I was hit last week by an oncoming LEO equipped with a K-Band radar in a 80KPH zone. I started to slow when I saw him (down shifted) and once again when he lit me up with IO. I got down from 125KPH to the LEO's stated 113KPH, and the police officer was very polite and pleasant and dropped the ticket to 95KPH ($55 and no points rather than the $240 and 4 points the 113 would have given me).
My question is; how fast does the Radar become fully operational with an IO? When I detected him, was he getting a full read?