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Old 09-04-2019, 19:03   #121
FritzWue
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Due to the robust 4-QAM SDC the label is visible with
adapted bandwidth and notch filter at almost no SNR:
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File Type: png 6030_190409_1723_DK6QI.png (37.6 KB, 87 views)
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Old 13-04-2019, 07:07   #122
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Now I know when the propagation ends.
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Old 18-04-2019, 19:20   #123
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Transmission ended short after 18 UTC
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Old 16-05-2019, 22:13   #124
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An unexpected result in mid of May.
Interfering AM on 6025, 6030, and strong on 6040 kHz.
Teletype on 6032 kHz, no audio when this was on.
Excellent audio quality.
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File Type: png 6030_190516_DK6QI.png (7.2 KB, 67 views)
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Old 16-05-2019, 22:24   #125
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Quote:
Originally Posted by FritzWue
An unexpected result in mid of May.
Interfering AM on 6025, 6030, and strong on 6040 kHz.
Teletype on 6032 kHz, no audio when this was on.
Excellent audio quality.

Humorous given all the interference ...
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Old 16-05-2019, 23:21   #126
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Quote:
Originally Posted by tpreitzel
Humorous given all the interference ...

Let me "hamify" it:
At this time of year on that frequency at that distance it is a problem to receive a local broadcast signal, especially a digital coded.
I enjoy if I can receive anything like that on 49m at this time of year.
I got enough audio to classify the sound quality as excellent.
Zipped MP3 sample attached.
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File Type: zip 6030_190516_1704_DK6QI.zip (80.8 KB, 66 views)
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Old 17-05-2019, 23:10   #127
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Quote:
Originally Posted by FritzWue
Let me "hamify" it:
At this time of year on that frequency at that distance it is a problem to receive a local broadcast signal, especially a digital coded.
I enjoy if I can receive anything like that on 49m at this time of year.
I got enough audio to classify the sound quality as excellent.
Zipped MP3 sample attached.

Absolutely, many members, including myself occasionally, enjoy attempting the difficult as it's a challenge. Personally, I want to see DRM achieve a more functional role, i.e. turn on the DRM radio and hear or watch relevant content applicable to the listener. As a group, we're getting there albeit slowly. Your receiving environment and equipment are obviously excellent for decoding DRM broadcasts and I enjoy your observations. I'll be listening to your sample of this broadcast. Thanks, Friedrich.

Last edited by tpreitzel : 17-05-2019 at 23:38.
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Old 15-07-2019, 14:41   #128
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6030 kHz

A Channel Impulse Response that looks like this will guaranteed never produce any decoded audio! Just have to wait and see how 6 MHz changes after summer in Japan.
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File Type: png 6030cir15jul2019@1336utc.png (17.7 KB, 52 views)
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Old 29-07-2019, 12:18   #129
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29 July 2019

I noticed this evening that the 6030 broadcast had changed from Chinese characters to "CNR-1". High bitrate of 23,62 kbps produces (almost) no audio. There is no ID in the screenshot. The mode was A and 9 kHz bandwidth.

China National Radio (new: CNR-1) logged for 121 minutes from 1119-1321 UTC. Max. 13,42 dB SNR and 0,02% decoded audio.
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File Type: jpg 6030kHzTitle29.07.2019@1104UTCfrom-Shizuoka.jpg (21.9 KB, 49 views)
File Type: png 6030-190729-1119-1321-Hatori.png (37.8 KB, 43 views)
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Last edited by Digger : 30-07-2019 at 02:27. Reason: Added a log
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Old 31-07-2019, 01:27   #130
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8th Oct. 2019

China National Radio logged for 109 minutes from 2112-2300 UTC. Max. 19,83 dB SNR and 13,11% decoded audio.
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File Type: png 6030-191008-2112-2300-Hatori.png (43.6 KB, 15 views)
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Last edited by Digger : 09-10-2019 at 02:23.
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Old 09-10-2019, 21:05   #131
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Very poor signal this afternoon from China of 6030 Khz only of screen :

https://nsa40.casimages.com/img/2019...0926557069.jpg
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