I reprogrammed my RD to eliminate X detection and also make some adjustments based on the recommendations I've read here, using the Old Goat's programming cheat sheet. He was kind enough to make some suggestions along the way however, now, after the RD cycles on, where the "A" used to appear in the bogey counter, now appears a "U".
Before I did the programming, I could change from A, to BigL, LittleL by simply depressing the control knob for a few seconds and it would switch to the various modes.
Now, when I do that, I only get Big U and Little U.
I've looked in the manual and can't find anything about U in the display.
What did I do? What's it mean?
I did notice it was awful quiet on the highway tonight. ... had me worried.