Beltronics BEL 980 Owner's Manual - Page 20

"Mo v i n g " confirms Emergency/Slow Moving Vehicles in transit (messages 61-64) "Me s s a g e Un k n o w n " confirms incomplete or unknown messages Note-for a complete listing of the five Safety Warning System® categories and corresponding messages, please refer to the Safety Warning System® Alert Card enclosed with your manual. performance verification Conditions that Affect Radar Alerts If you feel your unit is not alerting properly, keep in mind that there are many conditions that influence the intensity or duration of an alert: 1. The police are using instant-on/pulsed Radar, in which case no signal is transmitted until visual contact has been made with your vehicle. For detection of this signal, you must rely on reflected signals from Radar directed at traffic traveling ahead of you. 2. The police Radar unit is positioned perpendicular to the road, around a curve, or just over the crest of a hill thus significantly reducing the reception range. 3. The highway traffic between your vehicle and the police Radar source is heavy. This blocks/reflects transmitted signals. The presence of several large trucks between you and the police Radar unit could also significantly reduce reception. 4. Rain or humid weather conditions can absorb transmitted signals before they reach your vehicle, again reducing detection range. 5. The police Radar unit is not properly tuned and is transmitting outside the fcc allocated X, K or Super Wideband Ka frequency ranges. 