The S2 has its fair share of false detections, however they are always for bands that are not used by police here in St. Louis. As I said above, all the cops here use Ka band. But it seems like driving by a hospital will always trigger X band, similarly most stores that have automatic door openers will trigger X or K to go off. Also, when ever I drive by the airport the LASER detector goes nuts. I assume they use some sort of LASER ranger finder. However, 100% of the time when the Ka band alert goes off there is a cop around. Most detectors now have the VG2 detection. A false alarm will be triggered for VG2 if you come across another motorist who is using a cheap radar detector.
It is possible to program the S2 to ignore certain bands, however I haven’t gotten around to this, and I probably wont change it just because you never really know what you are going to run up against.
RADAR detectors, like actual RADARs, are most useful when you learn to understand what they are trying to tell you. After using one for a few weeks you will quickly learn what you can ignore and when to slow down.
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