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CHINA : CNR DRM - Voice of China (CNR-1) --- XYZ - Jul 19 (Sun), 2020 22:22 UTC No.991
CHINA : CNR DRM - Voice of China (CNR-1)


MAY 14, 2020, (Times: UTC)
-----------------------------------------------------
6030kHz 2025-1805 BEI 30kW ID: 3FF
9655kHz 2200-0100 URU 30kW ID: 3EC
9655kHz 0800-1200 URU 30kW ID: 3EC
9870kHz 1000-1200 QIQ 30kW ID: 1
11695kHz 0100-0900 DOF 30kW ID: 3E8
11995kHz 0100-1000 QIQ 30kW ID: 1
13810kHz 0400-1100 KUN 30kW ID: 2
13825kHz 0100-0900 BEI 30kW ID: 3EA
15180kHz 0100-0400 KUN 30kW ID: 2
17770kHz 0100-0900 DOF 30kW ID: 3E8
17830kHz 0100-0800 URU 30kW ID: 3EC
-----------------------------------------------------

BEI(北京)
2025-1805  6030kHz
0100-0900 13825kHz

DOF(海南东方)
0100-0900 11695kHz
0100-0900 17770kHz

KUN(昆明)
0100-0400 15180kHz
0400-1100 13810kHz

QIQ(齐齐哈尔)
0100-1000 11995kHz
1000-1200  9870kHz

URU(乌鲁木齐)
2200-0100  9655kHz
0100-0800 17830kHz
0800-1200  9655kHz


Thanks to Cahcn : https://cahcn.github.io/drm/



Re: CHINA : CNR DRM - CHINA xHE-AAC codec DRM - XYZ Jul 19 (Sun), 2020 22:59 UTC No.992
[xHE-AAC] ** Extended High-Efficiency AAC audio codec

*** This transmission seems to have been a test and has NOT been TX recently. (JUly 19, 2020)


Recently, a new type of DRM broadcast has been sent from China. The codec called "xHE-AAC"
is used for that, and demodulation is difficult unless special software is used.
The new type of DRM broadcast still seems to be testing, playing nonstop Chinese music.
And the frequency is changed according to time. (Irregular)


See also (Thanks Hiroshi !) : http://drm.mediacat-blog.jp/e139570.html

(All ID: 3F9
---------------------------
12020kHz 0100-0200
15630kHz 0200-0400
15625kHz 0401-0703
17660kHz 0704-1201
---------------------------
** 13775kHz was also used.


New DRM software is required to demodulate this broadcast.
** Reference : https://www.reddit.com/r/RTLSDR/comments/grp6m2/dream_v221_for_windows_with_xheaac_support/

It still has a fatal bug, but it can be demodulated.



Re: CHINA : CNR DRM - CHINA xHE-AAC codec DRM - XYZ Jul 27 (Mon), 2020 06:28 UTC No.999
Some frequencies of CHINA-DRM are changed to xHE-AAC codec.


6030kHz ---> No change
9655kHz ---> No change
11995kHz ---> xHE-AAC (old: HE-AAC)
13810kHz ---> No change
13825kHz ---> No change
17770kHz ---> xHE-AAC (old: HE-AAC)
17830kHz No signal
... Other frequencies are under investigation.



Re: CHINA : CNR DRM - Voice of China (CNR-1) - Ron Howard Jul 29 (Wed), 2020 01:09 UTC No.1000
Question: On July 28, on 5985 kHz., at 1207 UT, noted what sounded like a DRM signal or perhaps a jamming noise?
Was totally blocking Myanmar Radio reception.



Re: CHINA : CNR DRM - Voice of China (CNR-1) - XYZ Jul 29 (Wed), 2020 03:29 UTC No.1001
>Ron-san
I couldn't confirm DRM signal here, so I think it's probably a jamming from North Korea.


-0319-
15180kHz ---> No change


CNR1 DRM
--------------------------------------
6030kHz ---> No change
9655kHz ---> No change
11995kHz ---> xHE-AAC (old: HE-AAC)
13810kHz ---> No change
13825kHz ---> No change
17770kHz ---> xHE-AAC (old: HE-AAC)
17830kHz ---> No change
--------------------------------------


also see : http://drm.mediacat-blog.jp/e139887.html
** TNX Hiroshi !



Re: CHINA : CNR DRM - Voice of China (CNR-1) - XYZ Jul 31 (Fri), 2020 23:26 UTC No.1005
Memo:


[July 31]
-0905-
6030kHz CHINA, CNR-1 DRM, 9kHz width, 23.62kbps Stereo, ID: No display
9655kHz CHINA, CNR-1 DRM, 10kHz width, 14.56kbps Mono, ID: 3EC
11995kHz CHINA, CNR-1 DRM, 10kHz width, 11.64kbps Mono, xHE-AAC, ID: 1
13810kHz CHINA, CNR-1 DRM, 10kHz width, 14.56kbps Mono, ID: 2




Re: CHINA : CNR DRM - Voice of China (CNR-1) - XYZ Aug 01 (Sat), 2020 01:44 UTC No.1006
Memo:

-0135- TNX! PERSEUS server A4ICR.

11695kHz No signal
13825kHz CHINA, CNR-1 DRM, 10kHz width, 11.64kbps Mono, ID: 3EA
15180kHz CHINA, CNR-1 DRM, 10kHz width, 14.56kbps Mono, ID: 2
17770kHz CHINA, CNR-1 DRM, 10kHz width, 11.64kbps Mono, xHE-AAC, ID: 3ED
17830kHz CHINA, CNR-1 DRM, 10kHz width, 14.56kbps Mono, ID: 3EC



Re: CHINA : CNR DRM - Voice of China (CNR-1) - XYZ Aug 02 (Sun), 2020 12:08 UTC No.1008
Thanks Hiroshi ! : http://drm.mediacat-blog.jp/e139961.html

9870kHz CHINA, CNR-1 DRM, 10kHz width, 11.64kbps Mono, xHE-AAC, ID: 1



CHINA DRM Voice of China(CNR-1) August 2020
------------------------------------------------------------------------------------
6030kHz CHINA, CNR-1 DRM, 9kHz width, 23.62kbps Stereo, ID: No display
9655kHz CHINA, CNR-1 DRM, 10kHz width, 14.56kbps Mono, ID: 3EC
9870kHz CHINA, CNR-1 DRM, 10kHz width, 11.64kbps Mono, xHE-AAC, ID: 1
11695kHz No signal
11995kHz CHINA, CNR-1 DRM, 10kHz width, 11.64kbps Mono, xHE-AAC, ID: 1
13810kHz CHINA, CNR-1 DRM, 10kHz width, 14.56kbps Mono, ID: 2
13825kHz CHINA, CNR-1 DRM, 10kHz width, 11.64kbps Mono, ID: 3EA
15180kHz CHINA, CNR-1 DRM, 10kHz width, 14.56kbps Mono, ID: 2
17770kHz CHINA, CNR-1 DRM, 10kHz width, 11.64kbps Mono, xHE-AAC, ID: 3ED
17830kHz CHINA, CNR-1 DRM, 10kHz width, 14.56kbps Mono, ID: 3EC
------------------------------------------------------------------------------------




Re: CHINA : CNR DRM - Voice of China (CNR-1) - XYZ Aug 03 (Mon), 2020 02:28 UTC No.1010
Test ?  DRM transmission on new frequency


[Aug 02]
0800-0840 17485kHz, (TNX Hiroshi : http://drm.mediacat-blog.jp/e139961.html )

[Aug 03]
0200- ? 15645kHz, xHE-AAC 14.56kbps Mono, (TNX Hirabayasi via Japanese BBS.)
... and TNX PERSEUS server JA4ICR/JAPAN. On my radio with a broken antenna, I can't even see their signal.

-0755- 17660kHz, xHE-AAC 14.56kbps Mono, ID: 3F9


Previously made test transmission
(All ID: 3F9
---------------------------
12020kHz 0100-0200
15630kHz 0200-0400
15625kHz 0401-0703
17660kHz 0704-1201
---------------------------
** 13775kHz was also used.




Re: CHINA : CNR DRM - Voice of China (CNR-1) - XYZ Aug 04 (Tue), 2020 12:01 UTC No.1011
Thanks Hiroshi : http://drm.mediacat-blog.jp/e139981.html


Aug 03-04;

xHE-AAC DRM
-----------------
0300-0500 15625
0500-0700 15275
0700-0900 17660
0900-1000 17775
1000-1200 17845
-----------------
** all 14.56kbps Mono ID:3F9



Re: CHINA : CNR DRM, xHE-AAC New frequencies - XYZ Aug 05 (Wed), 2020 06:13 UTC No.1012
Thanks  Hiroshi ! : http://drm.mediacat-blog.jp/e139987.html


xHE-AAC DRM
------------------------
0100-0200 17790
0200-0300 17725
0300-0500 15625 17660
0500-0700 15275 17790
0700-0900 17660
0900-1000 17775
1000-1200 17845
------------------------



Re: CHINA : CNR DRM - Voice of China (CNR-1) - XYZ Aug 05 (Wed), 2020 07:42 UTC No.1013
more...


-0735-
11995kHz xHE-AAC DRM, 14.56kbps,Mono, ID: 1
15440kHz xHE-AAC DRM, 14.56kbps,Mono, ID: 3F9 NEW freq!
17770kHz xHE-AAC DRM, 14.56kbps,Mono, ID: 3ED


-0930-
15600kHz xHE-AAC DRM, 14.56kbps,Mono, ID: 3F9




Re: CHINA : CNR DRM - 11695kHz - XYZ Aug 06 (Thu), 2020 03:25 UTC No.1014
Thanks to : https://bd6mm.cn/blog/2020/08/drm_shutdown_information.html


最新DRM广播停机信息 (Latest DRM broadcast shutdown information)

11695KHz : July 27 ~ October 27



Re: CHINA : CNR DRM - Voice of China (CNR-1) - Hans Aug 06 (Thu), 2020 08:07 UTC No.1015
Does anyone 



Re: CHINA : CNR DRM - Voice of China (CNR-1) - Hans Aug 06 (Thu), 2020 08:11 UTC No.1016
This is the music I heard on 15440 kHz DRM via a remote receiver in China.  China usually has CNR1 on
its DRM channels. Does anyone heard this type of music before from China?


1016.mp3
Re: CHINA : CNR DRM - Voice of China (CNR-1) - XYZ Aug 06 (Thu), 2020 09:41 UTC No.1017
Thanks Hans !

In DRM test broadcasts in China, non-stop music was sometimes played except for CNR-1 (Voice of China) programs.

* Sorry, this sound was too quiet to hear...


CNR-1 was broadcast when I heard it.
https://radio.chobi.net/DX/DRMBBS/?res:991#1013



Re: CHINA : CNR DRM - Voice of China (CNR-1) - XYZ Aug 06 (Thu), 2020 10:13 UTC No.1018
Thanks Hiroshi : http://drm.mediacat-blog.jp/e140006.html


Today's test :

0100-0300 17790
0300-0500 17660
0500-0700 17790
0701-0900 15440
0900- 15600



**
-1013- 15410kHz



Re: CHINA : CNR DRM - Voice of China (CNR-1) - XYZ Aug 07 (Fri), 2020 02:46 UTC No.1019
Thanks Hiroshi : http://drm.mediacat-blog.jp/e140014.html

12020kHz played non-stop music instead of CNR-1.


> https://radio.chobi.net/DX/DRMBBS/?res:1016
Hans's audio may have been this as well.
https://radio.chobi.net/DX/DRMBBS/img/1016.mp3



Re: CHINA : CNR DRM - Voice of China (CNR-1) - Hans Aug 07 (Fri), 2020 16:40 UTC No.1023
ZQ.fan, who lives in China, is reporting that these tests are from Kunming and that the target is Oceania.  To my knowledge, this is the first
time China has targeted a region other than China for DRM transmissions.



Re: CHINA : CNR DRM - xHE-AAC TX test from Kunming - XYZ Aug 07 (Fri), 2020 21:28 UTC No.1026
Thanks Hans !  Thanks for the great information !!

https://twitter.com/ZQFan1
** Thanks ZQ.Fan :D


昆明(Kunming)
same TX location as :
--------------------
0100-0400 15180kHz
0400-1100 13810kHz
--------------------



Re: CHINA : CNR DRM - Voice of China (CNR-1) - Hans Aug 08 (Sat), 2020 08:38 UTC No.1029
Based on it being targeted for Oceania, I tried some receivers in this direction.  Heard via a Kiwi located
in Perth, WA with a decent signal with some drop outs. 100% copy via a Kiwi in the Philippines. Both
logs at about 0830.



Re: CHINA : CNR DRM - Voice of China (CNR-1) - Hans Aug 08 (Sat), 2020 08:44 UTC No.1030
Audio file of Perth reception.


1030.mp3
Re: CHINA : CNR DRM - Voice of China (CNR-1) - Hans Aug 08 (Sat), 2020 08:48 UTC No.1031
Audio File of PI reception.


1031.mp3
Re: CHINA : CNR DRM - Voice of China (CNR-1) - Hans Aug 08 (Sat), 2020 09:18 UTC No.1032
17790 kHz went off at 0900 UTC, moved to 12000 kHz, which is a difficult frequency as CRI is in analog 
with Chinese on 12005 kHz (ironically, this is from Kunming as well.)

Lots of antenna choices a KUN, looks like 135 azimuth if targeting Oceania. Not sure of power though,
Chinese DRM is typically listed at 30 kW.

DOF had been in use on 11695 kHz, this has gone missing. When this transmissions started, I thought
they were from DOF based on this, but DOF does not appear to have an antenna for Oceania. They had
a total of two transmissions at DOF, now it is one. KUN use to have one, now they have two. So perhaps
KUN has some additional DRM equipment or it has been moved from DOF.



Re: CHINA : CNR DRM - Voice of China (CNR-1) - XYZ Aug 08 (Sat), 2020 09:44 UTC No.1034
Thanks Hans !!

DOF
-----------------
0100-0900 11695
0100-0900 17770
-----------------
** Normal DRM
** DOF = 海南东方 ("Hǎinán dōngfāng")


Today's SKD (Thanks Hiroshi): http://drm.mediacat-blog.jp/e140030.html
-----------------
0100-0250 12010
0250-0400 13665
0400-0702 15680
0702-0900 17790
----------------
** xHE-AAC Codec DRM test


...and Thanks ZQ.Fan @Twitter ! : https://twitter.com/ZQFan1



Re: CHINA : CNR DRM - Voice of China (CNR-1) - Hans Aug 08 (Sat), 2020 14:33 UTC No.1035
DOF had been in use on 11695 kHz, this has gone missing.  When this transmissions started, I thought
they were from DOF based on this, but DOF does not appear to have an antenna for Oceania. They had
a total of two transmissions at DOF, now it is one. KUN use to have one, now they have two. So perhaps
KUN has some additional DRM equipment or it has been moved from DOF.

Another possibility is that DOF has taken over the 'original' DRM transmission from KUN. That is, 01-04
on 15180, and 04-11 on 13810.



Re: CHINA : CNR DRM - Voice of China (CNR-1) - Hans Aug 08 (Sat), 2020 16:05 UTC No.1037
Sue Wei (with CRI) just tweeted that the tests from Kunming are not international in nature.  
So target is China rather than Oceania.

So we have different sources saying different things.



Re: CHINA : CNR DRM - Voice of China (CNR-1) - XYZ Aug 08 (Sat), 2020 23:27 UTC No.1038
Thanks Hans !!

We consider 'target' as 'directional'. Certainly it looks like that..

Hiroshi also wrote a similar article : http://drm.mediacat-blog.jp/e140030.html
------------------------------------------------------------------------------------------
Their test broadcast using the xHE-AAC codec continues today. As a result of trying
reception with SDR etc. in various places, the signal strength in the Oceania direction
is strong. There is no doubt from the frequency used.
All frequencies are strong from the west. The test broadcast time is mainly 0100-1200.
Kunming may be the transmitting station that does not broadcast overseas for this time.
------------------------------------------------------------------------------------------
** Translated by Google.




Re: CHINA : CNR DRM - Voice of China (CNR-1) - Hans Aug 10 (Mon), 2020 01:08 UTC No.1039
3F9 is testing on 13720 kHz at 0106 UTC,.



Re: CHINA : CNR DRM - Voice of China (CNR-1) - XYZ Aug 12 (Wed), 2020 09:46 UTC No.1040
Thanks Hans !


-0837- ** TNX Perseus server JA4ICR/JAPAN.

11695kHz (still off air)
11995kHz CHINA, CNR DRM (xHE-AAC), ID: 1 , CNR-1 px

13810kHz CHINA, CNR DRM
13825kHz CHINA, CNR DRM

17770kHz CHINA, CNR DRM (xHE-AAC), ID: 3ED, CNR-1 px
17790kHz CHINA, CNR DRM (xHE-AAC), ID: 3F9, Non-stop Music





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