It does, just not in a way we would like where channels not in the database are detected.
so it does not
It does a scan that removes the stations that are in the database for the market that you don't get (or it thinks you don't get) on your behalf so you can't even enable those stations manually. Which is annoying for areas where a signal can be hit or miss at various points during the year because of co-channel interference from a neighboring market or if you need to use a rotator to get some channels.
The scan also matches different RF numbers for repeaters. (i.e. it picks up WCBS's Long Island repeater on channel 22 since it also uses 2-1 despite the only data in the guide being for the main NYC signal on channel 33) It can also match RF + minor number if you want to use the trick to get the guide data from another market who has the same network.
Edited by KyL416, 11 April 2014 - 07:24 PM.