New amateur radio digital mode - ROS

ROS is a brand-new Amateur Radio digital spread spectrum mode with the first HF contact taking place on Thursday February 18.

The first contact with ROS took place on February 18, 2010, at 20:56 UTC from Vitoria in Spain to the University of Twente in the Netherlands covering a distance of 1265 Km on 7.065 MHz.

The HF frequencies currently used for ROS are USB 3.600, 7.053, 14.101, 28.300 MHz

To use ROS you just need your HF radio, a PC and a basic PC sound card interface, see link below.

The software for ROS is free and you can download it along with the User Guide and Introduction to ROS Spread Spectrum at http://rosmodem.wordpress.com/

The University of Twente has a Software Defined Radio you can use via the Internet, see
http://websdr.ewi.utwente.nl:8901/

Soundcard Interfacing
http://www.southgatearc.org/news/september2007/
psk31_soundcard_interface.htm