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07-03-2012, 11:20
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#1 |
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Registered User
Join Date: Mar 2005
Location: Stockholm, Sweden
Posts: 7,360
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15120 kHz Voice of Nigeria from Abuja
A test transmission from Voice Of Nigeria. Low bitrate but fairly good sound when they played music but terrible when they started talking. Riyadh killed the fun just before 12 UTC.
Last edited by Digger : 07-03-2012 at 11:26. |
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07-03-2012, 11:32
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#2 |
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Registered User
Join Date: Jun 2005
Location: N59° 37' / E17° 50' Marsta Sweden
Posts: 2,770
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Test transmission from VON . Log 57min.
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07-03-2012, 14:41
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#3 |
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Registered User
Join Date: Jun 2005
Location: N59° 37' / E17° 50' Marsta Sweden
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More test transmission Log 2h 14min. But very problem for strong AM .
Vet good TX SNR up to 32.5dB ... |
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07-03-2012, 15:17
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#4 |
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Registered User
Join Date: Dec 2006
Location: Northern Germany
Posts: 663
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I clicked the checkbox to log the reception, however, DREAM did not write anything usefull for the plotter into the files.
At least it recorded this: SNR min: 3.1, max: 19.7 (I guess the max. was at about 1440 UTC when I stopped the log)
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RX: Digital World Traveller & HCJB-Pappradio |
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08-03-2012, 08:35
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#5 |
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Registered User
Join Date: Jun 2005
Location: N59° 37' / E17° 50' Marsta Sweden
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Log this morning 51min. Very strong signal ,but very bad audio !!!! BW3kHz
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08-03-2012, 08:53
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#6 |
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Registered User
Join Date: Mar 2005
Location: Stockholm, Sweden
Posts: 7,360
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My log resembles Sixten's very much in regard to the Doppler values. A few drop-outs might have been due to the use of electric machinery in the house. The transmission ended suddenly at 0920 UTC.
I think that the audio was pretty good despite the low bitrate. The levels were perfect and the vocals sounded rather good even though the audio bandwidth was limited to 3000 Hz. (Thanks Simone for fixing the headline) |
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08-03-2012, 14:58
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#7 |
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Registered User
Join Date: Jun 2005
Location: N59° 37' / E17° 50' Marsta Sweden
Posts: 2,770
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More log today. Very strong AM in 1503 log. Last.
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08-03-2012, 17:55
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#8 |
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Registered User
Join Date: Mar 2005
Location: Stockholm, Sweden
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An unattended log from this afternoon. Severe co-channel QRM from a 500 kW AM TX in Saudi-Arabia. By the way, Voice Of Nigeria is not scheduled for this time of the day on 15120 kHz.
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09-03-2012, 10:32
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#9 |
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Registered User
Join Date: Jun 2005
Location: N59° 37' / E17° 50' Marsta Sweden
Posts: 2,770
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Very good signal stringth this morning 44dbuV from start down to 28dbuV 1120UTC Log 1h 40min.
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09-03-2012, 13:45
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#10 |
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Registered User
Join Date: Mar 2005
Location: Stockholm, Sweden
Posts: 7,360
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Nearly perfect reception this morning. Nice text message: "Test with THOMSON transmitter TSW2300D. 125 kW, fixed curtain antenna to North. Greeting from Abuja, Nigeria."
Is this only a temporary test, or will they continue until I arrive back in Switzerland around the 25th March? @Simone: Thanks, dunno what happened there... Five views down the drain - hihi  OK, the whole window must be on the desktop... I see...Last edited by Digger : 09-03-2012 at 17:44. |
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09-03-2012, 17:02
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#11 |
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simone
Join Date: Jan 2003
Location: Bad Salzschlirf, Hessen, Germany
Posts: 10,141
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Not as good over here.
@ Digger: Can you please check your attachment. As far as I know it is only a test transmission for now. Simone |
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12-03-2012, 10:42
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#12 |
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Registered User
Join Date: Jun 2005
Location: N59° 37' / E17° 50' Marsta Sweden
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Log 3h 19min. Propagation better today on 15Mhz . Signal stringth was S9+20dB in start. And down to S9 in stop time. 1130.UTC
Her is report this morning Bodo. And picture of 15Mhz band this morning. Last edited by Sixten : 12-03-2012 at 10:50. |
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12-03-2012, 11:17
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#13 |
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Registered User
Join Date: Mar 2005
Location: Stockholm, Sweden
Posts: 7,360
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Almost perfect reception except towards the end in this mostly unattended log. I heard the start and listened for an hour or so, then I had to leave. The Doppler was fairly high at times, the SNR dipped suddenly around 0835 UTC but around 0912 it rose again suddenly. Perhaps this was caused by splatter from an adjacent channel. SNR peaked at 24 dB on my Roadstar, which never produces much higher values.
Last edited by Digger : 12-03-2012 at 15:48. |
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12-03-2012, 15:39
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#14 |
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Registered User
Join Date: Dec 2006
Location: Northern Germany
Posts: 663
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Just found this on German A-DX mailinglist:
> Bodo, 5N7Q, is in Abuja since last Wednesday, testing everyday on 15120 > and 11770 kHz DRM. > > Official inauguration ceremony on 13 March from 0800 till 1200 UTC with > special broadcast on 15120 kHz DRM (including Nigerian President speaking > live around 0930 UTC). (Harald Kuhl, via DXplorer, forwarded to A-DX by Wolfgang Büschel)
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RX: Digital World Traveller & HCJB-Pappradio |
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12-03-2012, 21:41
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#15 |
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simone
Join Date: Jan 2003
Location: Bad Salzschlirf, Hessen, Germany
Posts: 10,141
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Quite good results in the first 2.5 hours, nothing received on the other frequency today.
Simone |
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