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Hi Graham,
Am 27.12.2013 21:39, schrieb Graham:
There are plenty of commercial data mode systems in
use on the Ham bands that are locked and not publicised ,
from my experience , the locked systems seem to give a
superior level of performance to the open code versions ,
pactor-4 being a good example , using modern ss techniques
achieves high data/power ratio , but missing is the cdma
layer that would enhance b/w user efficiency , but that
exists in another locked data mode , which is free
So where /what is the problem ?
There's no problem with commercial / locked systems being used on
the ham bands, as long as the mode itself is open, properly
specified or even documented (take PSK31, Joe's WSPR, or Stewart's
WOLF for example); not plagued by software patents (which prevents
it from being implemented by others, for example "D-Star" which is
based on a proprietary codec, which imho makes it uncompatible with
amateur radio).
Fortunately others have taken a deep dive into Opera and
successfully reverse-engineered it, which -ideally- should not have
been necessary if the mode was properly documented by its creator.
The problem I had -with the original Opera software- was that when
trying to download it, my browser was immediately hijacked by
commercial ads... trying to sell me all kinds of stuff but not a
simple (stupid-_javascript_-less) file link to O-P-E-R-A ... been
there, won't try again.
73,
Wolf .
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