Uniden America Corporation LRD450 Manual Do Utilizador

•  X, K, and Ka band alarms

•  POP and Laser alert alarms

•  Highway/City/City 1 modes

•  Invisible to VG-2 and Spector I and IV radar detectors

•  Mute alarm audio

•  Memory feature saves user’s last settings (except MUTE) 

when the unit is powered down/disconnected from 

power.

•  LRD450 radar detector

•  Straight 12V DC Power Cord

•  Windshield Mounting Bracket

•  Hook and loop fastener tape

•  Spare fuse for DC Power Cord

1

Eagle Eye

360° Laser detection

2

Power Jack

Plugs into power source.

3

Eject

Releases LRD450 from 

mounting hardware.

4

Dims the display brightness.

5

Turns off the sound.

6

Sets the unit to CITY, CITY I, or 

HIGHWAY mode.

7

Power/

Volume Dial

Turns unit on and adjusts 

volume.

8

Mounting 

Bracket Slot

The mounting bracket fits into 

this slot.

When a signal is detected, the display will show the band 

type, City/Highway setting, and signal strength. If the 

LRD450 detects a laser, the display shows L.

Install the LRD450 on the front windshield or on the 

dashboard. For best performance, position the detector as 

low as possible in the center of the front windshield. Be 

sure the unit’s view of the road, either to the front or the 

back, is clear. 

1.  Clean the windshield and the rubber cups of the 

mounting bracket. Attach the rubber cups to the 

bracket.

2.  Push the bracket firmly onto the windshield.
3.  Slide the unit onto the bracket. 
4.  Gently adjust the bracket angle if needed.
Do not use the detector to adjust the bracket angle.
5.  Plug the power cord into the detector.
6.  Plug the cigarette lighter adapter into the vehicle’s 

cigarette lighter.

You can remove the detector by pressing the 

Eject button.

1.  Place the unit on the dashboard so that it has a clear, 

level view of the road.

The unit cannot be readjusted after final installation.
2.  Remove the backing from one side of the hook and loop 

fastener tape.

3.  Place that fastener tape on the dashboard where you 

want the unit.

4.  Attach the other piece of the fastener tape to the 

bottom of the unit and attach the unit to the dashboard 

fastener tape.

You can remove the unit as needed. 
5.  Plug the power cord into the detector.
6.  Plug the cigarette lighter adapter into the vehicle’s 

cigarette lighter.

Once the detector is installed and the car is turned on, turn 

the volume dial away from you until it clicks. The unit is 

now turned on.
The LCD cycles through the display in this order: X - K - Ka - 

Laser, then signal strength 1- 5 except for Laser (L). 
Once the cycle is complete, the detector turns to standby 

mode.

Highway

X

K

Ka

C

H

City

X

K

Ka

 

City 1

X

K

Ka

I

The LRD450 detects emissions from radar guns and sounds 

an audio alert for the driver. The detector determines 

which band range the signal is from and displays that 

frequency type on the display (X, K, Ka, or L). The frequency 

strength (1 thorough 5) also displays as applicable. If there 

is a specific alert code, that is also displayed.
False signals can come from other devices such as the 

The LRD450 recognizes:

•  X Band:  This band was the first frequency band assigned 

to police radar. It operated on a lower frequency 

(10.525GHz) with a higher power output.

•  K Band: This band is the most common frequency used 

in radar detectors (24.150). Its relatively small 

wavelength gives it a clocking distance of about 1/4  mile 

although, depending on the environment, it can detect 

up to 2 miles. Turn on the K band filter (press and hold 

CITY) to filter out weaker K band frequencies and reduce 

false readings.

•  Ka Band: Over the years, the Ka band incorporated the 

Ka-Band, the Ka Wide-Band, and the Ka Super Wide-

Band. Most photo radars (also known as stop light 

cameras) use this band.

•  Laser: Police use the laser’s narrower light pulses for 

speed detection as it is more accurate and faster. Laser 

beams are more detectable after they have bounced off 

their target and begin to disperse on the return trip.

The LRD450 operates in three modes:

•  Highway. Provides audio and visual alerts any time all 

bands and laser are detected. Recommended for 

highway or rural driving. (X, K, Ka Laser)

•  City. Provides audio and visual alerts any time all bands 

and laser are detected. Provides a stronger signal for the 

X band so it can pick up weaker signals. (X, K, Ka, Laser)

•  City I. Similar to City mode, but no X band is detected. 

(K, Ka, Laser)

K

Ka

C

1

K

Ka

1

X

Ka

C

1

X

Ka

1

X

C

1

X

1

X

Ka

C

L

X

Ka

L

After installing your radar detector, you can set it to your 

own specifications.

•  Mute/Auto Mute. When an audio alert sounds, pressing 

MUTE lets you turn off the audio alarm. Press and hold 

MUTE to set Auto Mute to ON to reduce the audio 

alarm by 50% automatically after 3 seconds during an 

alert.

•  Dim. Change the brightness of the display. (Default - 

Bright)

•  Set City, City I, or Highway 

X K Ka C    

1

Signal Strength (1 - 5)

City 1 ( I )

Highway (H)

Various Alerts

City (C)

Band Type