The FCC has actually analyzed the mode (to my surprise!) and says it is
SS, and we are obliged to accept their determination. To use it, someone
just must file a petition to change the regulations.
73, Skip KH6TY
On 7/20/2010 11:03 AM, Siegfried Jackstien wrote:
They would say ... you know the rules and you have to follow the rules
The thing is ... who has to make the technical decision if ros is
spread spectrum so forbidden in us (answer: the user)
Next thing is ... is ros really ss??? What I know about ss is sender
and receiver are spreading the data very wide
Factor 10 is minimum to say it is ss but normally far more is used
In ros the spreading factor is very small ... and so it looks more
like mfsk on the air
For me as I am no professional in data transmissions it looks like it
is afsk (like many other soundcard modes)
Does the ham need to have the knowledge how the tones are calculated???
If the tones are spread spectrum or not??
What about digital sstv modes?? How can a user know if the used
bandwith is (much) more as needed??
Any fec mode uses more bw or more time as needed for a non fec
transmission
Why not just modify the rules a bit
Frequency hopping or wide spread spectrum only above 220
And the narrowband ss modes like ros and all other modes (incl. chip,
Olivia and similar) can be used on shortwave if the bw is lower as 3kc
(like her in dl).....surely with sdr wider ss modes could be used ...
but not allowed
Synced frequency hopping with sdr would also be possible ... but not
allowed
Just say ... any mode bw <3kc ....(exceptions possible like >0.5kc on
30m or historical am transmissions)
That would be easy
All modes should be free available to anybody (so fcc cia mi6 etc can
download the soft and use it too)
Modes where you need special hardware are only allowed if the
developer also gives a free software solution (for receive only)
(hello d-star, hello scs) ....for monitoring
Think about > changing your rules is easier as trying to tel ros is
not ss .... Cause next new mode will come soon ... and story returns
... so change your laws in us
73
Sigi
Ps: I am glad that I live not in the land of freedom hi hi J
