Saturday, April 13, 2013

It's Olivia Week for VOA, Others

Olivia is a ham MFSK digital mode with a known robustness.  It's logical that it be compared with straight MFSK, and that's just what's happening in about 45 minutes.


VOA Radiogram on 13/14 April 2013 will feature Olivia modes

VOA Radiogram for the weekend of 13/14 April 2013 will feature the Olivia modes, with MFSK modes also transmitted for comparison.

The modes will be transmitted in groups of three, and all will be centered on an audio frequency of 1500 Hertz, except where indicated:

Olivia 8-1000, 58 WPM, 1:32 (program menu)
MFSK 16,  58 WPM, 1:52
Olivia 8-1000, 58 WPM, 1:44

Olivia 32-2000, 50 WPM, 2:09
MFSK 22, 80 WPM, 1:50
Olivia 16-2000, 80 WPM, 1:51

MFSK 32, 120WPM, 2:04
Olivia 8-2000, 120WPM, 2:04
Olivia 4-2000, 160WPM, 1:40

Olivia 16-1000 (centered on 2000 Hz) versus music, 2:03

MFSK 32 closing text and image,  :51

Reception reports with (if possible) sample audio and screenshots would be appreciated. Audio files from outside the United States are especially helpful.
Twitter: @VOARadiogram

Here is the VOA Radiogram broadcast 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.


The Mighty KBC and PCJ Radio also transmitting Olivia text this weekend

In addition to the Olivia mode transmissions this weekend on VOA Radiogram, two other shortwave broadcasters will be sending content in Olivia.

The Mighty KBC will, as usual, include digital text modes in its North America broadcast, 14 April 2013, 0000-0200 UTC, on 7375 kHz via Nauen, Germany. At about 0133 UTC, Olivia 8-1000 will be centered on 1000 Hertz, and MFSK 16 on 2000 Hertz. Both modes are slow (less than 60 WPM) but robust. At just before 0200, a Flmsg formatted message in Olivia 8-2000 will be centered on 1500 Hertz. (To make Flmsg work, in Fldigi: Configure > Misc > NBEMS > under Reception of flmsg file check Open with flmsg and Open in browser, and under that state where your Flmsg file is located.)

PCJ Radio, based in Taiwan, will again transmit text on 14 April 2013 at 0227 UTC via WRMI, Radio Miami International, 9955 kHz. The mode will be Olivia 8-1000.