Audio Level Adjustment; Highway Mode; City/City 1/City 2 Modes - Whistler GT-138Xi User Manual

Highway Mode

The icon "P" indicates Highway Mode. It provides full audio
warnings any time radar (X, K or Ka) or laser signals are detected,
and is recommended for open road driving.

Audio Level Adjustment

The audio levels can be adjusted high to low or low to high.
• Move Power/Volume control back to
increase audio level.
• Move Power/Volume control forward to decrease audio level.

City/City 1/City 2 Modes

Whistler's City Modes are 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.
• Press City to cancel Highway Mode and engage City Mode.
The display will switch from"P" to "C".
• Press City again to enter City 1 Mode.
• Press City again to enter City 2 Mode.
NOTE: After 3 seconds, "I" or "II" City Mode indicator turns off.
• Press City a fourth time to cancel City 2 Mode and returns the
unit to Highway Mode.
OPERATION
12