Page 1
Professional
S
eries
Owner’s Manual
5442 West Chester Road
West Chester, Ohio
45069 USA
BEL
ProRemote
Plus
Made and printed in Canada
121R75P-0
MODEL RX75 PLUS
TM
TM
Professional
S
eries
Page 2
Quick Reference Card
1
I
Programming Details
Factory Default Settings
To reset RX75 PLUS to its original factory
settings, press and hold the “CITY” and
“VOL/MUTE” buttons while turning the
power on. The RX75 PLUS’s display will
provide a “Reset” message, accompanied
by an audible alert, acknowledging the
reset.
Bel Pro Remote Quick Reference Card
Remove card along perforations
Remove card along perforations
Congratulations and Important Warning
Congratulations
Your new Bel Pro Remote is the most
advanced custom-installed radar/laser
detector available.
The Bel Pro Remote includes longrange X, K, and SuperWide Ka radar
capability, improved Digital Signal
Processing for superior range and reduced
false alarms, our patented Mute and
AutoMute, audible and visual band alerts,
and all the performance you’d expect from
Beltronics.
In addition, your new Bel Pro Remote
introduces a new level of Radar/Laser
defense including:
• Blistering radar performance, for superior
K, and Ka-band sensitivity
• New programmable laser blockers for
maximum against laser guns
• Advanced Programming lets you instantly
set up to 8 customized features
• Exclusive AutoScan
™
mode drastically
reduces false alarms, plus Highway and
City settings
• Ultra-bright alphanumeric display uses
280 LEDs for crystal clear information
• Exclusive Threat Display
™
tracks and
displays multiple radar signals and signal
strength
• Exclusive Tech Mode
™
display provides
numeric frequency for any radar signals
• Standard remote Mute button provides
one-touch Mute, and volume adjustment
If you’ve used a radar detector before, a
review of the Quick Reference Guide on
page 4, and the Programming information
on pages 10 and 11 will briefly explain the
new features.
If this is your first detector, please read
the manual in detail to get the most out of
your new RX75 PLUS’s performance and
features.
Please drive safely.
IMPORTANT INSTALLATION WARNING
Your new RX75 PLUS must be installed by a
professional. Car Audio specialists and many
car dealers can install the RX75 PLUS for
you.
Attempting to install the Bel Pro
Remote without expertise in automotive
electronic installations can cause personal
injury during the installation, or can damage
your RX75 PLUS or your vehicle. If your
vehicle is damaged during installation, its
safety systems may be compromised, which
could cause personal injury or property
damage.
FCC Note:
Modifications not expressly approved by
the manufacturer could void the user’s FCC
granted authority to operate the equipment.
An example of Programming
Here is how you would turn RX75 PLUS’s
AutoMute feature off.
1 Enter the Program Mode by holding
both the CITY and VOL/MUTE buttons
down for 2 seconds. The RX75 PLUS will
beep twice and display Program.
2 Press and hold the REV button.
The RX75 PLUS will scroll through the
categories, starting with Power-on
indication (Pilot), then Power-on
sequence (PwrOn), then Signal strength
meter (Meter), and then AutoMute
(aMute).
3 Release the REV button when the RX75
PLUS shows the AutoMute item. Since the
factory setting is for AutoMute to be on,
the RX75 PLUS will display aMute ON.
(If you accidentally don’t release the
REV button in time, and the RX75 PLUS
goes to the next category, hold the REV
button down again, and after the RX75
PLUS scrolls through all categories, it will
begin again at the top of the list.)
4 Press the CHG button to change from
aMute ON to aMute OFF.
5 To complete the Programming, simply
wait 8 seconds without pressing any button.
The RX75 PLUS will display Complete,
beep 4 times, and return to normal
operation.
There are 8 user-selectable options so you
can customize your RX75 PLUS for your
own preferences.
The buttons labeled CITY and
VOL/MUTE are also used to enter the
Program Mode, REVIEW your current
program settings, and to CHANGE any
settings as desired. The words PGM, REV
and CHG are located on the front of the
display.
How to use Programming
1 To enter Program Mode, press and
hold both buttons down for 2 seconds.
(The unit will beep twice, and will display
the word “Program”).
2 Then press the REV button to REVIEW
the current settings. (You can either tap
the button to change from item to item, or
hold the button to scroll through the
items).
3 Press the CHG button to change any
setting. (You can either tap the button to
change from setting to setting, or hold the
button to scroll through all the options).
4 To leave Program Mode, simply wait
8 seconds without pressing any button.
(The unit will display Complete, beep 4
times, and return to normal operation).
Page 3
Table of Contents
Introduction I
• Congratulations I
• Important Warning I
• Quick Reference Guide 4
Controls and Features 5-8
• Power 5
• Power-On Indication 5
• AutoMute 5
• Volume/Mute 5
• Remote Mute Button 5
• Highway / AutoScan / City Switch 6
• Display Brightness 6
• Audible Alerts 6
• Signal Strength Meter 7
• Threat Display
™
7
• TechDisplay
™
8
• Laser Blockers
™
8
Programming 9-13
• How to use Programming 9
• Example of Programming 9
• Overview of Programming 10
• Details of Programming 11-13
Technical Details 14-19
• Interpreting Alerts 14-15
• How Radar Works 16
• How Laser Works 17
• How Safety Radar Works 18-19
Service 20-25
• Troubleshooting 20-21
• Service 22
• Warranty 22
• Specifications 25
32
Quick Reference Card
Bel Pro Remote Quick Reference Card
* Factory Default Settings
** Available only with External Speaker
Remove card along perforations
Remove card along perforations
Press the REV button
to go from one category
to the next
PILOT LIGHT
POWER-ON SEQUENCE
SIGNAL STRENGTH METER
AUTOMUTE
VOICE**
CITY MODE SENSITIVITY
BRIGHTNESS
BANDS
Pilot HWY
Pilot H
Pilot V
PwrOn STD
PwrOn FST
Meter STD
Meter THT
Meter TEC
aMute ON
aMute OFF
Voice On
Voice Off
City STD
City LoX
City NoX
Brt AUTO
Brt MIN
Brt MED
Brt MAX
Brt DARK
Bands ALL
Bands MOD
XONor OFF
KONor OFF
Ka ON or OFF
LSR ON or OFF or BLCK
SWS ON or OFF
Press the CHANGE button
to change your setting
within a category
* Full word: Highway or Auto or City
Letter: H or A or C
Vehicle voltage
* Standard power-on sequence
Fast power-on sequence
* Standard signal strength meter
Threat Display
™
TechDisplay
™
* AMute On
AMute Off
* Voice on
Voice off
* Standard City mode sensitivity
Low X band sensitivity in City Mode
No X band sensitivity in City Mode
* Brightness adjusts automatically
Minimum brightness when turned on
Medium brightness when turned on
Maximum brightness when turned on
Dark Mode when RX75 PLUS turned on
* All bands enabled
One or more bands has been modified
Turn bands “ON” or “OFF” by
pressing the VOL/MUTE button
Page 4
Power
Press the Power button to turn the RX75
PLUS on. (We recommend wiring the RX75
PLUS to a switched circuit so that it will
turn on/off with your vehicles ignition).
Matrix Display
The RX75 PLUS’s display will show
“Highway,” “AutoScan,” or “City” as its
standard power-on indication. Page 5. If
you prefer, you can choose other power-on
indications. Page 11.
During an alert, the display will indicate
the radar band, and a precise bar graph for
the signal strength. Page 7.
You can program the RX75 PLUS for
Threat Display
™
, which displays multiple
radar signals and relative signal strength for
each, or choose TechDisplay
™
mode, which
provides the actual numeric radar
frequency. Pages 7-8.
The display can also show Safety Radar
text messages. Pages 18-19.
City Button
Switches sensitivity modes between
Highway, AutoScan
™
, and City settings.
In general, we recommend the AutoScan
™
mode. Page 6.
Programming
The RX75 PLUS is ready to go – just turn it
on. But you can easily change 8 features for
your preferences. Press both buttons to
enter the Program Mode, then easily Review
or Change your settings. Pages 9-13.
VOL/MUTE Button
Briefly press this button on the display
controller, or the standard Remote Mute
button, to silence the audio for a specific
alert. (The audio will alert you to the next
encounter.) Page 5.
AutoMute
The RX75 PLUS’s patented AutoMute
feature automatically reduces the volume
level of the audio alert. Page 5. If you
prefer, you can turn AutoMute off. Page 9.
Quick Reference Guide
4 5
Power On
To turn the RX75 PLUS on, simply press the
Power button on the RX75 PLUS’s Display/
Controller. When you turn the RX75 PLUS
on, it goes through a sequence of alerts.
If you prefer, you may program your
RX75 PLUS for a shorter power-on sequence.
See the Programming section for details.
Power-on indication
After RX75 PLUS’s start-up sequence is
complete, the matrix display will show
“Highway,” “AutoScan,” or “City” to show
which sensitivity mode is selected.
If you prefer, you can select alternate
power-on displays. See the Programming
section for details.
AutoMute
Your RX75 PLUS has our patented
AutoMute feature. After the RX75 PLUS
alerts you to a radar encounter at your
selected volume level, it automatically
reduces the volume to a lower level. This
keeps you informed without the
annoyance of a continuous full-volume alert.
If you prefer, you can turn the
AutoMute feature off. See the Programming
section for details.
Volume/Mute
The VOL/MUTE Button, located on RX75
PLUS’s front panel, or the installed Remote
Mute button, allows you to adjust the audio
level.
To change the volume level, simply
press either button and hold. An audible
tone will be generated, and the display will
provide a bar graph for the volume level.
When your preferred audio level is reached,
simply release the button. Your RX75 PLUS
stores this setting in memory, even when
the power is turned off.
To mute the audio for a single specific
signal, briefly press the VOL/MUTE button
on the display controller, or the installed
Remote Mute Button during an alert. After
that radar encounter has passed, the volume
level will automatically reset and the audio
will alert you to the next encounter.
Remote Mute Button/Laser Blocking Off
When the Laser Blockers are turned on, (see
Programming section) the Remote Mute
button can be used to manually stop
“blocking” once you
have corrected
your speed.
Simply press the
Remote Mute
button twice
during the “Laser
Blocking” message, and the Laser
Blocker’s will cease to transmit. The
Laser Blocker’s will cease to transmit
for one minute. Once this time has
expired, the Laser Blocker’s will automatically reset, and return to their active
state. A reset message will be displayed to
verify and acknowledge the reset.
Controls and Features
Page 5
Highway / AutoScan / City Switch
The “City” button selects the RX75 PLUS’s
sensitivity. We recommend the “AutoScan”
mode for most driving.
The RX75 PLUS’s exclusive AutoScan
mode provides long-range warning, with
minimum false alarms. In this mode, the
RX75 PLUS’s internal computer continuously analyzes all incoming signals and
intelligently adjusts the sensitivity –
eliminating the majority of false alarms.
You can also select conventional
“Highway” and “City” modes. When driving
in urban areas where annoying X-band
intrusion alarms and door openers are
common, City Mode can be engaged to
lower X-band sensitivity and reduce X-band
alerts. Full sensitivity is maintained on all
other bands. You can customize the RX75
PLUS’s City Mode sensitivity. See the
Programming section for details.
Display Brightness
The RX75 PLUS’s display brightness is automatically adjusted to suit ambient light
conditions in your vehicle. (The light sensor
is located inside the text display window)
If you prefer, you can program your
RX75 PLUS for a fixed brightness level
(Maximum, Medium, Minimum, or Dark).
See the Programming section for details.
Dark Mode
If you set the RX75 PLUS to its Dark Mode
using the Programming feature, the RX75
PLUS changes to a very inconspicuous
power-on indication: a very dim “AD,”
“HD,” or “CD.” (In this display, the A, H, or
C indicates AutoScan, Highway, or City, and
the D indicates Dark.)
When the RX75 PLUS is in Dark Mode,
the display will not show visual alerts when
it detects signals. Only the audible alert will
tell you of detected signals. See the
Programming section for more details.
Audible Alerts
For Radar signals:
The RX75 PLUS uses a Geiger-counter-like
sound to indicate the signal strength and
type of radar signal being encountered.
When you encounter radar, a distinct
audible alert will sound and occur faster as
the signal gets stronger. This allows you to
judge
the distance from the signal source without
taking your eyes from the road. Each band
has a distinct tone for easy identification.
X-band = chirping
K-band = buzzing
Ka-band = double-chirp
For Laser signals:
Since Laser signals are a possible threat
no matter how weak, the RX75 PLUS alerts
you to all laser signals with a full laser alert.
6 7
Controls and Features Controls and Features
For Safety signals:
If you have turned on the SWS detection in the RX75 PLUS’s programming, it
will alert you to these signals with a doublebeep tone, and a corresponding text
message. A complete listing of the text
messages is on page 19.
If you haven’t programmed your RX75
PLUS to decode these safety signals (see
pages 9, 13, 19), it will still detect them as
K-band radar signals.
Signal Strength Meter
The RX75 PLUS’s matrix display consists of
280 individual LED’s, to provide an intuitive
ultra-bright display of signal strength and
text messages.
When the RX75 PLUS detects radar, it
displays the band of the radar signal (X, K,
or Ka), and a precise bar-graph of signal
strength.
Threat Display
™
The RX75 PLUS’s exclusive Threat Display
™
option is an advanced display for experienced detector users. Please use the RX75
PLUS for a few weeks to get fully familiar
with its other features before using its
Threat Display
™
.
To use the Threat Display
™
instead of
the standard bar-graph signal strength
meter, you must select Threat Display
™
in
RX75 PLUS’s Programming (see pages 9-13).
Threat Display
™
simultaneously tracks
multiple radar signals and provides the relative signal strength for each signal received.
Threat Display
™
can help you spot a
change in your normal driving environment;
for example, a traffic radar unit being
operated in an area where there are
normally other signals present.
The Threat Display
™
is actually a
miniature spectrum analyzer. It shows the
radar band, and its relative signal strength.
KA9 K1 X5
Above is the Threat Display™if the
RX75 PLUS was detecting 1 strong Kaband, 1 weak K-band, and a medium
X- band signal.
As you can see, there are numeric
values for signal strength after each band
designator. The higher the number, the
stronger the signal.
Note: If you use Threat Display
™
, the
brief signal shown in the power-on
sequence when you turn on your RX75
PLUS will also be in Threat Display
™
: an “X”
with descending numeric value.
A few more examples will help you
better see how the Threat Display
™
works.
K9 X2
Here Threat Display™shows 1 strong
K-band signal, and a weak X-band signal.
Page 6
Controls and Features
KA1 X1
Here Threat Display™shows 1 weak
Ka-band signal, and a weak X-band
signal.
X
On very weak signals, there will not
be a number at all. This shows a very
weak X-band signal.
Threat Display
™
Details
The band designators (X, K, Ka) will
stay on the display for a few seconds after
the signal has passed. This allows you to see
what the unit detected, even on very brief
signals.
However, the numbers representing
the signal strength continuously change
(several times a second) to give you a
continuous view of the signal strength of all
radar signals present.
TechDisplay
The RX75 PLUS’s new TechDisplay option
is also designed for the advanced detector
user. In this mode, the RX75 PLUS will
display the actual numeric radar frequency
being received.
K 24.150
Display shows a K-band signal at
24.150 GHz
Ka34.700
Display shows a Ka-band signal at
34.700 GHz
X 10.525
Display shows an X-band signal at
10.525 GHz
Note: Even long-time detector users will
require a significant amount of time to
get familiar with this new level of
information.
Laser Blocking
Your Bel Pro Remote is equipped with
integrated Laser Blocker’s, making it the
ultimate defense against laser guns.
Under the “Laser” option in the Bands
category, the Laser Blocker’s can be
programmed to receive only, or “Block” an
incoming laser signal.
During a laser alert, the display will
show “Front” “Lsr Blck” when a signal is
received from the front, or “Rear” “Lsr Blck”
when a signal is received from the rear. This
message will be accompanied by the normal
Laser alert tone.
8 9
How to customize the RX75 PLUS with Programming
There are 8 user-selectable options so you
can customize your RX75 PLUS for your
own preferences. The buttons that are
normally used for CITY and VOL/MUTE are
used to enter the Program Mode, to
REVIEW your current program settings,
and to CHANGE any settings as desired.
Pages 11-13 explain each option in more
detail.
How to use Programming
To enter Program Mode, press both
buttons and hold for 2 seconds. RX75
PLUS will beep twice and display
“Program.” (Brightness is at maximum
during programming.)
Then press the REV button to REVIEW
the current settings. (You can either tap
the button to change from item to item, or
hold the button to scroll through the items.)
Press the CHG button to CHANGE any
setting. (You can either tap the button to
change from setting to setting, or hold the
button to scroll through all the options).
To leave the Program Mode, simply wait
8 seconds without pressing any button.
(The unit will display “Complete,” beep 4
times, and return to normal operation.)
(To quickly return to all of the factory
defaults, press and hold the CITY and
VOL/MUTE buttons while turning on the
unit.)
1
2
3
4
An example
Here’s how you would turn RX75 PLUS’s
AutoMute feature off.
1 Enter the Program Mode by holding
both buttons down for 2 seconds. RX75
PLUS will beep twice and display
Program.
2 Press and hold the REV button.
The RX75 PLUS will scroll through the
categories, starting with Pilot Light
Pilot, then Power-on sequence PwrOn,
then Signal strength meter
Meter, then
AutoMute
aMute.
3 Release the REV button when the RX75
PLUS shows the AutoMute item. Since the
factory setting is for AutoMute to be on,
the RX75 PLUS will display
aMute ON.
(If you accidentally don’t release the
REV button in time, and RX75 PLUS goes
to the next category, hold the REV button
down again, and after RX75 PLUS scrolls
through all categories, it will begin again
at the top of the list.)
4 Press the CHANGE button to change
from
aMute ON to aMute OFF.
5 To complete the Programming, simply
wait 8 seconds without pressing any button.
The RX75 PLUS will display
Complete,
beep 4 times, and return to normal
operation.
Page 7
10 11
Overview of Programming Options
Press the REV button
to go from one category
to the next
PILOT LIGHT
(Power-on indication)
POWER-ON SEQUENCE
SIGNAL STRENGTH METER
AUTOMUTE
VOICE**
CITY MODE SENSITIVITY
BRIGHTNESS
BANDS
*RX75 PLUS’s Factory Default Settings
To reset RX75 PLUS to its original
factory settings, press and hold the
“CITY” and “VOL/MUTE” buttons
while turning the power on. The
RX75 PLUS’s display will provide a
“Reset” message, accompanied by
an audible alert, acknowledging the
reset.
**Available only with External Speaker
Pilot HWY
Pilot H
Pilot V
PwrOn STD
PwrOn FST
Meter STD
Meter THT
Meter TEC
aMute ON
aMute OFF
Voice On
Voice Off
City STD
City LoX
City NoX
Brt AUTO
Brt MIN
Brt MED
Brt MAX
Brt DARK
Bands ALL
Bands MOD
X ON or OFF
K ON or OFF
Ka ON or OFF
LSR ON or OFF or BLCK
SWS ON or OFF
Press the CHANGE button
to change your setting
within a category
*Full word: Highway or Auto or City
Letter: H or A or C
Vehicle voltage
*Standard power-on sequence
Fast power-on sequence
*Standard signal strength meter
Threat Display
™
TechDisplay
*AutoMute on
AutoMute off
*Voice on
Voice off
*Standard City mode sensitivity
Low X-band sensitivity in City Mode
No X-band sensitivity in City Mode
*Brightness adjusts automatically
Minimum brightness
Medium brightness
Maximum brightness
Dark Mode
*All bands enabled
One or more bands has been modified
Turn bands “ON” or “OFF” by holding
down the VOL/MUTE button
Details of Programming Options
Pilot Light (Power-on indication)
Note: When you are using the Dark mode,
the display will only show HD, AD, or CD,
(Highway-Dark, AutoScan-Dark, or CityDark).
PilotHWY (Full description)
In this setting, the RX75 PLUS will display
“Highway,” “City,” or “AutoScan” as its
power-on indication. (factory default)
Pilot H (Letter)
In this setting, the RX75 PLUS will display
“H” for Highway, “C” for City, or “A” for
AutoScan.
Pilot V (Vehicle voltage)
In this setting, the RX75 PLUS will display
“H” for Highway, “C” for City, and “A” for
Auto, and the vehicle’s voltage. If the
vehicle’s voltage drops below 10.5 volts, a
low voltage warning will be displayed,
followed by an audible alert. A high voltage
warning is also given when the vehicle’s
voltage goes above 16.0 volts.
Power-on Sequence
PwrOnSTD (Standard)
In this setting, each time you turn on the
RX75 PLUS, it will display “BEL PRO,”
“RX75,” “Laser,” “Ka-band,” “K-band,”
“X-band,” followed by a brief X-band alert. It
then confirms communications to all of its
components. If a communications error
occurs, the appropriate error message will
be displayed. (see page 21 for error messages)
Note: If there is a problem with the front
laser receiver or wiring after the initial
start-up sequence, the RX75 PLUS will
briefly display “LsrF ERR.” If there is a
problem with the rear laser receiver or
wiring after the initial start-up sequence,
the RX75 PLUS will briefly display “LsrR N/A.”
In both cases, the RX75 PLUS will
continue to receive radar signals, but will
not receive laser signals. If there is a
problem with the front radar receiver or
wiring after the initial start-up sequence,
the RX75 PLUS will display “Front N/A,”
and will then continue to display “Check,”
“Receiver,” “Wiring.” The RX75 PLUS will
not operate in this condition. Please
contact your installer if this occurs.
PwrOnFST (Fast power-on)
This setting shortens RX75 PLUS’s start up
sequence to a single beep, eliminating the
words “BEL PRO,” “RX75,” “Laser,”
“Ka-band,” “K-band,” “X-band,” from the
start-up sequence.
Page 8
Details of Programming Options
12 13
Signal Strength Meter
MeterSTD (Standard meter)
The meter displays the band, and bar graph
showing signal strength. (factory default)
MeterTHT (Threat Display
™
)
The meter simultaneously tracks multiple
radar signals and provides the relative signal
strength for each signal received.
MeterTEC (TechDisplay)
The meter displays the actual numeric
frequency of the radar signal being received.
Note: See more details on page 8.
AutoMute
aMute ON (AutoMute on)
In this setting, the RX75 PLUS’s audio alerts
will initially be at the volume you set, but
after a few seconds, the RX75 PLUS will
automatically reduce the volume level, to
keep you informed, but not annoyed.
(factory default)
aMuteOFF (AutoMute off)
With AutoMute off, the RX75 PLUS’s audio
alerts will remain at the volume you set for
the duration of the radar encounter.
Voice Alerts
VoiceON (Voice announcements on)
In this setting, all radar and laser alerts,
including SWS messages, will be announced
in a digital voice, followed by the normal
tone. (factory default)
VoiceOff (Voice announcements off)
In this setting, the standard tones will be
used.
City Mode Sensitivity
City STD (Standard)
In this setting, when you put the RX75
PLUS in the City mode, X-band sensitivity is
significantly reduced, to minimize
annoyance from X-band intrusion alarms
and motion sensors. (factory default)
City LoX (Low X-band sensitivity)
In this setting, when you put the RX75
PLUS in the City mode, X-band sensitivity is
reduced more than the standard setting.
This will reduce X-band alarms from other
sources even further, but also significantly
reduces range to X-band traffic radar.
City NoX (No X-band sensitivity)
In this setting, when you put the RX75
PLUS in the City mode, the RX75 PLUS will
not respond to any X-band signals.
WARNING: Only choose this setting if
you are absolutely certain that there
are no X-band traffic radar units
where you drive.
Note: These settings only apply when the
RX75 PLUS is operated in City mode. Xband sensitivity is not affected when used
in “Auto” or “Highway” modes.
Brightness
Brt AUTO (Auto)
Display brightness automatically adjusted to
suit the ambient lighting in your vehicle.
Brt MIN (Minimum)
Sets display to minimum brightness.
Brt MED (Medium)
Sets display to medium brightness.
Brt MAX (Maximum)
Sets display to maximum brightness.
Brt DARK (Dark)
In this setting, the RX75 PLUS will only
display a very dim HD, AD, or CD for the
power-on indication, and will not show any
visual alerts when signals are detected.
Bands
BandsALL
In this setting, all radar, laser, and SWS
frequencies are monitored. This is the
factory default setting, and it is highly
recommended that you use your RX75
PLUS in this mode.
BandsMOD
In this setting, the RX75 PLUS will warn you
with an audible alert and a text message,
that one or more bands have been turned
off in programming (i.e. “SWS OFF”). This
warning is displayed during the start-up
sequence (standard or fast).
WARNING: Do not disable a radar or
laser band unless you are certain it is
not used for speed measurement in
your area.
Details of Programming Options
Page 9
Interpreting Alerts Interpreting Alerts
14 15
Although the RX75 PLUS has a
comprehensive warning system and this
handbook is as complete as we can make it,
only experience will teach you what to
expect from your RX75 PLUS and how to
interpret what it “tells” you. The radar alerts
you receive are affected by the specific type
of radar being used, the type of transmission
(continuous or instant-on) and the location
of the radar source.
The following examples will give you
an introduction to understanding the RX75
PLUS’s warning system for radar, laser and
safety alerts.
Explanation
You are approaching a continuous radar
source aimed in your direction.
An instant-on radar source is being used
ahead of you and out of your view.
An instant-on radar source or laser source is
being used nearby. This kind of alert
requires immediate attention!
Laser is being used in the area. Because laser
is inherently difficult to detect, any laser
alert may indicate a source very close by.
A moving patrol car with continuous radar
is overtaking you from behind. Because
these signals are reflected (reflections are
increased by large objects), they may or may
not eventually blend into a solid tone even
when the patrol car is directly behind you.
Explanation
You are approaching a radar unit concealed
by a hill or an obstructed curve.
A patrol car is travelling in front of you with
a radar source aimed forward. Because
signals are sometimes reflected off of large
objects and sometimes not, the alerts may
seem inconsistent.
A patrol car is approaching from the other
direction, sampling traffic with instant-on
radar. Such alerts should be taken seriously.
You are driving through an area populated
with radar motion sensors (door openers,
burglar alarms, etc.). Since these transmitters
are usually contained inside buildings or
aimed toward OR away from you, they are
typically not as strong or lasting as a real
radar encounter.
CAUTION: Since the characteristics of
these alerts may be similar to some of
the preceding examples, over
confidence in an unfamiliar area can be
dangerous. Likewise, if an alert in a
commonly traveled area is suddenly
stronger or on a different band than
usual, speed radar may be set up
nearby.
Alert
The RX75 PLUS begins to sound slowly,
then the rate of alert increases until the alert
becomes a solid tone. The Signal Meter
ramps accordingly.
The RX75 PLUS emits short alerts for a few
seconds and then falls silent only to briefly
alert and fall silent again.
The RX75 PLUS suddenly sounds a continuous tone for the appropriate band
received. All segments in the Signal Strength
Meter are lit.
A brief laser alert.
The RX75 PLUS receives weak signals.
These signals may be a little stronger as you
pass large, roadside objects. The signals
increase in frequency.
Alert
The RX75 PLUS alerts slowly for awhile and
then abruptly jumps to a strong alert.
The RX75 PLUS alerts intermittently. Rate
and strength of alerts may be consistent or
vary wildly.
The RX75 PLUS alerts intermittently. Rate
and strength of signal increases with each
alert.
The RX75 PLUS gives an X-band alert
intermittently.
Page 10
How Radar Works How Laser Works
16 17
How Radar Works
Traffic radar, which consists of microwaves,
travels in straight lines and is easily reflected
by objects such as cars, trucks, even
guardrails and overpasses. Radar works by
directing its microwave beam down the
road. As your vehicle travels into range, the
microwave beam bounces off your car, and
the radar antenna looks for the reflections.
Using the Doppler Principle, the radar
equipment then calculates your speed by
comparing the frequency of the reflection
of your car to the original frequency of the
beam sent out.
Traffic radar has limitations, the most
significant of these being that it typically can
monitor only one target at a time. If there is
more than one vehicle within range, it is up
to the radar operator to decide which target
is producing the strongest reflection. Since
the strength of the reflection is affected by
both the size of the vehicle and its
proximity to the antenna, it is difficult for
the radar operator to determine if the signal
is from a sports car nearby or a semi-truck
several hundred feet away.
How Laser (Lidar) Works
Laser speed detection is actually LIDAR
(Light Detection And Ranging). LIDAR guns
project a beam of invisible infrared light.
The signal is a series of very short infrared
light energy pulses which move in a straight
line, reflecting off your car and returning to
the gun. LIDAR uses these light pulses to
measure the distance to a vehicle. Speed is
then calculated by measuring how quickly
these pulses are reflected given the known
speed of light.
LIDAR (or laser) is a newer technology
and is not as widespread as conventional
radar; therefore, you may not encounter
laser on a daily basis. And unlike radar
detection, laser detection is not prone to
“false” alarms. Because LIDAR transmits a
much narrower beam than does radar, it is
much more accurate in its ability to
distinguish between targets and is also more
difficult to detect. As a result, even the
briefest laser alert should be taken
seriously.
There are limitations to LIDAR
equipment. LIDAR is much more sensitive
to weather conditions than RADAR, and a
LIDAR gun’s range will be decreased by
anything affecting visibility such as rain, fog,
or smoke. A LIDAR gun cannot operate
through glass and it must be stationary in
order to get an accurate reading.
Because LIDAR must have a clear line
of sight and is subject to cosine error (an
inaccuracy which increases as the angle
between the gun and the vehicle increases)
police typically use LIDAR equipment
parallel to the road or from an overpass.
LIDAR can be used day or night.
Radar range also depends on the power
of the radar equipment itself. The strength
of the radar unit’s beam diminishes with
distance. The farther the radar has to travel,
the less energy it has for speed detection.
Because intrusion alarms and motion
sensors often operate on the same
frequency as X-Band radar, your The RX75
PLUS will occasionally receive non-police
radar signals. Since these X-Band
transmitters are usually contained inside of
buildings or aimed toward the ground, they
will generally produce much weaker
readings than will a true radar encounter.
As you become familiar with the sources of
these pseudo alarms in your daily driving,
they will serve as confirmation that your
The RX75 PLUS’s radar detection abilities
are fully operational.
Page 11
How Safety Radar Works SWS Safety Radar Text Messages
18 19
How Safety Warning Systems Works
Safety Warning Systems, or SWS, is a
modified K-band radar signal used to
transmit important driving related
information.
From the factory, your RX75 PLUS is
programmed with SWS turned ON. If SWS is
not used in your area, you can simply turn
SWS reception OFF by using the RX75
PLUS’s Programming feature.
The SWS system has 64 possible
messages (60 allocated). The SWS messages
your RX75 PLUS can decode and display are
listed on the facing page.
SWS Text Messages
1 WorkZone
2 Road Closed
3 Bridge Closed
4 WorkCrew Highway
5 WorkCrew Utility
6 Detour
7 Truck Detour
8 MustExit
9 Rtlane Closed
10 CntrLane Closed
11 LeftLane Closed
12 Future Use
13 Police
14 Train
15 Low Overpass
16 BridgeUp
17 Bridge Wt Limit
18 RockSlid Area
19 School Zone
20 Road Narrows
21 Sharp Curve
22 Croswalk
23 Deer Crossing
24 Blind or Deaf Kid
25 SteepUse LowGear
26 Accident
27 PoorRoad Surface
28 Loading ScholBus
29 DontPass
30 Dangrous Intrsect
31 Emergncy Vehicle
32 Future Use
33 HighWind
34 Severe Weather
35 HeavyFog
36 Flooding
37 BridgIce
38 RoadIce
39 Dust Blowing
40 Sand Blowing
41 Blinding Snow
42 Future Use
43 RestArea
44 RestArea w/servic
45 24hrFuel
46 Insp Stn Open
47 Insp Stn Closed
48 Reduced Speed
49 Speed Enforced
50 HazMatls Exit
51 Expect Delay
52 10 Min Delay
53 20 Min Delay
54 30 Min Delay
55 1 Hour Delay
56 Traffic TunRadio
57 Pay Toll
58 Trucks ExitRght
59 Trucks ExitLeft
60 Future Use
61 Emerg Veh Mvng
62 Police Pursuit
63 Oversize Vehicle
64 SloMovng Vehicle
Note: Some of the safety messages have
been condensed, so each message can be
displayed on one or two screens on the
RX75 PLUS’s eight character display.
Since Safety radar technology is
relatively new and the number of
transmitters in operation is not yet
widespread, you will not receive Safety
signals on a daily basis and should not be
surprised to encounter emergency vehicles,
road hazards and railroad crossings that are
unequipped with these transmitters and,
therefore, fail to provide a signal. As Safety
transmitters become more prevalent (the
number of operating transmitters is growing
every day), these Safety radar signals will
become more common.
For more information and details about
SWS safety radar, visit their web site at
www.swslc.com.
Page 12
Troubleshooting Troubleshooting
20 21
Problem
The RX75 PLUS beeps briefly at the
same location every day, but no
radar source is in sight.
The RX75 PLUS does not seem
sensitive to radar or laser.
The RX75 PLUS did not alert when a
police car was in view.
The RX75 PLUS did not provide a
Safety signal while within range of
an emergency vehicle.
The RX75 PLUS’s audible alerts are
less loud after the first few alerts.
The RX75 PLUS’s power-on
sequence reoccurs while you are
driving.
Your 14-year old son has changed all
8 of the Programming options.
The RX75 PLUS will not turn on.
The RX75 PLUS’s Display feels
warm.
Solution
• An X-band motion sensor or intrusion alarm is located within
range of your route. With time, you will learn predictable
patterns of these signals.
• The RX75 PLUS may be in City Mode.
• Radar band(s) are turned off in programming.
• VASCAR, (Visual Average Speed Computer And Recorder) a
stopwatch method of speed detection, may be in use. Officer
may not have radar or laser unit turned on.
• Safety transmitters may not be commonly used in your area.
• The RX75 PLUS is in AutoMute Mode. See page 5 for details.
• A loose power connection can cause the RX75 PLUS to be
briefly disconnected, and will retrigger the power-on
sequence.
• You can return all of the programming options to the factory
defaults by holding down the City and Mute buttons while you
turn the RX75 PLUS on.
• Check that volume control is ON.
• Check that vehicle ignition is ON.
• Check all connections.
• It is normal for the RX75 PLUS to feel warm.
Explanation of Displays
LsrF ERR
LsrR N/A
Check
Receiver
Wiring
HD
AD
CD
PilotHWY
WorkZone
X2 ,or K9 ,
or KA7,etc.
Self Cal
Rcvr ERR
Blck OFF
Comm ERR
There is a problem with the front Laser Receiver. There could be an unplugged
connection, damaged wiring, or a problem with the front Laser Receiver. After the
RX75 PLUS alerts you to this, it will then resume operation with the front radar
receiver and rear laser only.
There is a problem with the rear Laser Receiver. It could be an unplugged
connection, damaged wiring, or a problem within the rear Laser Receiver itself. After
the RX75 PLUS alerts you to this, it will then resume operation with the front radar
and Laser Receiver only.
There is a problem with the front receiver. It could be an unplugged connection,
damaged wiring, or a problem within the front receiver itself. The RX75 PLUS will
continue to display this message, and will not operate until the problem has been repaired.
Sensitivity control is in Highway mode, display is in Dark Mode (page 13)
Sensitivity control is in Auto mode, display is in Dark Mode (page 13)
Sensitivity control is in City mode, display is in Dark Mode (page 13)
One of the many programming messages (pages 9-13)
One of the many Safety Radar messages (page 19)
The RX75 PLUS has been programmed in the Threat Display
™
Mode (page 8)
The RX75 PLUS is running a self-calibration test.
The RX75 PLUS’s radar receiver has failed to calibrate. Contact your Dealer for repair.
Laser Blockers were manually shut off during a laser alert.
Serial communications between the interface and the display have been
interrupted. Contact your dealer for repair.
Page 13
23
Service
22
Service Procedure
If your RX75 PLUS ever needs service,
please follow these steps:
1 Check the troubleshooting section of
this manual. It may have a solution to your
problem.
2 Contact your installing dealer. They
will evaluate your unit and arrange repairs if
necessary.
Parts
Replacement parts are available from your
installing dealer.
Accessories
The following accessories are available
through your local dealer:
• 12-volt Amplified External Speaker.
BELTRONICS One Year Limited Warranty
BELTRONICS warrants your RX75 PLUS
against all defects in materials and
workmanship for a period of one (1) year
from the date of the original purchase,
subject to the following terms and conditions:
The sole responsibility of BELTRONICS
under this Warranty is limited to either
repair or, at the option of BELTRONICS,
replacement of the RX75 PLUS detector.
There are no expressed or implied
warranties, including those of fitness for a
particular purpose or merchantability,
which extend beyond the face hereof.
Some states do not allow limitations on how
long an implied warranty lasts, so the above
limitations may not apply to you.
This warranty does not cover installation,
removal or reinstallation charges.
BELTRONICS is not liable for any incidental
or consequential damages arising from the
use, misuse, installation, or mounting of the
RX75 PLUS. Some states do not allow the
exclusion or limitation of incidental or
consequential damages, so the above
limitation or exclusion may not apply to you.
This Warranty gives you specific rights.
You may have other legal rights which vary
from state to state. This Warranty does not
apply if the serial number on the housing of
the RX75 PLUS has been removed, or if
your RX75 PLUS has been subjected to
physical abuse, improper installation, or
modification.
Register
online:
@
www.
beltronicspro
.com
BELTRONICS PRODUCT REGISTRATION CARD
If you purchased your detector directly from BELTRONICS, you do not need to fill this out.
If you did not purchase your detector directly from BELTRONICS, please fill out this section and return to us,
or register online at our web address: www.beltronics.com.
1. First Name:___________________ Middle Initial____ Last Name__________________________
Address______________________________________________________________________
City_______________________________________ State_____________ ZIP______________
Phone Number (In case we have a question)_____________________________________________
2. Product Purchased________________________ Model___________ Serial Number___________
3. Place of Purchase__________________________________ Date_________ Price____________
4. Primary reason for purchasing this BELTRONICS product____________________________________
____________________________________________________________________________
____________________________________________________________________________
Remove card along perforations
Page 14
2524
Remove card along perforations
Features and Specifications
Operating Bands
• X-band 10.525 GHz ± 25 MHz
• K-band 24.150 GHz ± 100 MHz
• Ka-band 34.700 GHz ± 1300 MHz
• Laser 900nm, 33 MHz bandwidth
Radar Receiver / Detector Type
• Superheterodyne, GaAs FET VCO
• Scanning Frequency Discriminator
• Digital Signal Processing (DSP)
• 4-bit High-Resolution A-to-D Converter
Laser Detection
• Quantum Limited Video Receiver
• Multiple Laser Sensor Diodes (6F, 3R)
Display Type
• Text/Matrix 280 AlGaAs LED
• Bar Graph or Threat Display
• Automatic Brightness Control
Power Requirement
• 12VDC, Negative Ground
Programmable Features
• Power-On Indication
• Power-On Sequence
• Signal Strength Meter
• AutoMute
• Voice Alerts
• City Mode Sensitivity
• Display Brightness
• Bands
Sensitivity Control
• AutoScan
• Highway
• City
Auto Calibration Circuity
Complete VG2 Immunity
Dimensions (Inches)
• Display/Controller: 4.2 x 1.4 x .55
• Radar Receiver: 3.75 x 3.15 x 1.75
• Front Laser Receiver: 4.65 x 1.8 x 0.8
• Rear Laser Receiver: 6.0 x 1.0 x .65
Patented Technology
The RX75 PLUS is covered by one or more
of the following US patents.
6,400,305 6,249,218 6,069,580 5,600,132
5,587,916 5,668,554 5,559,508 5,365,055
5,347,120 5,446,923 5,402,087 5,305,007
5,206,500 5,164,729 5,134,406 5,111,207
5,079,553 5,049,885 5,049,884 4,961,074
4,954,828 4,952,937 4,952,936 4,939,521
4,896,855 4,887,753 4,862,175 4,750,215
4,686,499 4,631,542 4,630,054 4,625,210
4,613,989 4,604,529 4,583,057 4,581,769
4,571,593 4,313,216 D314,178 D313,365
D310,167 D308,837 D296,771 D288,418
D253,752
The RX75 PLUS is also covered by one or
more of the following Canadian patents:
1,295,715 1,295,714 1,187,602 1,187,586
Other patents pending.
Specifications
ATTN CUSTOMER SERVICE
BELTRONICS INC
5442 WEST CHESTER RD
WEST CHESTER OH 45069-9789
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