It also goes the other way, was at a local showcase and they had a grad assistant (I think) running the pocket radar. I was watching the game before my son's game and he was taking readings from half way between home and the first place dugout. The pitcher was pitching consistent 84-85 (by my eye) I asked him what the speed of that pitcher was and he said 79-80. I said, I am not sure but I think with pocket radar you need to be in a straight line with the pitch. He said, let me try that out, went behind home plate and he lifted his fingers to show the kid just pitched 86 and gave me a thumbs up and stayed behind the plate the rest of the day.