In this chart, the low cost satellite tracking technique is compared to the published and guestimated accuracies of the NAVSPASUR system. For the low cost system, the position is determined to within 500m in a direction normal to the fence mainly due to the accurately measured time of crossing and accurately known fence location. Position in the plane of the fence is not well known (+/-12 Km). The velocity uncertainty of 1% after the first acquisition amounts to about +/-1 minute of time error in predicting the next pass 90 minutes later. Even with a frequency uncertainty of a few hundred Hz, this is usually adequate to identify the satellite on that next pass. After observing a satellite for several days and refining the orbital element set, the velocity and positon accuracies improve significantly. Acquisition and tracking of satellites without use of any outside information has been demonstrated, and the capability is within reach of amateurs.