I'm hoping the folks over at Navalert (or anyone in the know) can answer a question for me. Over the last few days I've noticed Ka hits on my 8500 while on certain sections of i-75 North and South in the southeast section of Michigan. Specifically between Detroit, Hazel Park, Highland Park, and Troy. Approximately between Davison Fwy (m-8) and i-696 (all on i-75). Its happened every day, for the last few days, and at the same spots, at various times of day. There was no police presence (from what I can discern), and ramp up in the signal is sudden and extremely fast. Are there new speed cameras being launched in Michigan (this will be first I've heard of them, down here in Southeast Michigan)? If what I'm seeing are the first signs of them, then I'll have a Navalert overnighted to me.
I'm also curious to know what SiRF GPS chipset the Navalert uses? Non StarIII GPS receivers have an extremely hard time grabbing a signal in my car due to some manufucture added coating on the front windshield.