Thursday, May 28, 2015

Very Interesting VOA Radiogram for 30-31 May

From Kim Andrew Elliott:

Hello friends,

It has been several months since we last transmitted slow scan television (SSTV) on VOA Radiogram.  Emiliano in Italy notes that the International Space Station has been using the PD180 SSTV mode. He suggested that we compare PD180 SSTV images with our usual MFSK32 images. And, so, we will do that this weekend.

To decode PD180, download MMSSTV from . (In theory, MultiPSK also decodes PD180, although I have not yet successfully decoded PD180 using MultiPSK.)

In the MMSSTV interface, under RX Mode, right-click on any mode to reveal the complete list of modes. Left click on the mode for it to appear in the main menu.  "Auto" under RX Mode should detect that PD180 is the  mode, but to be safe, manually select PD180.

After the image is fully decoded, you can right click on the image, then Copy it to MS Paint or other program that lets you save images. Or, by clicking on MMSSTV's History, you can use the left-right arrows to find the image you have decoded, then use the copy icon, or right-click to copy.

Another twist in this weekend’s show will be the transmission schedule in Olivia 64-2000 16 dB under the closing music. That will be followed by the usual “thank you” message, also in Olivia 64-2000, but at full level. The RSID will not be sent during the second Olivia 64-2000 transmission, so if you missed it at -16dB, set the mode manually.

Here is the lineup for VOA Radiogram, program 113, 30-31 May 2105, all in MFSK32 except where noted …

 1:33  Program preview
 2:50  Science of nighttime thunderstorms*
 8:21  Plankton are a major source of oxygen*
15:06  Volcano on Galapagos
18:08  SSTV PD180 test
21:28  Same image (but smaller) in MFSK32
25:11  Closing announcements
26:12  Bonus mode: Olivia 64-2000 at -16dB
27 17  Olivia 64-2000 at full audio level

* with image

Please send reception reports to .

VOA Radiogram transmission schedule
(all days and times UTC):
  Sat 0930-1000 5745 kHz
  Sat 1600-1630 17870 kHz
  Sun 0230-0300 5745 kHz
  Sun 1930-2000 15670 kHz
All via the Edward R. Murrow transmitting station in North Carolina.

The Mighty KBC will transmit a minute of MFSK64 Sunday at about 0230 UTC (Saturday 10:30 pm EDT) on 9925 kHz (via Germany). This temporary time slot is one hour later than usual, and it coincides with the VOA Radiogram broadcast at the same time. If you have only one radio, decode from The Mighty KBC at 0230 UTC, then quickly retune to 5745 kHz for VOA Radiogram. Reports for the KBC MFSK64 to Eric: .  

Thank you for your reports from last weekend. I continue to be two weeks behind is responding to your emails, but I will try to improve that to merely one week behind.

I hope you can tune in and write this weekend.


Kim Andrew Elliott
Producer and Presenter
VOA Radiogram