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Old 22-02-2020, 18:54   #961
FritzWue
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DRM was not invented to transmit audio at the lowest AM audio quality level like AIR does. The signal is very strong here, but it sounds worse than wide band AM.
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Old 23-02-2020, 16:29   #962
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Quote:
Originally Posted by FritzWue
but it sounds worse than wide band AM.

Sounds worse than even narrow band AM!
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Old 25-02-2020, 17:01   #963
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Strong signal here this evening, and just mentioned the address of their new website, which looks fine and has downloadable frequency schedule, but no longer seems to have Listener's Corner or a reception reporting form.

http://airworldservice.org/english/
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Old 27-02-2020, 18:55   #964
FritzWue
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Good rf reception until 19:00 UTC when an AM station started transmission on the same frequency.
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Old 01-03-2020, 19:33   #965
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Obviously they switch the antenna at 20 UTC, big difference with me:
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Old 02-03-2020, 19:05   #966
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A result for 120 mins. 97.9% CDA / 27.8 dB max SNR.

After 19:50 co-channel QRM appeared.
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Old 05-03-2020, 18:22   #967
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A result for 51mins @ 99.8% CDA / 25.7dB max SNR.
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Old 06-03-2020, 18:32   #968
FritzWue
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The big dropout was caused by overloading the little MSI.SDR without input preselector filters. Switching from the 40m dipole to the 80m band dipole reduced the big signal levels around 5 to 8 MHz and all was OK again.
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Last edited by FritzWue : 06-03-2020 at 19:34.
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Old 07-03-2020, 19:58   #969
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Todays result:
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File Type: png 7550_200207_2044_DK6QI.png (8.2 KB, 23 views)
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Old 08-03-2020, 18:48   #970
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Decoded Audio: 99.99%, good reception but bad audio:
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