To begin with I searched and tried to find the answer, I came up with 500 pages and looked a at few and gave up.
My RD is a 8500 X-50 blue. I bought it in mid 2004. Is it still just as good as new as long as I get no service required messages?
Do RD's wear out?
Or get weaker with time?
I want a new one. Do I need a new one?
Mine had the service required display when it was less than a year old. Escort replaced antenna, recalibrated and updated software. RV10. All under warranty back in March of 2005. So that was like 5 years ago.
Serial number 03000140 1304