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  Beltronics STi Magnum Radar Detector

Beltronics STi Magnum Radar Detector

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30 Day Return Policy
Our Price: $499.95

Product Code: STI-MAGNUM

Description Freqently Asked Questions

re you a professional driver who needs a stealth radar detector?

The use of a radar detector in a commercial vehicle weighing over 10,000 pounds is prohibited across the entire US, by title 49 of the US Department of Transportation.

Also radar detectors are illegal in all vehicles in Virginia, Washington DC, on all US military bases.

To enforce these laws police use a device called the Spectre RDD (radar detector detector) that can detect the emissions from most radar detectors.

Because of this if you’re a professional driver or live and/or drive in areas where radar detectors are illegal, you need a detector that is stealth to these RDD devices.

Twin Antenna Design:

The Beltronics STi Magnum uses the M3 twin antenna design that delivers extreme range on all radar detector bands while also making it stealth against all the radar detector detector devices in use today.

Dual Signal Processing:

The Bel STi Magnum antenna system analyzes all incoming radio frequency signals and automatically filters out false alarms. The result is one of the top performing long-range radar detector ever made.

DSP Digital Signal Processing:

Unlike many other radar detectors, the Bel STi Magnum analyzes all incoming microwave radio signals and filters out most false alerts.

Three Levels of Sensitivity:

Choose from three levels of sensitivity; Highway (full sensitivity), Auto (filtered mode), Auto NoX (Filtered no X band)


My wife’s biggest complaint in having a radar detector in her car is the continuous loud auto alerts that some radar detectors have. The STi solves this problem in that it automutes its volume level during its alert. My wife is happy, so I am happy.

Easy Programming:

The Bel Magnum is a snap to program and set-up for its advanced features. The Sti Magnum is pre-programmed and ready to go out of the box, but some of our power users may want to set the unit up to complement their own driving experience and personal preference. The easy to use STi’s preferences menu allows you to do this in a snap. Don’t drive in an area where X band is used, turn it off; rather use the Expert Meter display, turn it on. It is that easy.

Escort Live Compatible:

The Beltronics STi Magnum is Escort Live compatible allowing you to join Escort’s/Beltronics live radar detector community to receive real time alerts through your iPhone or Android device.

Brightness Control with Full Dark Mode:

One of my tricks to catch truckers with radar detectors when I was a cop was to blast them with a radar gun at night when they were in close proximity and watch for the LED lights flashing on their windshield.

Off Axis Laser Detection:

The Bel STI utilizes multiple laser sensors are strategically positioned to detect event the smallest amount of lidar, including off axis.
Comments and Customer Photos
Power Requirement
12VDC, Negative Ground
Coiled SmartPlug™ with Mute Button
Direct-wire SmartPlug™ with Mute Button

Operating Bands
X-band: 10.525 GHz ± 25 MHz
K-band: 24.150 GHz ± 100 MHz
Ka-band: 34.700 GHz ± 1300 MHz
Laser: 904nm, ± 13nm

Radar Receiver
Dual-LNA Microwave Receiver
Superheterodyne, Varactor Tuned VCO
Scanning Frequency Discriminator
Digital Signal Processing (DSP)

Programmable Features
Power-On Indication
Alert Lamp
Voice Alerts
Power-On Sequence
Signal Strength Meter
Sensitivity Control
City / City NoX

Laser Detection
Quantum Limited Video Receiver
(5) Optical Laser Sensors

Display Type
280 LED Alphanumeric
Bar Graph, Threat Display™, Tech Display™
Automatic, plus 4 levels of fixed brightness including full Dark

Additional Patented Technology
Auto Calibration Circuitry
Mute / AutoMute™ / SmartMute™
TotalShield™ Technology

Dimensions (Inches)
1.25(H) x 2.75(W) x 4.75(L)

Average Rating: 4.5 of 5 | Total Reviews: 65 Write a review »

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  4 of 4 people found the following review helpful:
Great Range August 23, 2014
Reviewer: Risi from Greenville, SC  
Great range, and display.

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  4 of 4 people found the following review helpful:
Best stealth detector to date August 20, 2014
Reviewer: Oracle from Central Valley  
I bought this undetectable Bel STi Driver after my Valentine V1 was both detected and confiscated by a Spectre-toting police officer.  The sensitivity is comparable to the V1's in the Ka bands.  Minor drawbacks include too much falsing in the optional POP mode, a sub-standard internal speaker, and no provision for a remote display.  Overall, I'm fully satisfied with its performance to date, and co

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  4 of 4 people found the following review helpful:
Excellent unit August 4, 2014
Reviewer: Scro from Northern NJ  
Great unit but I find that it overheats too quickly on hot summer days with the sun beating down on it. AC does not make a difference. On long trips I have to disconnect it to give it time to cool down. The problem may be the titanium case.

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  4 of 4 people found the following review helpful:
Don't Be Misled....... July 28, 2014
Reviewer: Richard from Dallas, TX  
Don't be misled by this radar detector's understated appearance.......this is a tremendous bargain by far!!  Great, long-range sensitivity, minimal false alarms in crowded city conditions and.......best of all......it is invisible to the 'radar detector-detectors' that are in use.  I commute frequently to places where radar detectors are not allowed and it is great to have the security this little

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  4 of 4 people found the following review helpful:
The Top of The Rock July 28, 2014
Reviewer: Vic from Montreal,QC  
Clearly the most sensative unit I have ever used. Has paid for itself many times over. While it does not have all of the features I would like to see in the most premium unit on the market, this is without question the best you can get!

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