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

So Nov 29 16:56:06 CET 2015

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:


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:



Bad news for Dutch shortwave listeners:

And here the main story, the ionosphere did a good job