Whistler CR73 Series User Manual page 10

OPERATION
City/City 1/City 2 Mode(cont'd)
• Press City button again to enter City 2 Mode.
• Press City button a fourth time to cancel City 2
Mode and returns the unit to Highway Mode.
In City Mode, weak speed/safety warning system
signals give an initial alarm of two beeps, and then
remains quiet unless the signal becomes very strong.
When the signal strength increases, two additional
beeps are provided. City 1 and City 2 Modes
operate the same as Highway Mode, but in City 1
Mode, only the X band sensitivity is lowered. In City
2 Mode, X-band is not detected.
CAUTION: Some towns/small cities may still be
using X band radar. City Modes do not change the
audio alert for laser.
Highway Mode
Highway mode provides full audio warnings any
time radar (X, K, Ka, Safety Warning System) or laser
signals are detected, and is recommended for open
road driving.
Field Disturbance Sensor Rejection (FDSR)
Traffic Flow Sensor Rejection (TFSR)
Recently many new products that operate on police
radar frequencies have been causing nuisance alerts
to radar detectors. These radar based sensors are
installed alongside the Highway and more recently
on vehicles used as lane change assist / blind spot
detectors / collision avoidance systems. TFSR when
turned ON is designed to eliminate alerts from
specific Traffic Flow sensors. FDSR when turned ON
is designed to identify all radar based collision
avoidance systems that operate within the same
band as police radar and provide a brief less
intrusive alert to keep you informed and aware.
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