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Old 09-12-2014, 16:16   #706
AF4MP
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Nigeria 15120 kHz reception near Atlanta, Georgia, USA

Yesterday afternoon's reception - started logger 38 minutes late.
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Old 10-12-2014, 19:49   #707
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Decoded audio 42,67% (19:37 - 19:58h UTC)
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Old 10-12-2014, 21:00   #708
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Barely a trace of signal this afternoon.
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Old 11-12-2014, 21:05   #709
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Nigeria 15120 kHz reception near Atlanta, Georgia, USA

This afternoon's reception - signal briefly picked up for a few minutes at ~1830 - 0.24% audio decoded, 7.45 dB max SNR.
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Old 13-12-2014, 13:31   #710
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Nigeria 15120 kHz reception near Atlanta, Georgia, USA

Yesterday afternoon's reception - 0.08% audio decoded, 8.23 dB max SNR.
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Old 14-12-2014, 21:29   #711
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Nigeria 15120 kHz reception near Atlanta, Georgia, USA

This afternoon's reception - 1.68% audio decoded, 10.58 dB max SNR.
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Old 17-12-2014, 11:31   #712
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Nigeria 15120 kHz reception near Atlanta, Georgia, USA

Yesterday afternoon's reception - 1.06% audio decoded, 9.10 dB max SNR.
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Old 17-12-2014, 21:02   #713
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Nigeria 15120 kHz reception near Atlanta, Georgia, USA

This afternoon's reception - no audio decoded, ~3 dB max SNR (the 6.26 value in the log window is a DRM phantom spike).
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Old 18-12-2014, 21:01   #714
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Logger received no signal this afternoon.
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Old 20-12-2014, 21:04   #715
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Nigeria 15120 kHz reception near Atlanta, Georgia, USA

This afternoon's reception - poor conditions - no audio decoded, 6.99 dB max SNR.
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Old 28-12-2014, 19:31   #716
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Hi,
Signal get strong at end, MSC decoded, but no audio stream (silence). Some Intern unplug audio cable?
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Old 01-01-2015, 11:39   #717
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Nigeria 15120 kHz reception near Atlanta, Georgia, USA

Yesterday afternoon's reception - 30.60% audio decoded, 15.32 dB max SNR.
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Old 01-01-2015, 19:09   #718
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Nigeria 15120 kHz reception near Atlanta, Georgia, USA

This afternoon's reception - 57.65% non-audio decoded, 15.13 dB max SNR.

No audio just beautiful digital silence. The Evaluation Audio Spectrum screen was blank.
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Old 02-01-2015, 04:57   #719
PP5AZF-Ataliba
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Quote:
Originally Posted by AF4MP
This afternoon's reception - 57.65% non-audio decoded, 15.13 dB max SNR.

No audio just beautiful digital silence. The Evaluation Audio Spectrum screen was blank.


Maybe they're transmitting audio with the new codec "xHEAAC-v2" and, for this reason, our systems would not be able to decode? MSC is 100%, but there is no audio, only silence. This is already happening are several days. The engineering of transmission does not realize that is without modulation decoding? perhaps are using receivers that decode both codecs "HEAAC-v2" and "xHEAAC-v2"?

************************************************** **

Talvez estejam transmitindo audio com o novo codec "xHEAAC-v2" e, por este motivo, nossos sistemas não seriam capazes de decodificar? o MSC está 100%, porém não há áudio, somente silêncio. Isso já está acontecendo fazem vários dias. A engenharia de transmissão não perceberia que está sem modulação na decodificação? talvez estejam utilizando receptores que decodificam ambos os codecs "HEAAC-v2" e "xHEAAC-v2"?

************************************************** ***
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Plataforma Brasileira do Digital Radio Mondiale
www.drm-brasil.org

ABRADIG - Associação Brasileira de Radio Digital
www.abradig.org.br

Amostras de áudio de algumas rádios DRM:
www.zandomenego.com/ataliba/drm

Youtube channel:
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Old 02-01-2015, 09:58   #720
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Hi Ataliba,

I think that at the transmitter site nobody is monitoring their signal!
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