audio bandscans will be released at the end of this month after 14 months of work. The audio-only one will run around 100 minutes and the one with commentary at over 2 hours, one frequency and station at a time, so if you're interested in my condensed version here and want to hear more, I'll post the longer clips here in this thread at the end of this month with the AM listening guide PDF.

So for the ADHD listeners among us, please enjoy this one in the meantime. There are plenty of radio stories, IDs, baseball, music, and more, including some English content. And kudos to anyone who can name at least 5 of the stations in the compilation (of which are in no particular order)!

----------

12/18 Edit: This is the final 45 minutes of my 3-hour broadcast of East Asia AM radio (skywave as heard from Seoul, frequency by frequency).

Listen to the jammers and propaganda (45 min.)

This includes jammers and propaganda stations on TV, FM, AM, and SW, though the AM band is covered in the first 2 hours. Some stations covered include Voice of the People, Echo of Hope, Jayuui Sori, Jayu FM, and Korean Central Television, as well as a look at the sounds of more than 30 Korean jammers one frequency at a time.

At the end of this month, the first 2 hrs. 15 min. will be released with a 60+ page guide, broadcast transcript, and station map and all audio will be posted in a (somewhat) visible location. This project has taken 14 months to complete, so I truly hope you'll take the time to become educated on the radio wars on the Korean peninsula. And if you're busy now, this part will be included in the full broadcast coming soon, so do not fret!
Last edited by cckadlec on Sun Dec 18, 2016 11:28 pm, edited 2 times in total.
[ Radio and weather geeks, beware! Coastal tropo studies and the Seoul AM Radio Listening Guide documentary at http://www.beaglebass.com/dxTuner: Grundig G8 • Location: Fremont, Mich. / 101 mi. ene of Milwaukee ]

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Re: East Asia AM Radio (Audio Bandscans)

Post by RingtailedFox » Sun Dec 11, 2016 1:44 pm

I know this might seem slightly off-topic, but have you ever been able to do a transpacific DX of stations in Alaska or the West Coast of North America, or even Hawaii or Guam from your location in Korea?
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Re: East Asia AM Radio (Audio Bandscans)

Post by audiophile » Sun Dec 11, 2016 5:52 pm

Very cool!

I'm shocked at the about of english content.
Ask not what your country can do FOR you; ask what they are about to do TO YOU!!

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Re: East Asia AM Radio (Audio Bandscans)

Post by cckadlec » Sun Dec 11, 2016 8:32 pm

RingtailedFox wrote:I know this might seem slightly off-topic, but have you ever been able to do a transpacific DX of stations in Alaska or the West Coast of North America, or even Hawaii or Guam from your location in Korea?
Oh, that's entirely on-topic!! And the answer is "heck no!". I'm in contact with all the guys out west that regularly hear my Korean, Chinese, and Japanese locals daily about the same time every day. It's always amazing because the high-powered locals like my 500kw and 1500kw within 10-50 miles or so are easily overtaken by more distant stations, but they make it across the globe without any problem at all and a heck of a lot stronger too.

But the short answer is no, because the band is entirely and completely cluttered. While it's common to only receive the same stations every night, there may be 3 or 4 on each frequency that come in solid every night at the same time. None of the countries work together and they're all really close, so you'll have a 100kw station here and then a 500kw station 200 miles away, etc. It leaves little room to hear much. The only open frequency left is 1431. My location along the Yellow Sea wasn't ideal for trans-Pacific signals because China clobbers the whole band there. I'm sure it's possible though with the right equipment and a quieter location, just certainly not where I was and holding a portable radio with its own antenna.

audiophile wrote:Very cool!

I'm shocked at the about of english content.
Most of that stuff comes from NHK Radio 2. East Asia is all about studying and English is a big one. In Korea, all that programming is on EBS, which is an FM network. But in Japan, you get high school-level English practice for exams most of the night and then starting early in the morning (school off-hours) and there are plenty of NHK 2 stations to go around, many of them very high-powered. With that, a lot of English... in a corny sounding sorta way oftentimes. But there are stations that ID in English too, like the 107.4 one you can hear.
[ Radio and weather geeks, beware! Coastal tropo studies and the Seoul AM Radio Listening Guide documentary at http://www.beaglebass.com/dxTuner: Grundig G8 • Location: Fremont, Mich. / 101 mi. ene of Milwaukee ]

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Re: East Asia AM Radio (Audio Bandscans)

Post by Turkeytop » Sun Dec 11, 2016 9:50 pm

Thanks for posting that What hour of the day were you doing the monitoring?

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Re: East Asia AM Radio (Audio Bandscans)

Post by cckadlec » Mon Dec 12, 2016 2:08 am

These are skywave conditions, therefore the dark hours of the day. The recordings span a full year, so it's absolutely not just one night or anything. The band there is ridiculously busy, so it's really the best of the best out of 40 hours of recordings (the most interesting 10 minutes I suppose you could say). Signal quality rises and falls and it can be hard to get 1 station alone when a few come in together. Since I usually got out of work at 11pm, the bulk of the recordings are between 11 and 3am. By that hour, a lot of stations have turned off for the night.

I should say that some of the Korean clips (Seoul and Pyongyang mainly) were recorded during the afternoon as they are clearer at that hour, being locals. While most people couldn't make much sense of it, being in the American radio scene here, here's the station list (I added the countries just for this post!):

00:00 - CHN 1251 Shandong Country Radio (0:05)
00:07 - JPN 1332 Tokai Radio Nagoya (0:07)
00:14 - DPK 720 KCBS Kanggye (0:06)
00:21 - KOR 558 KBS 2 Radio Daegu (0:03)
00:25 - KOR 1188 FEBC Seoul (0:04)
00:29 - KOR 1161 MBC Busan (0:07)
00:37 - KOR 1134 KBS 3 Radio Seoul (0:02)
00:39 - JPN 1494 RSK Sanyo Broadcasting (0:07)
00:47 - KOR 1188 VOA Seoul (0:06)
00:53 - KOR 603 KBS 2 Radio Seoul (0:04)
00:58 - CHN 963 China Radio Int'l Russian (0:04)
01:03 - KOR 1080 MBC Yeosu (0:06)
01:09 - CHN 1143 Jilin City Story Radio (0:06)
01:15 - JPN 1278 RKB Mainichi Broadcasting (0:07)
01:23 - CHN 1179 Hubei Information Radio (0:05)
01:29 - KOR 1143 Radio Free Korea (0:08)
01:37 - CHN 720 CNR-16 Beijing (0:04)
01:41 - JPN 1278 RKB Mainichi Broadcasting (0:04)
01:46 - JPN 1134 Nippon Cultural Tokyo (0:06)
01:52 - KOR 864 KBS 1 Radio Gangneung (0:06)
01:58 - JPN 873 NHK Radio 2 Kumamoto (0:05)
02:04 - DPK 819 KCBS / DPRK Jammer (0:03)
02:07 - CHN 1206 Jiangsu Story Radio (0:07)
02:15 - DPK 621 Pyongyang Broadcasting (0:05)
02:20 - CHN 1548 Shandong People's Radio (0:08)
02:28 - KOR 1566 FEBC Jeju (0:08)
02:37 - MON 1431 Babcock Int'l Test (0:06)
02:44 - KOR 1188 Radio Free Asia Seoul (0:05)
02:49 - JPN 648 AFN Okinawa Surf 648 (0:03)
02:52 - JPN 1296 NHK Radio 1 Matsue (0:05)
02:58 - DPK 891 DPRK Jammer (0:03)
03:02 - CHN 1395 Anhui Story Radio Hefei (0:05)
03:07 - CHN 1476 Great Northern Wilderness (0:06)
03:14 - DPK 657 Pyongyang Broadcasting (0:06)
03:21 - KOR 792 SBS Love FM Seoul (0:04)
03:25 - CHN 981 CNR-1 Changchun (0:08)
03:33 - TWN 1557 Taiwan Int'l I Love Music (0:07)
03:41 - CHN 1305 Jinan Literature Radio (0:06)
03:47 - KOR 1062 KBS 1 Radio Cheongju (0:06)
03:54 - CHN 1305 CNR-8 Helong (0:09)
04:03 - DPK 801 Pyongyang B. & NIS Jammer (0:06)
04:09 - JPN 747 NHK Radio 2 Sapporo (0:01)
04:11 - KOR 1467 KBS 1 Mokpo & DPRK Laser (0:10)
04:21 - CHN 1206 Yanbian Comprehensive R. (0:04)
04:25 - CHN 1125 Hebei Story Radio (0:02)
04:27 - THA 1575 Voice of America Rasom (0:09)
04:37 - KOR 1098 KBS 1 Radio Jinju (0:07)
04:44 - JPN 1242 NBS Nippon Broadcasting (0:07)
04:52 - KOR 1215 MBC Jinju (0:04)
04:56 - KOR 657 NIS Jammer Hwaseong (0:03)
05:00 - KOR 1386 MBC Mokpo (0:08)
05:08 - JPN 1242 NBS Nippon Broadcasting (0:05)
05:13 - CHN 810 Voice of Zhejiang (0:07)
05:20 - CHN 1530 Zhejiang News R. & AFN (0:08)
05:29 - CHN 1269 China Radio Int'l (0:06)
05:35 - KOR 792 SBS Love FM Seoul (0:04)
05:39 - DPK 1143 DPRK Jammer (0:03)
05:43 - DPK 819 KCBS Pyongyang (0:06)
05:50 - CHN 918 Shandong People's Radio (0:04)
05:54 - CHN 738 Jilin Comprehensive News R. (0:07)
06:01 - KOR 1053 NIS Jammer Gimpo (0:03)
06:04 - CHN 963 Liaoning Comprehensive R. (0:07)
06:12 - CHN 1458 Anshan Traffic Radio (0:06)
06:18 - CHN 1476 Great Northern Wilderness (0:06)
06:24 - CHN 1026 Beijing Public Service R. (0:07)
06:32 - KOR 972 KBS Hanminjok 1 Radio (0:09)
06:41 - CHN 639 CNR-1 Beijing (0:05)
06:47 - DPK 999 KCBS Hamhung & NIS Jammer (0:03)
06:50 - CHN 1323 China Radio Int'l Korean (0:09)
07:00 - JPN 666 NHK Radio 1 Osaka (0:05)
07:06 - KOR 684 NIS Jammer Seoul (0:03)
07:09 - JPN 1314 Radio Osaka OBC (0:09)
07:18 - CHN 1017 China Radio Int'l Korean (0:09)
07:27 - CHN 882 Shenyang Life Radio (0:07)
07:35 - DPK 711 DPRK Jammer (0:03)
07:38 - JPN 1575 AFN The Eagle Iwakuni (0:08)
07:47 - CHN 1323 China Radio Int'l Korean (0:07)
07:55 - KOR 837 CBS Seoul (0:05)
08:00 - CHN 1566 Yanbian People's Radio (0:07)
08:07 - CHN 945 CNR-1 Jiaohe (0:05)
08:13 - DPK 1080 Echo of Unification Haeju (0:08)
08:21 - JPN 1440 STV Radio Sapporo (0:05)
08:27 - CHN 756 CNR-1 Laiyang (0:02)
08:29 - DPK 1584 DPRK Helicopter Jammer (0:03)
08:33 - KOR 1440 AFN Daegu (0:05)
08:38 - KOR 1566 FEBC Jeju (0:08)
08:47 - CHN 1422 CBN Radio Shanghai (0:08)
08:56 - KOR 855 NIS Coastal Jammer (0:03)
08:59 - KOR 1170 KBS Hanminjok 2 Radio (0:06)
09:05 - KOR 900 MBC Seoul & DPRK Jammer (0:04)
09:10 - CHN 1593 CNR-1 Changzhou (0:10)
09:20 - CHN 585 Jiangsu Finance Radio (0:07)
09:27 - KOR 657 NIS Jammer Hwaseong (0:03)
09:31 - JPN 1233 NBC Nagasaki Broadcasting (0:06)
09:37 - CHN 927 Liaoning Rural Radio (0:07)
09:44 - KOR 1080 AFN Daegu & NIS Jammer (0:07)
09:52 - KOR 1170 KBS Hanminjok 2 Radio (0:08)
10:00 - DPK 1566 DPRK Laser Jammer (0:05)
10:06 - JPN 1350 RCC Broadcasting (0:06)
10:12 - JPN 1179 MBS Mainichi Broadcasting (0:07)
10:19 - JPN 873 NHK Radio 2 Kumamoto (0:09)
[ Radio and weather geeks, beware! Coastal tropo studies and the Seoul AM Radio Listening Guide documentary at http://www.beaglebass.com/dxTuner: Grundig G8 • Location: Fremont, Mich. / 101 mi. ene of Milwaukee ]

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Re: East Asia AM Radio (Audio Bandscans)

Post by k8jd » Mon Dec 12, 2016 4:32 pm

Some very interesting info.
I am guessing the AM stations over there would never think of using directional antennas !
The last time I visited Hawaii I found a golf course on the Big Island, near the Kona coast, where I could sit with my GE SuperRadio, late at night, away from noisy buildings and wires.
The many local AM stations on Oahu and Maui were far enough away to be no interference problem.
I was not into making lists at the time but I recall hearing stations in Australia, American Samoa Vancouver and San Francisco and a Whole Lot of stations in oriental languages that I had no way of IDing at the time !
I wish I had recorded what I heard, even on paper !

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Re: East Asia AM Radio (Audio Bandscans)

Post by cckadlec » Mon Dec 12, 2016 8:39 pm

k8jd wrote:Some very interesting info.
I am guessing the AM stations over there would never think of using directional antennas !
Actually, directional antennas are extremely common there. It depends on the network and who targets who, but CRI (China Radio Int'l) is highly directional. On 1323, there's the Russian service aimed east and north. They're commonly heard in the western states and west coast. However, the 1323 just 200 miles from that is 600kw and rarely heard here because it is aimed south. The North American and European DXers tend to get all the north and east aiming stations daily (in the case of Europe, they just hop over the North Pole), but not the ones aimed south.

Getting data on directional antennas isn't all that easy actually. Japan is really open with all of its... everything. Even Wikipedia usually lists the stations' transmitter brand and model. Korea is very open with location and technical info but not antenna patterns. The jammers are directional in many cases and the propaganda stations absolutely are highly-directional. But commercial stations, it's anyone's guess. China... aside from CRI, just no idea at all. Things are harder to come by there.
[ Radio and weather geeks, beware! Coastal tropo studies and the Seoul AM Radio Listening Guide documentary at http://www.beaglebass.com/dxTuner: Grundig G8 • Location: Fremont, Mich. / 101 mi. ene of Milwaukee ]

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Re: East Asia AM Radio (Audio Bandscans)

Post by cckadlec » Sun Dec 18, 2016 11:31 pm

For those who have interest in this topic or are watching this thread, I've edited my original post to include the final 45 minutes of my 3 hour broadcast, which is the topic of the radio wars on the Korean peninsula, including Korean noise jammers and propaganda from both sides of the border, with full commentary.
[ Radio and weather geeks, beware! Coastal tropo studies and the Seoul AM Radio Listening Guide documentary at http://www.beaglebass.com/dxTuner: Grundig G8 • Location: Fremont, Mich. / 101 mi. ene of Milwaukee ]

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Re: East Asia AM Radio (Audio Bandscans)

Post by Some Guy from Toledo » Mon Jan 09, 2017 6:34 pm

audiophile wrote:Very cool!

I'm shocked at the about of english content.
AFKN's radio service would've been an easy pick. In the analog TV days, citizens in Seoul could easily watch American programs in English through their TV station.
Image

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Re: East Asia AM Radio (Audio Bandscans)

Post by k8jd » Sat May 06, 2017 2:09 pm

I found the audio scan quite interesting. The last time I visited Hawaii I had my big GE SuperRadio with me and found a place far from the local transmitters on the Big Island, I heard a lot of oriental languages, Russian, along with English from North America's West coast and Australia on AM .
if you allow 5 seconds for each of the 1070 or so AM 10 kHz "channels" , It WOULD TAKE 90 MINUTES TO RECORD the entire AM band channel by channel. Maybe that will mke a project for me to do :D

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Re: East Asia AM Radio (Audio Bandscans)

Post by Turkeytop » Sat May 06, 2017 7:46 pm

k8jd wrote:
Sat May 06, 2017 2:09 pm
I found the audio scan quite interesting. The last time I visited Hawaii I had my big GE SuperRadio with me and found a place far from the local transmitters on the Big Island, I heard a lot of oriental languages, Russian, along with English from North America's West coast and Australia on AM .
if you allow 5 seconds for each of the 1070 or so AM 10 kHz "channels" , It WOULD TAKE 90 MINUTES TO RECORD the entire AM band channel by channel. Maybe that will mke a project for me to do :D
In 2010 I was in Mexico, on the Yucatan Peninsula. At night there I could hear U.S. Gulf Coast stations from Texas around to Florida

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Re: East Asia AM Radio (Audio Bandscans)

Post by k8jd » Sat May 06, 2017 10:51 pm

Totally screwed up my math on the band scan. Not good late at night here, reworking it now.
for an area with 9 kHz channels a band scan allowing 5 seconds listening on each channel would take about 9.9 minutes total.
Where the channels are 10 kHz it would take about 8.9 minutes

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Re: East Asia AM Radio (Audio Bandscans)

Post by audiophile » Sun May 07, 2017 8:37 am

Those 9 kHz whistles must be annoying though...
Ask not what your country can do FOR you; ask what they are about to do TO YOU!!

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Re: East Asia AM Radio (Audio Bandscans)

Post by k8jd » Wed May 10, 2017 1:32 pm

I have seen some high end AM /multiband radios that have not only selectable 9/10 channel increments, but ALSO 9/10 kHz hetrodyne notch filters.

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Re: East Asia AM Radio (Audio Bandscans)

Post by cckadlec » Mon May 15, 2017 12:51 am

Some Guy from Toledo wrote:
Mon Jan 09, 2017 6:34 pm
audiophile wrote:Very cool!

I'm shocked at the about of english content.
AFKN's radio service would've been an easy pick. In the analog TV days, citizens in Seoul could easily watch American programs in English through their TV station.
Image
Well, AFN had local TV on analog until analog went off at the end of 2012. They have cut back on their services and I believe they are only on on-base cable now, but I believe they are also available on some cable off-base as well, depending on the provider. About 95% of residents have cable, so it's a waste for AFN to broadcast any other way. They cut many of their AM and FM stations in past years as well, but built a really nice new HQ on Humphreys that opened last fall. There's plenty of English content on the radio in Asia and you can hear a decent amount, especially in Shanghai, like AT40 and other such American programs on some of the stations. I have plenty of clips of that just from tropo catches, though I haven't really organized them all still.
[ Radio and weather geeks, beware! Coastal tropo studies and the Seoul AM Radio Listening Guide documentary at http://www.beaglebass.com/dxTuner: Grundig G8 • Location: Fremont, Mich. / 101 mi. ene of Milwaukee ]

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