This is false. Location control and ZIP works just fine with a favorites list. When you enter the ZIP, it will tell you that the full database is off, and ask if you wish to turn it on. Just select no, and the location will update the same as it would with a GPS. Sure it's not pinpoint accurate, but a few key presses at various points during a road trip will accomplish the same thing. Auto locate works also, but takes longer.
GPS is a wonderful feature, but isn't a requirement.
In post #3 above:
"zip code = the lat/long of the approx. center of the zip code entered".
I should have been clearer.
hasrat is correct:
Location control and ZIP works just fine with a favorites list
....
However, I've seen many a newb get frustrated because they got the "nothing to scan" error.
The radio
has to have accurate location data for a favorite list to operate while location control is on.
Either by a GPS module, manually entering the lat/long, or (yes) entering a (correct) zip code.
And, if location changes, one of the above 3 need to be updated.
Note: Auto locate is practically worthless.
All it does is look for the strongest control channels.
It actually does not "locate" diddly squat.
And, if out in the boonies, it is worthless...
SDS100/SDS200: - Auto locate