Beltronics STi Magnum Radar Detector Review
Overview of the Beltronics STi Magnum
The main benefits of choosing the Beltronics STi Magnum are:- Programmed with Escort’s digital signal processing algorithm (DSP)
- 8-times the range of a police radar gun
- Ability to Segment Ka-Band
- Stealth to all radar detector detectors including the Spectre
- The ability to filter out some of the false alerts caused by the anti-collision sensors installed in new cars today
- Easy to read LED display
- Clear digital voice alerts
Digital Signal Processing (DSP) Algorithm
When investing in a radar detector two of your biggest concerns is the detector’s ability to sniff out real police radar threats and its ability to filter out false alerts, here is why.Police departments across the world are now in the process of updating their equipment to the new, low power battery operated hand held digital radar guns.
All of these types of radar guns are instant on, meaning that they do NOT transmit any radar signal until the officer has a target vehicle in sight and presses the trigger.
Because of this when you select your radar detector, an important consideration is its ability to detect instant on miles away.
Then another problem, the anti-collision sensors that are being installed in most new cars today.
These sensors operate on the same K-Band frequency that police use and because of this most radar detectors constantly false alert.
Because of this Bel developed TSR filtering algorithm for their detectors.
This enables the Beltronics STi Magnum to sniff out and alert to these low power radar guns at over 8 times their capture distance, while also having the ability to block out some of those annoying false alerts.
Stealth to all Radar Detector Detectors
The Beltronics STi Magnum is stealth to all radar detector detectors including the Spectre, which makes the Beltronics STi Magnum the detector of choice if you live and/or drive in Virginia or if you’re a professional driver.Escort Live Ready
The biggest break through this decade in the speed counter measurement community is the ability for your radar detector to share historical and real time data with accuracy, with other radar detectors in the cloud.By interfacing The Beltronics STi Magnum with the optional Bluetooth power cord will enable you to connect to the Escort Live community through your iPhone and/or Android smartphone.
This enables your Beltronics STi Magnum to:
- Alert you of real time police spotted alerts
- Alert you of real time radar and laser speed traps in your area
- Alert you of historical speed trap locations including aircraft enforcement locations
- Alert you of fixed photo enforcement camera locations
- Enables you to program the advanced features of your detector through your smart phone
Easy to Read LED Display
The Beltronics STi Magnum has an easy to read, bright red LED display.Additional features include:
- Bar Graph – identifying the signal strength of the threat
- SpecDisplay – identifies the actual numeric frequency of the radar signal
- 5 levels of brightness including full dark mode
Clear Audible Voice Alerts
The Beltronics STi Magnum has easy to understand voice alerts, which warns you of approaching threats, enabling you to keep your eyes on the road and not on your detector.User Preferences Programming
You can access the advanced programming features of your Beltronics STi Magnum by pressing the buttons on your detector enabling you to:- Sensitivity – City, Highway, Auto, AutoNoX
- Ka band segmentation
- Display meter options
- Audible tones
- Automute – On/Off
- Voice – On/Off
Included Accessories
Your Beltronics STi Magnum comes shipped to your door with everything you need including:- Windshield mount
- 12-volt power cable
- Carrying case
Motorcycle Use
When accessorized with the proper motorcycle mount, external warning device, and weather protection, the STi Magnum becomes a great detector for your motorcycle.Motorcycle Mounting Systems: RadarBusters offers a variety of motorcycle radar detector and cell phone mounts by Techmount, which will fit virtually any motorcycle.
External Warning Device: The STi Magnum does have an external earphone jack, which you can plug into your motorcycle sound system. However, we would recommend the Legal Speeding HARD system, which is a wireless heads up display.
Weather Protection: There are several websites that sell “motorcycle radar detector boxes,” but we don’t recommend them. Instead, go to your local CVS and buy a child’s size shower cap. It’s cheaper and will protect your detector just as well.
Warranty & Support
Your STi Magnum comes with Beltronics's 1-year warranty and Radar Roy's 30-day no risk money back guarantee.Also, here on RadarBusters, Radar Roy has several articles in his help guide section to assist you in getting the most out of your detector such as: How to Maximize the Use of your Radar Detector, How to Update Your Radar Detector, and Defensive Driving Tips for Radar Detector Users.
You’re welcome to contact Radar Roy direct 24/7 by using the contact form on this website or calling our toll free number during normal business hours.
Why Buy from Radar Roy?
Authorized Escort Dealer: RadarBusters has been an authorized dealer for Beltronics 1997, so you can be assured that you detector is covered under Beltronics warranty program.

Real Reviews: Unlike the other radar detector review websites out there, Radar Roy is a retired cop and certified traffic radar instructor with over 40 years of experience and has his own arsenal of police radar and laser guns. Luxury Automotive was so impressed with Roy’s high standards and qualifications that they dubbed him the “ General Schwarzkopf of radar detectors ”.
No Sales Tax: You will not be charged sales tax as long as your order is shipped outside of Arizona.
No Risk 30-Day money back guarantee: Don’t like your detector? Return it no questions asked!
Low Price Guarantee: By becoming a member of Radar Roy’s VIP Club you will receive his 90-day price match guarantee, ensuring that you will get the best price anywhere!
Trade Up – Not In: Considering trading your old radar detector for a new one? DON”T until you watch this video!
Radar Roy Support: Have a problem or concern with your detector? Then email Radar Roy 24/7 and he will PERSONALLY get back with you typically within 12 hours or less!
Beltronics STi Magnum vs. Beltronics STI Driver
The Bel STi Driver was Beltronics first stealth windshield mounted radar detector, which was replaced by the Bel STi Magnum.
The main difference between these two detectors is that the STi Magnum has an improved LNA (low noise amplifier) and the ramp up was improved.
Beltronics STi Magnum vs. Beltronics STiR Plus
The STi Magnum is a windshield mounted radar detector while the STiR Plus is a remote mounted radar detector.
Also the STiR Plus includes an internal GPS and the Escort Defender photo enforcement database.
Beltronics STi Magnum vs. Escort REDLiNE
Beltronics and Escort are the same company so both of these radar detectors share many of the same features and performance, however there are two main differences.
The case on the STi Magnum is magnesium, thus its name.
But the main difference is that the REDLiNE has a feature where you can segment Ka-band, transforming it to what some people call a REDLiNE XR.
The main benefit of segmentation is that you’re radar detector will scan faster and a reduction of false alerts.
Do You Have a more comprehensive Beltronics STi Magnum Review?
One of our most popular reviews is our instant on Ka-band radar test and our constant on K-band radar test where we review the Passport Max2, the Escort REDLiNE, the Escort Passport and the Uniden LRD950.
Now even though the STi Magnum was not included in this test, the performance would be identical to that of the REDLiNE featured in both videos.
Is the Beltronics STi Magnum Stealth?
Yes, the Bel STi Magnum is stealth to all radar detector detectors including the Spectre RDD.
Which is the best undetectable radar detector?
I would classify the Escort REDLiNE as the best stealth windshield mounted radar detector because of its segmentation feature and the Bel STiR Plus as the best remote mounted stealth radar detector.
Beltronics STi Magnum vs. Valentine 1
One major difference between the STi Magnum and the Valentine 1 is that the V1 is not stealth to radar detector detectors.
Another difference is the filtering characteristics of the Valentine One, here is what Car and Driver had to say:
Beltronics STi Magnum vs. Pro 500
The Beltronics Pro 500 is a GPS enabled windshield mounted radar detector similar to the Escort 9500ix and I no longer recommend either of these radar detectors, here is why.
Over the past several years’ car manufactures have begun installing adaptive cruise control sensors into their new cars that use the same K-band frequency that police radar guns use.
And older model radar detectors like the Pro 500, the 8500x50 and the 9500ix are unable to filter out false alerts caused by these devices.
Also another problem is that police agencies have been upgrading their equipment to the newer handheld digital radar guns, which are lots harder to detect.
Because of this Escort developed a new digital signal-processing (DSP) program that is able to filter out most of these false alerts, while also enabling their newer detectors to detect these emerging threats.
The four detectors that we recommend that have this new DSP technology include the Passport, the Passport Max, the Passport Max2 and the REDLiNE.
The Bel STi Driver was Beltronics first stealth windshield mounted radar detector, which was replaced by the Bel STi Magnum.
The main difference between these two detectors is that the STi Magnum has an improved LNA (low noise amplifier) and the ramp up was improved.
Beltronics STi Magnum vs. Beltronics STiR Plus
The STi Magnum is a windshield mounted radar detector while the STiR Plus is a remote mounted radar detector.
Also the STiR Plus includes an internal GPS and the Escort Defender photo enforcement database.
Beltronics STi Magnum vs. Escort REDLiNE
Beltronics and Escort are the same company so both of these radar detectors share many of the same features and performance, however there are two main differences.
The case on the STi Magnum is magnesium, thus its name.
But the main difference is that the REDLiNE has a feature where you can segment Ka-band, transforming it to what some people call a REDLiNE XR.
The main benefit of segmentation is that you’re radar detector will scan faster and a reduction of false alerts.
Do You Have a more comprehensive Beltronics STi Magnum Review?
One of our most popular reviews is our instant on Ka-band radar test and our constant on K-band radar test where we review the Passport Max2, the Escort REDLiNE, the Escort Passport and the Uniden LRD950.
Now even though the STi Magnum was not included in this test, the performance would be identical to that of the REDLiNE featured in both videos.
Is the Beltronics STi Magnum Stealth?
Yes, the Bel STi Magnum is stealth to all radar detector detectors including the Spectre RDD.
Which is the best undetectable radar detector?
I would classify the Escort REDLiNE as the best stealth windshield mounted radar detector because of its segmentation feature and the Bel STiR Plus as the best remote mounted stealth radar detector.
Beltronics STi Magnum vs. Valentine 1
One major difference between the STi Magnum and the Valentine 1 is that the V1 is not stealth to radar detector detectors.
Another difference is the filtering characteristics of the Valentine One, here is what Car and Driver had to say:
“One annoyance is incessant false alarms—the Valentine’s filtering isn’t very effective. On our 22-mile loop, the V1 called out 53 threats in its most selective mode, which reduces but doesn’t eliminate X-band alerts. Turning off X-band is an involved process that you wouldn’t bother with on an interstate exit ramp. Determining what’s a cop and what’s not is left to the driver…”
Beltronics STi Magnum vs. Pro 500
The Beltronics Pro 500 is a GPS enabled windshield mounted radar detector similar to the Escort 9500ix and I no longer recommend either of these radar detectors, here is why.
Over the past several years’ car manufactures have begun installing adaptive cruise control sensors into their new cars that use the same K-band frequency that police radar guns use.
And older model radar detectors like the Pro 500, the 8500x50 and the 9500ix are unable to filter out false alerts caused by these devices.
Also another problem is that police agencies have been upgrading their equipment to the newer handheld digital radar guns, which are lots harder to detect.
Because of this Escort developed a new digital signal-processing (DSP) program that is able to filter out most of these false alerts, while also enabling their newer detectors to detect these emerging threats.
The four detectors that we recommend that have this new DSP technology include the Passport, the Passport Max, the Passport Max2 and the REDLiNE.
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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 Display Power-On Indication Alert Lamp Voice Alerts Power-On Sequence Signal Strength Meter AutoMute™ Brightness Bands |
Sensitivity Control Highway AutoScan™ 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) |

