Sold my old planter last year, and bought a newer one.  The newer one came with a Viper 4 monitor.  I don’t need the Viper 4 for planting, as I’ve already got a planter monitor.  However, I do need a sprayer monitor.  What is a good receiver to use with the Viper 4?  Spraying with a Fast 9613 80’ pulled by a Deutz 9150 (no isobus obviously).  Reason for wanting to go to a monitor is being able to map covered ground.  My FIL will be spraying for me, and I think would be easier for him to see what he’s covered on the map than trying to count rows.