Raven produces a range of equipment for Precision Farming that links in with many of there existing controllers. This allows the owners of Raven equipment to move onto data collection and variable rate application with minimum complications. The Viper controls variable rate applications and logs the as applied data. The RGL600 Lightbar when connected to any of the range of antenna is the most economical and accurate way to navigate across a field. The ENVizio Plus guidance and logging system has a two or three dimensional graphic of the course to be driven and a built in Lightbar as an addition aid to guidance. The ENVizio is compatible with all the Raven receivers and can be upgraded to automatic steering.