Thursday, May 16, 2013

VOA Radiogram transmission schedule

In VOA Radiogram for the weekend on 18 and 19 May, we will continue to experiment with images. In fact, we will transmit the same picture three ways: in two SSTV modes and then as an MFSK32 image. Bring something to read, or an electronics project, because these picture transmissions will take 4 to 5 minutes each.
To decode the SSTV modes, several software programs are available. They include the RX-SSTV (receive only) from , MMSSTV from , and Digital Master 780, part of the Ham Radio Deluxe suite, from .
Before the images will be two VOA news stories in MFSK32 text, with the usual center audio frequency of 1500 Hz. The second story is in French, as we continue to determine if accented letters appear correctly on your display.
To view accented characters in Fldigi: Configure > Colors & Fonts > next to Select Char Set, select UTF-8. To keep your selection of UTF-8, under Configuration, click Save Config.  
Here is the lineup for VOA Radiogram the weekend on 18 and 19 May:
2:55        MFSK16 Program preview
1:59        MFSK32 VOA News in English
4:03        MFSK32 VOA News in French
1:07        MFSK16 Intro to SSTV transmissions
4:31        Scottie DX SSTV
 :10        Tone (to give you time to save your Scottie DX image)
5:08        Pasokon P5 SSTV
 :25        MFSK16 intro to MFSK32 image
4:07        MFSK32 image
1:10        MFSK16 closing announcements
1:22        Surprise mode of the week (mixes somewhat with the closing music)                                   
On VOA Radiogram during the weekend of 25-26 May, we will experiment with the Easypal digital SSTV mode, comparing it to MFSK32. Please download Easypal from . Easypal images are transmitted by radio amateurs on 14233 kHz.
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.
This weekend, there will also be digital transmissions from Radio Australia:
And The Mighty KBC: