3B8FO ,using his NVIS inverted L antenna, had some successful ROS qsos with Herve VK6YM on 14.103 today when both fsq and winlink vara failed.Power used on both sides was 50W.
Wednesday, 20 June 2018
Winlink standard radiogram
Herve VK6YM successfully received standard emcom IARU and ARRL forms from 3B8FO by winlink Winmor.
ROS datamode
Is having successful qso with Herve VK6YM using ROS data mode.
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
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
Emcom meeting with 3B8BAN
3B8FO had a meeting with Francois 3b8ban on sunday 17/06 in his shack at R-Hill.He was shown the antenna farm of 3B8FO and they discussed about the various NVIS antenna configuration possibilities and SWR issues.
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