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Old 19-07-2019, 02:36   #61
Digger
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18th July 2019

Even better this time: China National Radio logged for 94 minutes from 0726-0900 UTC. Max. 24,93 dB SNR and 99,25% decoded audio.
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Old 31-07-2019, 00:29   #62
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China National Radio logged for 47 minutes from 0812-0900 UTC. Max. 18,83 dB SNR and 99,72% decoded audio
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Old 31-07-2019, 10:30   #63
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China National Radio logged for 47 minutes from 0812-0900 UTC. Max. 18,67 dB SNR and 99,15% decoded audio. More or less the same results as yesterday afternoon.
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Old 01-08-2019, 04:12   #64
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fairly consistent audio from your reception

Nice spill-over signal to 日本 Terje. I'm anxious to see the same from the KTWR specials coming soon! From this VOACAP, you should have some luck!

https://1.bp.blogspot.com/--uhQECRwG...0_50DRM_JA.JPG
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Salem, Oregon, USA
44.901951 -123.048109
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Old 01-08-2019, 04:16   #65
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What is your opinion of their settings?

Seems like OK SNR for audio decode. Not too high bitrate but near the magic point for adequate audio fidelity? Your thoughts?
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Old 01-08-2019, 06:51   #66
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01 Aug. 2019

Quote:
Originally Posted by fibber
Seems like OK SNR for audio decode. Not too high bitrate but near the magic point for adequate audio fidelity? Your thoughts?

Hi Christopher and all,
The Chinese DRM run all kinds of modes.
11695 Dongfang, usually good. 14,56 kbps, UEP, AAC, Mono. ID:3E8
15580 Dongfang , mostly weak. 17,46 kbps, UEP, AAC+, P-Stereo. ID:3E8
13850 Urumqi, very weak. 17,46 kbps, UEP, AAC+, P-Stereo. ID:3EC
9655 Urumqi, weak, 17,46 kbps, UEP (22.2%), AAC+, P-Stereo. ID:3EC
9870 Qiqihar, 14,56 kbps, UEP 20,7% aac+ P-Stereo, ID:1
15735 Qiqihar, no signs in Japan
17800 Qiqihar, no signs in Japan
13825 Beijing, 11,64 kbps, UEP21,6%, aac, Mono, ID:3EA
15250 Kunming, very weak. 11,64 kbps, UEP(21.6%), aac, Mono. ID:2
17770 Dongfang, 11,64 kbps, 4/16, UEP(21.6%), aac, Mono. ID:3E8
21555 Kunming, 11,64 kbps, UEP(21.6%), aac, Mono. ID:2
9540 Kunming, 11,64 kbps, UEP(21.6%), 4/16, P0/0, aac, Mono. ID:2
13710 Qiqihar, fair, 14,56 kbps, UEP 20,7%, 4/16, P1/1, aac+, P-Stereo, ID:1
15180 Kunming, 11,64 kbps, UEP(21.6%), 4/16, P0/0, aac, Mono. ID:2

Note that not all these frequencies are on air now - the parameters I read from DReaM. When there is some decoded audio, the limit is usually 5000 Hz audio. Lately the 6030 kHz broadcast had changed its Label from Chinese characters to "CNR-1". High bitrate of 23,62 kbps produces (almost) no audio. There is no ID in DReam. The mode was A and 9 kHz bandwidth.

Sometimes I get answers from China by e-mail to my questions regarding frequency changes, but it is difficult to discuss DRM parameters. I suppose they know what they are doing - after all it is a domestic test as far as I can understand.

Just now it is almost 07 UTC and the path for 11695 kHz is opening up. The Bitrate is 14,56 kbps and chopped audio is present with >8 dB SNR. The audio is quite good and the audio BW is 5000 Hz.

The log from 1st August:
China National Radio logged for 84 minutes from 0735-0859 UTC. Max. 16,98 dB SNR and 18,36% decoded audio. Perhaps the solar wind was to blame for the the poor result in this log.
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File Type: png 11695-190801-0735-0859-Hatori.png (41.8 KB, 18 views)
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Last edited by Digger : 02-08-2019 at 00:25.
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Old 03-08-2019, 01:47   #67
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Much better today. China National Radio logged for 62 minutes from 0758-0900 UTC. Max. 19,75 dB SNR and 97,42% decoded audio.
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File Type: png 11695-190802-0758-0900-Hatori.png (39.3 KB, 17 views)
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Old 08-08-2019, 01:14   #68
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China National Radio logged for 102 minutes from 0719-0901 UTC. Max. 15,91 dB SNR and 34,75% decoded audio.
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File Type: png 11695-190807-0719-0901-Hatori.png (43.4 KB, 12 views)
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Old 11-08-2019, 01:17   #69
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China National Radio logged for 83 minutes from 0736-0859 UTC. Max. 21,73 dB SNR and 79,02% decoded audio.
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File Type: png 11695-190810-0736-0859-Hatori.png (41.9 KB, 17 views)
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Old 15-08-2019, 00:11   #70
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A DR-111 log

China National Radio logged with the Newstar DR-111 for 108 minutes from 0708-0856 UTC (clock is 3-4 minutes slow). Max. 20,0 dB SNR and 99,34% decoded audio.

The radio stood on a table inside the house with the built-in telescopic antenna.
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File Type: png 11695-190814-0708-0856-Hatori.png (39.4 KB, 15 views)
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Old 20-08-2019, 05:59   #71
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China National Radio logged for 112 minutes from 0708-0900 UTC. Perfect decoding from 0813 UTC. Max. 22,02 dB SNR and 71,60% decoded audio.
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File Type: png 11695-190819-0708-0900-Hatori.png (42.9 KB, 13 views)
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Old 21-08-2019, 09:15   #72
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China National Radio logged for 80 minutes from 0740-0900 UTC. Max. 22,21 dB SNR and 99,88% decoded audio. Perfect reception this afternoon.
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File Type: png 11695-190821-0740-0900-Hatori.png (37.7 KB, 15 views)
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Old 25-08-2019, 06:08   #73
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24th August

China National Radio logged for 89 minutes from 0730-0900 UTC. Max. 19,29 dB SNR and 86,95% decoded audio.
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File Type: png 11695-190824-0730-0900-Hatori.png (42.5 KB, 12 views)
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Old 10-09-2019, 01:02   #74
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China National Radio logged for 51 minutes from 0808-0859 UTC. Max. 16,30 dB SNR and 98,97% decoded audio. Conditions are slowly getting better.
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File Type: png 11695-190909-0808-0859-Hatori.png (37.7 KB, 4 views)
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