ROS is a data mode developed by José Alberto Nieto Ros EA5HVK.
ROS implements a combination of FHSS (Frequency Hopping Spread Spectrum), DSSS (Direct Sequence Spread Spectrum) and 2G (Second Generation) CDMA (Code Division Multiple Access), The modem deployed's a 144 MFSK phase continuous single tone, modulation scheme, ROS may be amplified by non-linear Tx path. Class c/d/e.
ROS provides efficient use of channel capacity and Data rate/power ratio and is exceptionally robust, being well suited to QRP Dx, low power chat and disturbed paths, ie, Polar and NVIS 5 MHz, where conventional data modes are unable to provide communication's.
Might use it together with FSQ for our emcom communicating channel.
Download and additional info available at
https://rosmodem.wordpress.com/
https://www.dropbox.com/s/jokk3dfe0vofcuc/Le%20ROS%2C%20qu%E2%80%99est%20ce%20que%20c%E2%80%99est%20%20by%20F1UCG.pdf
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