[A-DX] VOA Radiogram, 28-29 November 2015

[Roger]

Am 27.11.2015 um 17:07 schrieb VOA Radiogram:
> The only advantage of the QR codes that I can think of is that 
> scanning the QR code is a slightly quicker way of accessing a web page 
> than copying and pasting the URL. The plain-text URL, however, enjoys 
> the advantage of error correction. Maybe future software can open a 
> selected URL in a browser. 


I think the current broadcast of QR codes in MFSK-32-pic-mode makes no 
sense.   Another mode should be used - a file transfer of 1: 1.
Then you can reduce the images to a minimum safe size.

For file transfer could be used EasyPal, or a text-based variant in FLDIGI.
Binary b64-encoded image files could then transferred in MFSK-32 TXT 
mode  (with error correction) as here as WRAP:

http://www.rhci-online.net/radiogram/VoA_Radiogram_2015-06-20.htm#flwrap


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For images without major requirements (for weak signals) analog SSTV 
versions are also very useful.
Advantages over MFSK32-pics:
- automatic slant correction
- never seen: inverted color areas
- never seen: shifted image surfaces


Transatlantic low level SSTV, like last night:

http://www.rhci-online.net/radiogram/VoA_Radiogram_2015-11-28.htm#wolverine

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Bad news for Dutch shortwave listeners:
http://www.rhci-online.net/radiogram/VoA_Radiogram_2015-11-28.htm#KBC

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And here the main story, the ionosphere did a good job
http://www.rhci-online.net/radiogram/VoA_Radiogram_2015-11-28.htm#VOA

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roger