[A-DX] Fwd: VOA Radiogram, 14-15 December 2013

[H. Denzel]

73 Harald

Anfang der weitergeleiteten E‑Mail:

Von: Harald Denzel <>>
Datum: 12. Dezember 2013 22:00:13 MEZ
An: <>>
Betreff: Fwd: VOA Radiogram, 14-15 December 2013



Von meinem iPhone gesendet

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Von: VOA Radiogram <>>
Datum: 12. Dezember 2013 21:34:39 MEZ
An: VOA Radiogram <>>
Betreff: VOA Radiogram, 14-15 December 2013

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Hello friends,

Our experiment last weekend with MFSK64 images on center audio frequencies of 1500 versus 1000 Hz resulted in more interference lines on the 1000 Hz images. The second audio harmonic at 1000 to 3000 Hz overlapping the fundamental at 500 to 1500 Hz may be the cause. See some examples at
voaradiogram.net/post/69513314899/the-effect-of-audio-harmonics-on-mfsk64-images<http://voaradiogram.net/post/69513314899/the-effect-of-audio-harmonics-on-mfsk64-images>

YouTube videos of last weekend's VOA Radiogram, kindly contributed by listeners, are here:
voaradiogram.net/post/69585204552/voa-radiogram-7-8-december-2013-in-youtube-videos<http://voaradiogram.net/post/69585204552/voa-radiogram-7-8-december-2013-in-youtube-videos>. You can watch the decoding on the videos, or use the audio from the videos to decode the data yourself.

VOA Radiogram this weekend will include news about international media from VOA's "sister" broadcasters Radio Free Europe/Radio Liberty (RFE/RL) and Radio Free Asia (RFA).

Here is the lineup for VOA Radiogram, program 37, 14-15 December 2013:

   1:31  MFSK16: Program preview (2:32)
 4:03  MFSK32: DDoS attack on RFE/RL, with image (3:50)
 7:53  MFSK32: Reorganization of Russian media, with image (5:08)
13:52  MFSK64: Foreign journalists in China, with image (5:06)
18:58  MFSK64/Flmsg: Ancient Martian lake, with image (5:17)
24:20  MFSK64: Image of National Christmas Tree (2:28)
26:57  MFSK32: Closing announcements (:40)

Please send reception reports to >.

Screenshots and audio samples are also appreciated. Audio of reception in the presence of interference from other shortwave broadcast stations or from local noise sources is especially helpful.

VOA Radiogram transmission schedule
(all days and times UTC)
Sat 1600-1630 17860 kHz
Sun 0230-0300 5745 kHz
Sun 1300-1330 6095 kHz
Sun 1930-2000 15670 kHz
All via the Edward R. Murrow transmitting station in North Carolina.

Thanks for your reports from the past weekend. I'll try to respond to everyone before this weekend's broadcasts begin.

I hope to hear from you this weekend.

Kim

Kim Andrew Elliott
Producer and Presenter
VOA Radiogram
voaradiogram.net<http://voaradiogram.net>

PS: There will be a minute of MFSK32 from The Mighty KBC, Saturday 14 December at about 1230 UTC on 6095 kHz, and Sunday at about 0130 UTC on 7375 kHz, both frequencies via Germany.