Beltronics Express 935 Owner's Manual - Page 17
Instant-On/Pulsed Radar, Typical False Alert Radar
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4. Moving Radar behind you, traveling in the same direction. Police Radar signals transmitted from behind your vehicle can be received when reflected by objects in front of you such as large signs, bridges and trucks. As you drive, the size and configuration of these objects are constantly changing causing the strength of any reflected Radar signal received to vary. A strong, uninterrupted alert indicates the patrol car is close behind. Instant-On/Pulsed Radar This type of signal appears suddenly when a Radar unit is "triggered". The instant-on alert consists of an intense, three second audio "burst", coupled with the type of Radar band detected and flashing of the signal strength bar graph in the display. Typical False Alert (Radar) Ideally, a Radar detector should only alert in the presence of police Radar. However, because other devices share X band with police Radar, false alerts sometimes occur. Generally, a false signal produces only a short audio and visual alert. Since they are most often weak, it is possible to drive out of the signal's range very quickly and receive only a brief alert. Although many times the probable source of the false signal can be identified (supermarket, bank, commercial building, etc.), caution is advised until the source can be confirmed. The X band alert pattern caused by a non-police source can look like the initial alert produced by actual police Radar. For this reason appropriate action is required any time an alert is received. 16