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VOA Radiogram, Jan 18-19, includes MFSK32, 64, 64L

VOA Radiogram for the weekend of January 18-19 will include MFSK32, 64, and 64L (the new long interleave version of MFSK64L). One of the MFSK64L transmissions will be in Flmsg format, meaning that it will render as a web page on your display.Details here: voaradiogram.net/post/73631111300/voa-radiogram-18-19-jan-2014-includes-mfsk32-64-64L VOA Radiogram transmission schedule (all days and times UTC): Sat 0930-1000 5745 kHz Sat 1600-1630 …

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VOA Radiogram, 28-29 Dec, has DX potential

This weekend, VOA Radiogram begins its new transmission Saturday 0930-1000 on 5745 kHz. That’s very early in the morning in the Americas, but this broadcast might have a chance of being heard and decoded in Asia and northern Europe. Because of likely marginal reception conditions in distant places, there will be a VOA News story in the slow (55 wpm) …

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New VOA Radiogram transmission Sat 0930 UTC

Effective 28 December  2013, VOA Radiogram will add a new transmission Saturday, 0930-1000 UTC, on 5745 kHz. Because of interesting propagation this time of day, this broadcast has a chance of being heard and decoded in the Asia/Pacific region and in northern Europe, at least this time of year. To keep this schedule change budget-neutral, the VOA Radiogram broadcast Sunday at …

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VOA Radiogram, Dec 21-22, tries a different MFSK64 center frequency

It may be the holiday season, but the experiments continue on VOA Radiogram. Experiments for the weekend of December 21-22, 2013, involve MFSK64 at our usual center frequency of 1500 Hz, versus a center frequency of 1700 Hz. At a center frequency of 1500 Hz, the fundamental data is from 1000 to 2000 Hz. The second audio harmonic is from …

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VOA Radiogram, Dec 14-15, includes media news

VOA Radiogram for the weekend of December 14-15 includes international media news from VOA’s “sister” broadcasters RFE/RL and Radio Free Asia. Modes will be MFSK16, 32, and 64. More information: voaradiogram.net/post/69828157233/voa-radiogram-14-15-december-2013-international-media VOA Radiogram transmission schedule(all days and times UTC)Sat 1600-1630 17860 kHzSun 0230-0300 5745 kHzSun 1300-1330 6095 kHzSun 1930-2000 15670 kHzAll via the Edward R. Murrow transmitting station in North …

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VOA Radiogram, Dec 7-8, features MFSK32 and 64

VOA Radiogram for the weekend of 7-8 December will make more use of the robust MFSK32 mode to compensate for difficult trans-Atlantic propagation on our 15670 kHz frequency.  There will be several MFSK images, including one of the Capitol Christmas tree. And we will conduct one more experiment with audio harmonics. More information here: voaradiogram.net/post/69097193128/voa-radiogram-7-8-dec-2013-slowing-down-for-winter VOA Radiogram transmission schedule(all days …

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VOA Radiogram, Nov 23-24, includes Russian text

VOA Radiogram for the weekend of November 23-24, 2013, will include samples of Russian text transmitted in both MFSK32 and 64. Also more experiments with the new long-interleave mode MFSK128L, several images, and some surprises. More information: voaradiogram.net/post/67789432746/voa-radiogram-23-24-november-2013-will-include VOA Radiogram transmission schedule(all days and times UTC)Sat 1600-1630 17860 kHzSun 0230-0300 5745 kHzSun 1300-1330 6095 kHzSun 1930-2000 15670 kHzAll via North …

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VOA Radiogram, 16-17 November 2013, includes Chinese at two speeds

When we last transmitted Chinese characters on VOA Radiogram, we noted that they printed out more slowly than English letters. This is no doubt due to the greater complexity of the code involved with non-Latin alphabets. This weekend we will transmit Chinese characters in MFSK32, then try to speed it up with MFSk64. Make sure you have Fldigi set to …

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VOA Radiogram, 9-10 November, will include Thor100

VOA Radiogram is a Voice of America program experimenting with digital text and images via shortwave broadcasting. It is produced and presented by Dr. Kim Andrew Elliott. VOA Radiogram, 9-10 November, will include Thor100VOA Radiogram during the weekend on 9-10 November 2013, will be a bit different. In addition to the usual MFSK modes, we will transmit Thor100. We will …

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VOA Radiogram, 2-3 Nov 2013, continues tests of new MFSK64L and MFSK128L modes

Last week we experimented with the new long-interleave versions of MFSK64 and MFSK128. For some of you, when the MFSK64L or MFSK128L modes began transmitting, your Fldigi software crashed or froze.The cause for that has been identified, and newer versions of Fldigi should alleviate the problem. Use Fldigi 3.21.76AT or later. The current alpha version of Fldigi, used to produce …

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VOA Radiogram, Oct 26-27, will test new MFSK64L and 128L modes

The new long-interleave versions of MFSK64 and MFSK128 will be tested on VOA Radiogram during the weekend of October 26-27 2013. MFSK64L and MFSK128L are fast modes, but with the interleaving, they might be able to withstand the rigors of long distance shortwave. More information here: http://voaradiogram.net/post/65034406922/voa-radiogram-26-27-october-includes-new-long The VOA Radiogram schedule is unchanged in the B13 season: (all days and …

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VOA Radiogram returns with new programs

With the US government shutdown is over, I returned to work Thursday and quickly put together a new VOA Radiogram for this weekend, 19-20 October. It will include another transmission of the same picture in MFSK 16, 32, 64, and 128. This weekend’s modes: 2:53  MFSK16: Program preview7:22  MFSK16/32/64/128: Same image in each mode3:38  MFSK32: SpaceX launch, with image3:34  MFSK64: …

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