With my problem, I loose complete use of the remote.

Also, I tried a Rio-Car unit and didn't suffer the problem.

So, in my instance the only thing I could think of is a Mark 2 specific issue (Not 2A), or a problem with my specific player. Like the serial issue...

To also recap, my player does reduce the range of my Logitech cordless trackball. I put the reciever on top, and range drops from over 10 feet to less then 3 inches. Someone else said that the wireless mice usually use the same frequency range as keyless remote systems.

The main reason I want to get this resolved is because I want to do things like wireless syncing, but not being able to unlock the car in the morning and setting off the alarm is not my idea of fun.