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Old 13-07-2018, 12:16   #1
drmdab
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China National Radio on 6030 kHz

Hi all,

found this news on DXLD mailing list, posted by Ron Howard from California:

CNR was heard in DRM on 6030 kHz at 0647 UTC with traditional music. See this link for more: http://radio.chobi.net/DX/bbs/?res:731#3351
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Old 18-07-2018, 14:57   #2
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CNR (China National Radio) will be having DRM tests on 6030 kHz, 24th July onwards at 0100-0800 UTC
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Old 23-07-2018, 15:28   #3
zfyoung
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According to some insider info. The schedule is from 20:25 to 18:05 (UTC). Main service area is North East China. Central and East China should also get good coverage.
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Any kind of audio drop-out is worse than any kind of low quality audio: No audio, No log report.

My Rx location: GuangXi Province @ E10636′ N2355′
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Old 24-07-2018, 01:48   #4
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No signal here in Japan because it is broad daylight here at the time of writing (00:20 UTC). I received a weak signal around 0010 UTC with a 0-30 MHz Kiwi SDR at Shenzhen, China. The SNR at that location was about 4-5 dB and no audio.

Mode B / 10 kHz
Interleaver: 400 ms
SDC/MSC: 4/16
Protection: 1/1
Audio: 1/0
Time/Date: Tue Jul 24 08:11 (Chinese local time!)
Attached Images
File Type: jpg 6030kHzTitle24.07.2018@0011UTCfrom ShenzenKiwi.jpg (24.9 KB, 68 views)
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Old 24-07-2018, 04:02   #5
tpreitzel
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Digital shortwave done right! Wow!

Now, xHE-AAC please, and possibly a better frequency in the 25 or 31 meter bands.

Last edited by tpreitzel : 24-07-2018 at 04:08.
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Old 24-07-2018, 08:12   #6
MARCEL
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No signal in Northeast FRANCE around 2018.24.7 at 5H00 UTC
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Old 24-07-2018, 11:54   #7
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Some signal seen here in Shizuoka now around 1030 UTC. Around 7 dB SNR and a steady label.

I'll report later.
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Old 24-07-2018, 23:34   #8
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Quote:
Originally Posted by zfyoung
According to some insider info ...

Any information of the location of the TX site?
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Old 24-07-2018, 23:43   #9
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China National Radio on 6030 kHz

My two logs from last night in central Japan. The first log is 2 hours 40 minutes and the second is 3 hours 38 minutes long. There were only a few fragments of decoded audio. The transmission seems to be a mix of talk and music.
Attached Images
File Type: png 6030-180724-1030-1309-Terje@JPN.png (36.6 KB, 60 views)
File Type: png 6030-180724-1317-1654-Terje@JPN.png (37.1 KB, 53 views)
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Old 25-07-2018, 01:55   #10
zfyoung
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Quote:
Any information of the location of the TX site?
The tip-off did not provide the info. about the Tx location. On the other hand, you can detect the whereabouts by conducting HF direction finding via KiWi TDoA. Some enthusiast has applied that technique and successfully captured the CNR Tx site in AM mode.
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Any kind of audio drop-out is worse than any kind of low quality audio: No audio, No log report.

My Rx location: GuangXi Province @ E10636′ N2355′
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Old 25-07-2018, 02:36   #11
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Quote:
Originally Posted by zfyoung
... the whereabouts by conducting HF direction finding via KiWi TDoA.

I found a Chinese SDR at OM88co (Hebei), but soon after I started logging it disappeared and now it's no longer on the list at sdr.hu. Grrr.
Attached Images
File Type: png 6030-180725-0036-0039-Terje@JPN.png (28.9 KB, 54 views)
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Old 25-07-2018, 06:21   #12
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China DRM 6030 kHz

HFCC lists 6030 kHz Beijing , China, with 100 kW to an omni directional antenna.

Inputting these parameters into VOACAP shows a good signal into Japan from 1000 - 2200 UTC. However HFCC listed transmission time is 2025 - 1805 UTC.

Christopher on the DRMNA Forum reported a marginal signal (no audio, but screen ID) at 1430 UTC on the NW coast of the USA which agrees with VOACAP prediction.
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Last edited by AF4MP : 25-07-2018 at 19:37. Reason: Added transmission time, edited typo.
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Old 25-07-2018, 09:23   #13
alokesh
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Received at 13.00 UTC CNR DRM test transmission on 6030khz via SDR receiver at RU/ROCCN (Russia, Khabarovsk) with several audio interruptions.

>>>>
Dream
Software Version 2.1.1-svn808
Starttime (UTC) 2018-07-24 13:04:19
Frequency 6030khz
Label 中中中中
Bitrate 14.56 kbps
Mode B
Bandwidth 10 kHz
MINUTE SNR SYNC AUDIO TYPE
0000 13 150 604/05 0
0001 16 150 663/05 0
0002 12 5 20/00 0
0003 15 76 303/05 0
0004 15 150 623/05 0
0005 12 89 288/05 0
0006 13 63 233/05 0
0007 16 135 592/05 0
0008 16 150 703/05 0
0009 16 150 706/05 0
0010 16 149 708/05 0
0011 16 150 661/05 0
0012 16 150 633/05 0
0013 15 150 643/05 0
0014 15 150 537/05 0

Regards,
Benjamin

(Via email to me)
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Old 25-07-2018, 14:30   #14
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My log from this evening: Max. 13,57 dB SNR and 2,94% decoded audio. An audio snippet is enclosed. Only a few seconds because of the size limitations of this Forum.

The title in the Gospell became "????". Any comments?
Attached Images
File Type: png 6030-180725-0954-1243-Terje@JPN.png (37.7 KB, 52 views)
Attached Files
File Type: zip 6030kHz25jul2018.zip (88.3 KB, 43 views)
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Old 25-07-2018, 19:44   #15
AF4MP
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KiwiSDR TDoA China 6030 kHz

Just tried out the very neat KiwiSDR TDoA direction finding feature on the China 6030 kHz transmitter.

Using fixes from 1 Russian, 2 Japanese, and 2 Chinese KiwiSDR web receivers the result is shown in the Attachment.

The forum file size limitation restricted the attachment size.
Attached Images
File Type: png China 6030 TDoA.png (93.8 KB, 106 views)
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