Whistler 1770 Owner's Manual page 8

OPERATION
Auto Quiet Mode
Auto Quiet reduces the selected audio level to level (1)
approximately 5 seconds after a radar or safety radar signal
is detected. The alert for any new signal within 20 seconds
will resume at level (1). Auto Quiet does not affect VG-2 or
laser alerts.
• P ress Quiet/Menu (before a signal is detected) to
engage Auto Quiet. Display reads:
• Once the Auto Quiet mode is engaged, you may cancel
the audio alarm by pressing Quiet.
• Press Quiet (when the unit is not alarming) to cancel
Auto Quiet mode.
• NOAA is not effected by Auto Quiet. Auto Quiet mode
is canceled if an NWR alert is received.
Quiet Mode
Quiet cancels audio during an alert and any new alert with-
in 20 seconds. After 20 seconds, approximately 2 beeps
are provided on any new alert and unit then remains quiet.
• Press Quiet to cancel the audio.
• Press Quiet a second time during an alert to restore the
standard audio alert pattern; or turn the unit off, then on.
12
OPERATION
City/City 1/City 2 Mode
W h i s t l e r's Three Stage City Mode is designed to reduce the
annoyance of automatic door openers, intrusion alarms and
other devices which share frequencies with police radar.
Generally X band is used for these devices.
• P ress City to engage City. Display re a d s :
• P ressing City a second time engages City 1. Display re a d s :
• P ressing City a third time engages City 2. Display re a d s :
• P ressing City a fourth time cancels City, City 1, and City 2.
Display re a d s :
In City Mode, weak speed/safety radar signals give an initial
a l a rm of two beeps, and then remains quiet unless the signal
becomes very strong. When the signal strength incre a s e s ,
two additional beeps are provided. In City 1 Mode, only the
X band sensitivity is lowered. In City 2 Mode, X-band is not
detected. CAUTION: When selecting this mode, some
towns/small cities may still be using X band radar.
If Auto Quiet is engaged in City 1 or City 2 modes and the
unit receives a strong radar signal, the unit perf o rms the Auto
Quiet feature. City Modes do not change the audio alert for
l a s e r, VG-2 or NOAA.
13