Stinger DSI computer User Manual page 6

RADAR SPEED TRAPS: FIxED AND MoBILE uNITS
10
There are two types of radar speed traps: fixed and mobile. The SpotList Alerting described on page 9 can warn you about the fixed
radar locations. Stinger's Radar Alerting feature
*,
Your Stinger DSI can utilise the Spectrum Analyzer with patch antenna to recognize police radars at often double the distance that
some radar detectors manage to achieve.
Note: Some countries have taken away your freedom to use the radar alerting functionality. If you travel to a country where radar alerting is
permitted, you can download the appropriate Stinger Operating Software. To assist you with this, please use the Stinger Desktop application for
your Mac or PC (see page 16). On returning to the country where Radar Alerting is not permitted, you can erase this function again by pressing
the OFF button (in the top right corner) and then the ERASE button (the rightmost of the lower four function buttons). See Page 4 for the ERASE
function description.
Radar Alerting offers a choice of three different preferred screens (which you can indicate in Settings > Preferred Screen):
Spectrum Analysis screen
The signal strenght
The higher the peak displayed by the
Spectrum Analysis screen, the stronger
the signal. The stronger the signal, the
more likely it is to be an actual trap. Also,
the closer to the centre of the graph the
peak is, the more likely it is to be police
radar. In this example, it appears to be
an actual speed trap for two reasons:
peak height and signal location.
*Available where allowed
however, can expertly alert you to both types of radar traps: fixed and mobile.
Exact frequency
Your DSI indicates the
Pilot screen
Band type
Your DSI indicates the radar
band here (K or Ka).
Signal Strenght screen
The signal strenght
Your DSI detects a strong K-band
exact radar frequency
frequency, as the K indicator bar is
here – in this case,
almost full. This suggests an actual
24.126 GHz.
speed trap in the area, not a false
alarm. The Ka band is completely
empty, so there is no Ka trap in the
area. There is no Laser (La) signal
present either.
RADAR SPEED TRAPS: FIxED AND MoBILE uNITS
11
Signal strenght
The signal strength – Your DSI
displays a relatively high signal
strength value of 225 here,
whereas the maximum is 255.
Therefore it is very likely that this
concerns an actual speed trap.
The precise frequency
The closer the measured
frequency approaches the
official K band axis frequency of
24.125 GHz (or in the case of the
Ka band, 34.3 GHz), the more
likely it is to be a speed trap as
opposed to a false alarm.