Thursday, July 04, 2013

All MFSK on VOA Radiogram for July 6-7

From Kim Andrew Elliott:

This weekend, we will take a break from EasyPal. But don't worry EasyPal fans, EasyPal will return soon to VOA Radiogram.

This past weekend, many of you noticed distorted audio on the transmitter. I did, too. It was caused by a problem with the the audio patching system at the Edward R. Murrow transmitting station in North Carolina. The interesting thing is that even though voice and music were difficult to listen to, the MFSK text decoded well for most of us. MFSK text seems highly tolerant of distortion.

This weekend, VOA Radiogram will consist entirely of MFSK text and images. We still need more data on how MFSK text copes with co-channel noise, so if you can introduce noise at your location, at least during the MFSK16 and first MFSK32 VOA News story, that would be helpful. This could be done by turning on an appliance in your house that is notorious for generating RF noise. Or move your portable radio or antenna to a place where RF noise occurs.

Here is the lineup for VOA Radiogram, July 6 and 7, 2013:

2:26  MFSK16: Program preview
4:00  MFSK16: VOA News about solar cells
4:21  MFSK32: VOA News about fires in Indonesia
1:55  MFSK32: Accompanying photo
4:18  MFSK32: VOA News about India's Science Express train
2:35  MFSK32: Accompanying photo
2:30  MFSK64: VOA News about solar observation satellite
1:50  MFSK32: Accompanying photo
1:08  MFSK16: Closing announcements
 :21  Surprise mode of the week

Please send reception reports to  
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.