In fact, ROS is a Multi FSK, like many other modes.
________________________________ De: Siegfried Jackstien <[email protected]> Para: [email protected] Enviado: vie,26 febrero, 2010 01:29 Asunto: AW: [digitalradio] The FCC's definition of Spread Spectrum Bw lower as 3kc and fsk … like many other modes That is what i think So legal where 3kc wide/digital is legal so out of cw portion but in the digiarea Dg9bfc Sigi At a given time if you make a snapshot there is only one tone so bw at a given short time in lower as 500hz So it is narrow in a short period of time ;-) should be legal anywhere My thoughts is all modes should be legal in any band cause hamradio is experimental! ________________________________ Von:digitalradio@ yahoogroups. com [mailto: digitalradio@ yahoogroups. com ] Im Auftrag von max d Gesendet: Donnerstag, 25. Februar 2010 20:53 An: digitalradio@ yahoogroups. com Betreff: [digitalradio] The FCC's definition of Spread Spectrum Part 97.3 "Definitions" defines: "SS. Spread-spectrum emissions using bandwidth-expansion modulation emissions having designators with A, C, D, F, G, H, J or R as the first symbol; X as the second symbol; X as the third symbol. " Title 47 Sec. 2.201 is the relevant section formally defining these symbols. It can be found on the ARRL website. For a signal to be officially considered Spread Spectrum by the FCC, it would have to meet a very specific description, or maybe I should say it should not meet the other specific definitions of emissions. After my reading of 2.201, I don't think that ROS or Chip64 could be "officially" defined as Spread Spectrum. And, the response from the FCC doesn't provide any FCC position or interpretation of ROS, and further says "The Commission does not determine if a particular mode "truly" represents spread spectrum as it is defined in the rules." Just my thoughts, Max NN5L
