Hi Dave, ( AA6YQ ) Thanks. I might just do that next Monday.
I understand it to be, some help/emergency phone line? Lost the number, so if you have it, please send it to me. I am also very much interested in your definition of ss. I have not been able to find anything, Wikipedia really does not count in this case. I thought, that there has to be a direct specific connection between the transmitter and the receiver on how to retrieve the "info" from the spread spectrum. ( SS for dummies ) This makes it useful for the militairy, for who it was originally designed and in the case of cell phones, for instance, the code recovery algorithm is programmmed in the system, not secret, I assume, but still hard to figure. I thought cell phones run over 1,5 Mhz wide spreading. Is this true? I for one have never thought or learned much about SS. ( 75 yrs and retired and I am sure some will say you know what ) 3000 Hz info band -> 1.5 10 e+6,Hz ? Anyway what is so frustrating to me here, is that I do not see a straight definition of SS written in a published book that I can cross reference. I have the ARRL SS source book, and there, all I can find is that SS spreads the "info band" width between 10 and 100 times. Also I thought if one looks with a Spectrum Analyzer,( I have never done that, ) to a SS signal, is is hard to see the side bands. Signals so weak and so random, perhaps semi- that one can have a large number of those side bands from different transmitters overlapping without causing problems in the communication process. Just a INCREASED noise level, that would seriously be a problem for EME, for instance, it would cover up the natural background or with other words, increase the noise temperature, Now here you have a few simple concepts, it is crazy talk yes or no? Please feel free to tell your views with a basis, where I can look it up myself. I asked before for a peer reviewed paper "SS for laypersons or dummies" I do only WSJT on HF and on EME as group member, please someone explain to me why WSJT is, what? It appears to be legal? What is the difference between JT65C and ROS when it relates to the SPREAD Spectrum properties, WSJT has a smart and efficient info packing scheme that makes it pretty much an all or nothing system. ROS, produces a lot of errors, if the signal strenght goes down after the start, but that is not a SS issue, Please explain to me and perhaps quite a few others what SS is, other than that is "Wide" Im my own mind the width has not really too much to do with it? True or false. All straight layman's questions, so who answers them, most of us like to learn and understand a little. 73 Rein W6SZ -----Original Message----- >From: Dave AA6YQ <aa...@ambersoft.com> >Sent: Mar 5, 2010 11:28 PM >To: digitalradio@yahoogroups.com >Subject: RE: [digitalradio] Re: ARRL/FCC Announcement about ROS > >Rein, why don’t you call Dawn (FCC agent 3820) and ask her why the FCC chose >to communicate through the ARRL; the phone number has been posted in previous >messages here, but I’ll dig it back up if needed. > > > > 73, > > > > Dave, AA6YQ > > > >From: digitalradio@yahoogroups.com [mailto:digitalra...@yahoogroups.com] On >Behalf Of rein...@ix.netcom.com >Sent: Friday, March 05, 2010 12:18 PM >To: digitalradio@yahoogroups.com >Subject: Re: [digitalradio] Re: ARRL/FCC Announcement about ROS > > > > > >Hi Trevor. > >In my opinion, your points are very well taken. > >It appears to me strange, at best, that an US federal branch is >using an hobby club with a membership ratio of some 50 % of >the total US population to communicate via thatclub matters >of law. > >Even with the 50 % membership, the percentage of members >following the day in and out operations is much lower. > >I can imagine perhaps one reason that this has not happened, >a lack of resources at the Federal Communication Commission >though that seems to be unlikely. > >The FCC has very effective ways to communicate with us, if >need be, > >I am a member of the ARRL and have been that for 40 years. > >73 Rein W6SZ > > >-----Original Message----- >>From: "Trevor ." <m5...@yahoo.co.uk <mailto:m5aka%40yahoo.co.uk> > >>Sent: Mar 5, 2010 5:13 AM >>To: digitalradio@yahoogroups.com <mailto:digitalradio%40yahoogroups.com> >>Subject: Re: [digitalradio] Re: ARRL/FCC Announcement about ROS >> >>All the ARRL announcement really does is reference the FCC statement of Feb. >>23. >> >>That statement said the FCC was not going to say if it considered ROS to be >>spread spectrum. Individual operators were the ones responsible for making a >>decision. >> >>The FCC has never said ROS is "illegal" nor have the ARRL. >> >>I've had a trawl through the FCC site but couldn't find a definition there of >>what they mean by the words "Spread Spectrum" and it's their definition that >>matters not other peoples. >> >>If the FCC were concerned about the use of ROS on HF you would have thought >>they would have written to at least one of the US stations that they had >>observed using it and informed them of a breach of regulations. I am not >>aware that they have done so. >> >>73 Trevor M5AKA >> >> >> >> >> >> >>------------------------------------ >> >>Try Hamspots, PSKreporter, and K3UK Sked Page >>http://www.obriensweb.com/skedpskr4.html >>Suggesting calling frequencies: Modes <500Hz 3583,7073,14073,18103, >>21073,24923, 28123 . Wider modes e.g. Olivia 32/1000, ROS16, ALE: 14109.7088. >>Yahoo! Groups Links >> >> >> > > >
