19411 km with 30W to dipole

Amateur radio low power operators have been getting very good results with the digital data mode ROS.

Pete ZL2AUB in Palmerston North, New Zealand, worked EA3FHP over a distance of 19411 km using the ROS 8 baud mode while running just 30 watts to a dipole.

Graham G0NBD in Wallasey near Liverpool worked PY6HL on 20 meters using 25 watts to a 35 ft vertical.

19411 km!! 30W + dipole
http://rosmodem.wordpress.com/2010/07/23/new-record-19411-km-30w-dipole/

Liverpool-Brasil 25w Antenna vertical
http://rosmodem.wordpress.com/2010/07/23/liverpool-brasil-25w-antenna-vertical/

Download the latest version of ROS from
http://rosmodem.wordpress.com/

ROS and PSK Reporter
http://rosmodem.wordpress.com/2010/07/23/
ros-and-psk-reporter/

To use ROS you just need your radio, a PC and a sound card interface.

Information on sound card Interfacing can be found at
http://www.southgatearc.org/articles/g0ftd/
data_dummy_interface.htm
and
http://www.southgatearc.org/news/september2007/
psk31_soundcard_interface.htm