Uniden LRD 737 User Manual

LRD 737

®

Operating Guide

Precautions

Important: The LRD 737 was not designed to help you disobey

Federal and Local Regulations
The FCC passed the Communications Act in 1934 to give all citizens the

right to receive any type of radio transmission. The same radio
frequencies used by police radar are also used by other devices, such as
automatic door openers, burglar alarms, and some amateur radio
equipment. Since the LRD 737 is just a radio receiver tuned to a specific
portion of the public radio spectrum, it is protected under this act.

Some local, state, and federal regulations may prohibit the use of this
detection device. Please check with authorities regarding the use of this
device before operating it.

the law. Safe drivers always obey the posted speed
limit and legal driving methods at all times.

Contents

Introduction...............................................1

Feature Highlights ......................................1

Speed Detection Systems ....................................2

Radar ................................................2

Laser ................................................3

Included with Your Radar Detector ............................4

Controls and Functions......................................5

Installation ...............................................8

Helpful Tips...........................................8

Adjusting the Windshield Mounting Clip ....................9

Mounting to the Windshield .............................10

Connecting the Power ..................................11

Replacing the Fuse.....................................12

Operation ...............................................13

Power On............................................13

Volume Control.......................................13

Memory Retention Feature ..............................14

Full Warning .........................................14

Audio Alert Only Operation .............................14

Visual Alert Only Operation .............................15

Auto Mute Operation...................................15

City Operation ........................................16

LED Signal Strength Meter in City Mode...................17

Safety Warning System Operation ........................17

Care and Maintenance .....................................18

Troubleshooting ..........................................19

Specifications ............................................20

Optional Accessories & Replacement Parts .....................21

Features, Specifications, and availability of Optional Accessories are all
subject to change without notice.

Uniden®is a registered trademark of Uniden America Corporation.

One Year Limited Warranty

Important: Evidence of original purchase is required for

warranty service.

WARRANTOR: UNIDEN AMERICA CORPORATION (“Uniden”)
ELEMENTS OF WARRANTY: Uniden warrants, for one year, to the original retail

owner, this Uniden Product to be free from defects in materials and craftsmanship with
only the limitations or exclusions set out below.
WARRANTY DURATION: This warranty to the original user shall terminate and be
of no further effect 12 months after the date of original retail sale. The warranty is
invalid if the Product is (A) damaged or not maintained as reasonable or necessary, (B)
modified, altered, or used as part of any conversion kits, subassemblies, or any con­figurations not sold by Uniden, (C) improperly installed, (D) serviced or repaired by
someone other than an authorized Uniden service center for a defect or malfunction
covered by this warranty, (E) used in any conjunction with equipment or parts or as
part of any system not manufactured by Uniden, or (F) installed or programmed by
anyone other than as detailed by the Operating Guide for this product.
STATEMENT OF REMEDY: In the event that the product does not conform to this
warranty at any time while this warranty is in effect, warrantor will repair the defect
and return it to you without charge for parts, service, or any other cost (except ship­ping and handling) incurred by warrantor or its representatives in connection with the
performance of this warranty. THE LIMITED WARRANTY SET FORTH ABOVE IS
THE SOLE AND ENTIRE WARRANTY PERTAINING TO THE PRODUCT AND
IS IN LIEU OF AND EXCLUDES ALL OTHER WARRANTIES OF ANY NA­TURE WHATSOEVER, WHETHER EXPRESS, IMPLIED OR ARISING BY
OPERATION OF LAW, INCLUDING, BUT NOT LIMITED TO ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. THIS WARRANTY DOES NOT COVER OR PROVIDE FOR THE RE­IMBURSEMENT OR PAYMENT OF INCIDENTAL OR CONSEQUENTIAL
DAMAGES. Some states do not allow this exclusion or limitation of incidental or con­sequential damages so the above limitation or exclusion may not apply to you.
LEGAL REMEDIES: This warranty gives you specific legal rights, and you may
also have other rights which vary from state to state. This warranty is void outside the
United States of America.
PROCEDURE FOR OBTAINING PERFORMANCE OF WARRANTY: If, after
following the instructions in this Operating Guide you are certain that the Product is
defective, pack the Product carefully (preferably in its original packaging). Include
evidence of original purchase and a note describing the defect that has caused you to
return it. The Product should be shipped freight prepaid by traceable means, or deliv­ered, to warrantor at:

Uniden America Corporation
Customer Service
4700 Amon Carter Blvd.
Fort Worth, TX 76155

[phone], 7:00 a.m. to 7:00 p.m. Central Time, Monday through Friday

Covered under one or more of the following U.S. patents:

®

4,622,553 4,698,632 4,709,407 4,791,420
4,831,498 5,315,302 5,469,287 5,579,012

5,835,052

©1999 Uniden America Corporation. All rights reserved.

Printed in the Philippines

USZZ01074ZZ

Introduction

Welcome to the world of sophisticated, early warning laser/radar detection.
You have purchased one of the most advanced laser/radar detectors
available. The LRD 737 is a completely integrated laser/radar detector.
It responds to the X-, K-, and Ka-SuperWideband radar guns in use today
and also provides front/rear laser detection of the latest speed monitoring
system — the laser gun. The built-in Safety Warning System (SWS™) is
capable of detecting a hazardous warning signal transmitted on the K-band.

The LRD 737 provides distinct visual and audio alerts to warn you of the
presence of X-, K-, and Ka-SuperWideband radar signals as well as IR
laser signals. You can drive with confidence when you bring along
the LRD 737.

The LRD 737 employs V.C.O. (Voltage Controlled Oscillator) and
E.D.I.T. (Electronic Data Interference Terminator) circuitry, giving more
reliable performance.

The E.D.I.T. circuitry filters out unwanted microwave signals and
prevents certain falsing.

We are certain that you will enjoy the LRD 737, and to ensure that you
get the most from its features, please read this Operating Guide carefully
before installing and operating the unit.

Feature Highlights

• Front/Rear Laser Detection • Memory Retention Feature

• Complete 6-Band Coverage • Safety Warning System™

• Super Wideband • 6 Alarm Tones

• K/Ka Priority • Pulse Detection

• Signal Strength Meter • Warning Lights

• Visual/Audio Only Mode • Auto Mute Mode

• City and Highway Modes • Self Test

1

Speed Detection Systems

A speed detection device (often called a radar gun) sends out either a
microwave signal or beam of light. When this signal reaches its target,
part of the signal is reflected or bounced back toward the emitting gun.
The time required for the signal to leave the gun, bounce off an object,
and return is used to determine a vehicle’s distance and speed.

Radar

Radar (Radio Detection and Ranging) is a microwave system for
detecting the speed of moving objects by reflected pulses of high
frequency radio waves. There are 3 radar bands (microwave frequencies):
Xband (10.49 to 10.56GHz), Kband (24.04 to 24.26GHz), and the
“superwide” Ka band (33.4 GHz to 36 GHz).

The X band was the first used for traffic, followed by the K band which is
harder to detect (most instant-on radar is K band). The Ka band was
introduced in 1987, and widened to Ka SuperWideband in 1990 by the
FCC. The LRD 737 monitors all current radar bands including the entire
Ka SuperWideband.

The radar beam is cone shaped — the narrower the beam, the greater the
resolution. A moving vehicle reflects radar signals back towards the radar
gun. The LRD 737 can detect the signals emitted by radar guns, and it
will sound an audio alarm and flash a warning indicator.

For continuously transmitting radar, use the LRD 737 to get accurate
detection from a safe distance. Weak signals cause the audio and visual
alarms to sound intermittently, but as the signal gets stronger (the closer
you get to the radar gun), both alarms increase in intensity.

Instant-on transmitters fire a short radar pulse beam at a vehicle and
instantly read its speed. When detected at a distance, you will hear a few
beeps and see the strength meter begin to light. Instant-On radar signals
are the most difficult to detect at a safe distance because they are
transmitted only when directed at you or at a vehicle directly ahead
of you.

2

Laser

The Laser Speed Detection System, also called LIDAR (for Light
D

etection and Ranging), uses a laser gun that emits infrared light pulses
just outside the spectrum of visible light. Each reflected pulse measures
the speed of the object coming toward or going away from the laser gun.

There are two Laser signals: Laser and Laser 2.
Unlike radar, the laser gun emits a very narrow beam of light, so it can

pinpoint a speeding car within traffic. The infrared beam spreads out, but
slowly and over a longer distance than a radar signal.

The laser gun can acquire a speed reading as quickly as 0.3 seconds,
sometimes less. However, since it isn’t easy to accurately aim at and hit a
moving target, an operator often moves the laser gun in several directions
to get a reading. So laser signals are emitted continuously for a few
seconds for each speed measurement. The LRD 737 can detect these light
pulses from as far away as 1.5 miles, which is about four times the
effective range of a laser gun (2,000 feet), and about ten times its average
operating range (500-800 feet).

Note: To be safe, do not ignore any warnings. Although there are other

types of radar signals that may cause interference, when the
LRD 737 detects a signal, be on the alert. It is important to
exercise caution at all times.

3