This is partially a language problem. A complete block diagram of both the transmit and receive sides of the system would do wonders to clarify what the system actually is. The partial receive diagram surely looked like MSK to me.
From: jose alberto nieto ros <nietoro...@yahoo.es> Reply-To: <digitalradio@yahoogroups.com> Date: Tue, 23 Feb 2010 23:14:07 +0000 (GMT) To: <digitalradio@yahoogroups.com> Subject: Re: [digitalradio] Re: Consensus? Is ROS Legal in US?` John, the only person in the world who know what is ROS is the person who have created it. And the creator say that ROS is a FSK of 144 tones with a Viterbi FEC Coder and a header of synchronization. De: John <ke5h...@taylorent.com> Para: digitalradio@yahoogroups.com Enviado: mié,24 febrero, 2010 00:06 Asunto: [digitalradio] Re: Consensus? Is ROS Legal in US?` Thank you Andy ...... This has been the point of many [posters here all along. It is only considered spread spectrum because the author claimed it so, not because it is technically so. Jose, are you hearing us? because of the way your program operates an SSB transmitter, it "should" be defined as a form of FSK, "NOT SPREAD SPECTRUM" .... Many of us here in the US would like to use your program and experiment with it, but we are regulated by the FCC (we US hams did not write the rules we have to abide by). They determined it to be spread spectrum solely because you have declared it as such, and apparently for no other reason. Can you offer us some help here Jose? (like maybe recheck if it really is spread spectrum vs FSK) and re-write your description? Thanks, John KE5HAM --- In digitalradio@ yahoogroups. com <mailto:digitalradio%40yahoogroups.com> , Andy obrien <k3uka...@.. .> wrote: > > The FCC has stated , today, that IF the author describes it as spread > spectrum, the USA ham is responsible for determining the accuracy of this > claim. They also affirmed that SS is not legal below 220 Mhz. The ARRL > technical folks said today that , based on the description available, they > believe it is SS and not legal in the USA below 220 Mhz. > > So the ARRL seems pretty clear. The FCC leaves some wiggle room for the ham > that feels confident enough to withstand a potential future challenge from > the FCC. Logic would dictate that if the FCC comes knocking, it world be > hard to say it is NOT SS...if the author AND the FCC decide that it is. > > e,g. If I came out with a "new" mode that was just CW, but claimed it was > SS, the average ham would be able to easily prove my claim wrong IF the FCC > ever tried to take action against someone for using it. However, if a new > mode appeared technically close to SS, it would be hard to prove the FCC > wrong. If Jose re-wrote his description and dropped any reference to spread > spectrum and frequency hopping, those USA hams using it would be safe unless > the FCC decided for some odd reason to investigate the mode formally and > make a ruling. If Jose maintains his description, the mode is not likely to > get any use in the USA. > > > Andy K3UK >
