DRM Software Radio Forums  

Go Back   DRM Software Radio Forums > DRM Software Radio - User Forums > Reception Results - Recent Posts
User Name
Password
FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 19-10-2018, 01:33   #1
Digger
Registered User
 
Digger's Avatar
 
Join Date: Mar 2005
Location: Shizuoka City, Japan
Posts: 9,821
China National Radio on 11695 kHz

Hi all,

Good reception of China National Radio on 11695 kHz in DRM now in central Japan. The time displayed is Chinese time, not UTC. Time of writing: 0133 UTC. Log later.

EDIT: Added a log. Just got it confirmed that both frequencies are transmitted from Dongfang (DOF) and the DRM Power is 30 kW.
Attached Images
File Type: png 11695-181019-0128-0248-Hatori.png (42.1 KB, 160 views)
__________________
Regards,
Terje

https://www.hobbyradio.se/en/drm/web....index_en.html

Last edited by Digger : 19-10-2018 at 03:57.
Digger is offline   Reply With Quote
Old 19-10-2018, 03:46   #2
Braccini
Registered User
 
Braccini's Avatar
 
Join Date: Aug 2016
Location: Brazil
Posts: 344
Quote:
Originally Posted by Digger
Hi all,

Good reception of China National Radio on 11695 kHz in DRM now in central Japan. The time displayed is Chinese time, not UTC. Time of writing: 0133 UTC. Log later.

EDIT: Added a log.
No signal in Brazil.
__________________
Francisco Braccini
DRM: Saving The Shortwave with Digital Radio!
YouTube DRM Channel: https://www.youtube.com/c/FranciscoBraccini
Braccini is offline   Reply With Quote
Old 21-10-2018, 09:25   #3
Digger
Registered User
 
Digger's Avatar
 
Join Date: Mar 2005
Location: Shizuoka City, Japan
Posts: 9,821
21st October 2018

Voice Of China on a new frequency, apparently a fine-tuning session, logged for 61 minutes from 0759-0900 UTC. Max.22,97 dB SNR and 99,93% decoded audio. It has been a long time since I logged a DRM station with 99% decoded audio!
Attached Images
File Type: png 11695-181021-0759-0900-Hatori.png (39.4 KB, 130 views)
__________________
Regards,
Terje

https://www.hobbyradio.se/en/drm/web....index_en.html

Last edited by Digger : 21-10-2018 at 09:35.
Digger is offline   Reply With Quote
Old 21-10-2018, 11:28   #4
tpreitzel
Registered User
 
tpreitzel's Avatar
 
Join Date: Apr 2012
Posts: 2,527
Does anyone know the actual azimuth of this beam, aimed at Taiwan perhaps? I assume the power is 30 kW digital ...
tpreitzel is offline   Reply With Quote
Old 21-10-2018, 13:04   #5
Digger
Registered User
 
Digger's Avatar
 
Join Date: Mar 2005
Location: Shizuoka City, Japan
Posts: 9,821
11695 kHz 0100-0900UTC CIRAF 44S (sort of SE China) DOF (Dongfang) 30 kW AZ41deg ant:206.

I was out all day today in the beautiful autumn weather, so I just got the last hour of this transmission. Log in post #3.
__________________
Regards,
Terje

https://www.hobbyradio.se/en/drm/web....index_en.html

Last edited by Digger : 22-10-2018 at 00:00.
Digger is offline   Reply With Quote
Old 21-10-2018, 17:44   #6
tpreitzel
Registered User
 
tpreitzel's Avatar
 
Join Date: Apr 2012
Posts: 2,527
Quote:
Originally Posted by Digger
11695 kHz 0100-0900UTC CIRAF 44S (sort of SE China) DOF (Dongfang) 30 kW AZ41deg ant:206.

I was out all day today in the beautiful autumn weather, so I just got the last hour of this transmission.

Oh, I see your edit in the first post now so it's confirmed that both of the new tests are from DOF. Thanks, Terje
tpreitzel is offline   Reply With Quote
Old 24-10-2018, 00:05   #7
Digger
Registered User
 
Digger's Avatar
 
Join Date: Mar 2005
Location: Shizuoka City, Japan
Posts: 9,821
23rd Oct.

Voice Of China logged for 491 minutes from 0049-0901 UTC. Max.21,89 dB SNR and 74,42% decoded audio. Between 0715-0901 there was more than 96% decoded audio. The decoded audio started at 0057 UTC.

Quite heavy Fading. S4-7, max. S9 measured around 0105 UTC. 14,56 kbps and 5000 Hz Audio Bandwidth. Good sound (Mono). There seems to be a TX break between 0435-0500. A mostly unattended log due to my absence.
Attached Images
File Type: png 11695-181023-0049-0901-Hatori.png (45.8 KB, 125 views)
__________________
Regards,
Terje

https://www.hobbyradio.se/en/drm/web....index_en.html
Digger is offline   Reply With Quote
Old 24-10-2018, 18:48   #8
tpreitzel
Registered User
 
tpreitzel's Avatar
 
Join Date: Apr 2012
Posts: 2,527
Oct 24th, 2018 partial log ...

Frequency: +
Codec: -
Modulation: + (if still 16 QAM)

The maximum SNR as logged is a spurious result.

My outdoor antenna is NOT properly oriented for broadcasts from the NW due to an illegal migrant with an illegal TV.
Attached Images
File Type: png 11695-181024-0713-0901-TPR.png (35.2 KB, 123 views)

Last edited by tpreitzel : 24-10-2018 at 23:57.
tpreitzel is offline   Reply With Quote
Old 25-10-2018, 00:01   #9
Digger
Registered User
 
Digger's Avatar
 
Join Date: Mar 2005
Location: Shizuoka City, Japan
Posts: 9,821
24th Oct.

China National Radio logged for 71 minutes from 0750-0900 UTC. This afternoon the configuration was 14,56 kbps, UEP(22,2%), AAC, Mono. B10 kHz, 2s, 4/16 QAM, P1/1, Audio:1 / Data:0. Time is Chinese UTC+8.
Max.20,72 dB SNR and 97,02% decoded audio.

The last 75 minutes of the transmission is the best here (so far). I wonder why they use UEP instead of the more common EEP?
Attached Images
File Type: png 11695-181024-0750-0900-Hatori.png (42.2 KB, 115 views)
__________________
Regards,
Terje

https://www.hobbyradio.se/en/drm/web....index_en.html
Digger is offline   Reply With Quote
Old 25-10-2018, 09:54   #10
Digger
Registered User
 
Digger's Avatar
 
Join Date: Mar 2005
Location: Shizuoka City, Japan
Posts: 9,821
25th Oct.

China National Radio logged for 485 minutes from 0055-0900 UTC. Today the configuration again was 14,56 kbps, UEP(22,2%), AAC, Mono. B10 kHz, 2s, 4/16 QAM, P 1/1. Audio: 1 / Data:0, Time is Chinese UTC+8. Some TX breaks around 0810 UTC. Best reception was from 0530 until 0900: Max. 23,61 dB SNR and 97,33% decoded audio.
Max. 23,61 dB SNR and 74,28% decoded audio for the whole transmission.
Attached Images
File Type: png 11695-181025-0055-0900-Hatori.png (45.8 KB, 120 views)
File Type: png 11695-181025-0530-0900-Hatori.png (43.2 KB, 121 views)
__________________
Regards,
Terje

https://www.hobbyradio.se/en/drm/web....index_en.html
Digger is offline   Reply With Quote
Old 26-10-2018, 11:36   #11
Digger
Registered User
 
Digger's Avatar
 
Join Date: Mar 2005
Location: Shizuoka City, Japan
Posts: 9,821
26th Oct.

This morning the reception of 11695 was very weak. This log was taken until the end of the transmission.

China National Radio logged for 73 minutes from 0746-0859 UTC. Some decoding problems 0815 UTC due to RFI from a switched power supply in the room (see the comments in the log).

Max. 23,76 dB SNR and 98,90% decoded audio.
Attached Images
File Type: png 11695-181026-0746-0859-Hatori.png (42.3 KB, 109 views)
__________________
Regards,
Terje

https://www.hobbyradio.se/en/drm/web....index_en.html

Last edited by Digger : 26-10-2018 at 11:41.
Digger is offline   Reply With Quote
Old 27-10-2018, 13:55   #12
Digger
Registered User
 
Digger's Avatar
 
Join Date: Mar 2005
Location: Shizuoka City, Japan
Posts: 9,821
27th Oct.

China National Radio Part 1 logged for 115 minutes from 0106-0301 UTC. The log was terminated by mistake, because I switched the PC to stand-by. Max. 17,64 dB SNR and 89,66% decoded audio.

China National Radio Part 2 logged for 185 minutes from 0556-0901 UTC. A TX break around 0607 UTC and later suddenly Radio France International started in AM on an adjacent channel for some 6 minutes. There was yet another TX break around 0833 UTC. Despite these problems, in all it was very good. Max. 24,99 dB SNR and 92,37% decoded audio (breaks and QRM included).
Attached Images
File Type: png 11695-181027-0106-0301-Hatori.png (41.6 KB, 112 views)
File Type: png 11695-181027-0556-0901-Hatori.png (45.4 KB, 117 views)
__________________
Regards,
Terje

https://www.hobbyradio.se/en/drm/web....index_en.html
Digger is offline   Reply With Quote
Old 29-10-2018, 10:04   #13
Digger
Registered User
 
Digger's Avatar
 
Join Date: Mar 2005
Location: Shizuoka City, Japan
Posts: 9,821
29th Oct.

China National Radio logged for 491 minutes from 0051-0902 UTC. There was a TX break around 0527 UTC, but no configuration changes. Max. 25,37 dB SNR (about 40 dBV) and 95,61% decoded audio for the whole transmission.
Attached Images
File Type: png 11695-181029-0051-0902-Hatori.png (46.4 KB, 115 views)
__________________
Regards,
Terje

https://www.hobbyradio.se/en/drm/web....index_en.html
Digger is offline   Reply With Quote
Old 30-10-2018, 03:43   #14
Digger
Registered User
 
Digger's Avatar
 
Join Date: Mar 2005
Location: Shizuoka City, Japan
Posts: 9,821
30th Oct.

China National Radio logged for 125 minutes from 0058-0303 UTC. There was a longer TX break from 0527 UTC, but no configuration changes. Max. 24,39 dB SNR and 75,06% decoded audio for the whole log.
Attached Images
File Type: png 11695-181030-0058-0303-Hatori.png (45.6 KB, 107 views)
__________________
Regards,
Terje

https://www.hobbyradio.se/en/drm/web....index_en.html
Digger is offline   Reply With Quote
Old 01-11-2018, 09:31   #15
Digger
Registered User
 
Digger's Avatar
 
Join Date: Mar 2005
Location: Shizuoka City, Japan
Posts: 9,821
1st Nov. 2018

China National Radio logged for 114 minutes from 0656-0850 UTC. The transmission ended some 10 minutes earlier than scheduled. Max. 23,12 dB SNR and 99,92% decoded chopped up audio. Something must be wrong.
Attached Images
File Type: png 11695-181101-0656-0850-Hatori.png (40.5 KB, 118 views)
__________________
Regards,
Terje

https://www.hobbyradio.se/en/drm/web....index_en.html
Digger is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Forum Jump


All times are GMT. The time now is 04:48.


Powered by vBulletin Version 3.5.3
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.