I've read way too many conflicting reports, many of which are "responses from Escort CS", about what exactly the Auto mode does.
I understand that the City mode, depending on programming, will lower X, really lower X, or turn off X.
However, I've heard SEVERAL stories about Auto mode, including:
(1) Raising X band alert threshold up to like 4 bars minimum if the area is densely packed with X band signals
(2) Doing the same for X and weak K
(3) Looking for pairs of X and/or K band signals
(4) Scans X, K, 33.8, 34.7, 35.5 first before scanning the full spectrum, prioritizing alerts that match police frequencies spot on (??? this would be really neat if true!)
So, what EXACTLY does this Auto mode do? Intuitively, it seems to make the unit very resistant to alerting to X-band door openers while K band seems to perform identically, though i don't have many data points to go off.