Posted 4/23/2009 07:34 (#690418 - in reply to #690278) Subject: Re: How true is the pop on a KPM ll
At 5 mph, .1 is a 2% deviation. I have a yield monitor for mapping in my planter tractor, but my planter monitor is hooked to the tractor's radar. I fiddled with the tractor's calibration number to get it and the yield monitor to match the gps speed. GPS whould be most accurate. Also, radar can be affected by tractor bounce and high wind blowing residue around.