Radar Detector Review - Escort 9500ix

The Escort 9500ix is the Escorts Premier windshield mounted detector available today. With innovative technology, this is one of the most technologically advanced radar detectors available.'
First and foremost, the 9500ix has great radar detection range. In independent tests, it has been one of the top performers in all radar bands and laser detection. From straight ahead radar sources to around the corner ambush attacks; this detector is superb at keeping the driver protected.
As with all Escort detectors, the sensitivity of this unit is fully adjustable. The three main sensitivity modes are "City", Highway", and "Auto". The "Auto" mode is best suited for all situations of driving because of its unique ability to filter out false alarms which may come from sources other than police officers. With many other detectors, they will alert to automatic doors and certain other radar detectors. This device has the exceptional ability to disregard these false alarms.
The greatest feature of this unit is its GPS capabilities. This industry leading feature allows the radar detector to access a constantly updated database of speed camera and red light camera locations. As the driver approaches a speed camera or red light camera, the radar detector will alert to the upcoming location allowing the driver ample time to slow down, or be aware of the red light camera.
The GPS also allows the speed of the vehicle to be displayed as an alert is recognized. Rather than seeing the detector alert to a threat, looking at the car's speedometer, then slowing down, with the speed display the driver simply sees the speed on the detector, and slows down accordingly. When milliseconds of reaction time are crucial in some situations, this feature puts the used ahead of any other detector user.
Another great feature of the GPS function is the variable speed radar sensitivity. The radar detector automatically detects the speed of the vehicle being driven. According to this speed, the detector will adjust radar sensitivity. It is essentially a more convenient way of switching modes, without actually having to think about it.
For example, the driver is traveling at highway speeds. The radar detector will automatically detect the speed, and increase the radar sensitivity. Then as the driver approaches a town along the highway, the radar detector senses this decrease in speed, and increases the ability to filter out false alarms.
The last, and arguably the best feature of the GPS is the ability to memorize false alarms. This is known as the "AutoLearn" feature. If a radar source is encountered at the exact same location multiple times, from for example a grocery store, the GPS feature will mark and retain the exact location of the radar false alert, and the next time the driver passes the source; the alert will be completely ignored. This feature is especially helpful for people who drive through cities often. If an actual threat does appear at a known radar false alarm, the detector will sense this new radar source, and alert to it. This is great for towns with sneaky police officers, but with this detector, the driver will be provided with advanced forewarning of the oncoming threat.
The Escort 9500ix radar detector also comes with many other outstanding features including voice alert and intelligent volume control. With the voice alert, as a threat is detected, the alarm will alert and the voice alert will announce the band of radar that is being used. Paired with the intelligent volume control, the voice alert is a valuable feature. As the vehicle speed increases, the intelligent volume control will increase the volume, allowing the alerts to be audible over higher speed road noise. As the vehicle slows, the volume is decreased.
The Escort 9500ix is a great radar detector, with industry leading technology, and innovative design. This will remain one of the best available detectors on the market for years to come.
"Radar" Roy Reyer is a certified traffic radar instructor and retired police officer who is a recognized expert in the field of speed counter measurement equipment such as radar detectors, jammers and anti photo radar devices. Click here to read more of Roy's radar detector reviews
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Police Radar Calibration - The Old Bait and Switch Game

Hi everybody, Richard Wallace here again with my latest article in the continuing series of articles. In this, the fourth article in the series, I am about to blow the lid off and truly reveal insider information on police radar calibration that will just leave you absolutely stunned and in complete disbelief. You will learn why I believe 3 out of every 5 speeding tickets has been written illegally or in error. Please read on.
The Law Of Radar Calibration
Every state here in the United States requires by law, every law enforcement agency be it local, city, state or federal, to either annually or semi-annually send out every police radar unit in that departments inventory to an independent laboratory for a complete inspection and certification. The purpose of this is quite obvious; we want to be sure that every piece of police radar being used be in proper working order so that mistakes are not made and speeding tickets not issued in error or unjustly. Ok, so how does all of this work and why does it matter?
First, we want an independent inspection performed which will assure the integrity of the inspection. We do not want the police to police themselves, which is why state law requires an independent laboratory conduct the inspections. All states require the yearly or semi-yearly inspections. Secondly the law requires that each and every law enforcement agency deliver to any laboratory that has been government certified to conduct these inspections, their departments police radar units. Thirdly, the law requires that every police radar unit in that departments inventory be sent out within that states yearly guidelines. The majority of law enforcement agencies all across the United States fail to confirm to these standards as required by law. This is why I feel that 3 out of every 5 speeding tickets has been issued either unjustly or in error of some kind.
I Conduct A Survey...
In the summer of the year 2003 I began to conduct a survey of various local, city and state law enforcement agencies all across the United States. I interviewed either on the telephone or in person a department member of each of these law enforcement agencies, which totaled over 150 departments. The survey took months and months to complete but nonetheless it was finished late in 2004. The focus of this survey was quite simple actually; I was looking to find the answers to two questions in two subject areas. The first question revolved around finding out how many police radar units any given department had, followed up with did each and every radar unit get sent out for inspection as required by that states law. The second question was a follow-up question based on the answer to the first about the number of units any given department had in its inventory. What I attempted to elicit from the department official I interviewed was if that department sent an officer to court with calibration and inspection paperwork from a police radar unit that they knew not to be from the unit the police officer was operating at the time the speeding ticket he was going to court for was issued. The answers to these questions in these subject areas were just startling and left me in complete disbelief.
The Survey Says...
Out of the over 150 different local, city and state law enforcement agencies that I interviewed, I learned that 127 or the majority of these agencies had in their departments inventory police radar units that were routinely being used yet had not been sent out within the mandated annual or semi-annual inspection period. Further, 107 of these law enforcement agencies admitted that their officers went to court with calibration and inspection paperwork from a police radar unit that may have been different from the one they were operating when the speeding ticket they are now appearing in court on was issued. Many times I was told, the officers were not aware of what I called the "bait & switch" of the calibration and inspection paperwork. These officers would go into court and testify under oath that the paperwork they brought with them that day into court was in fact from the actual police radar unit they were using when they issued the speeding ticket that was the subject of the court case they were now testifying about. Let me explain how and what this information means to all of you who receive a speeding ticket and plan to fight back in court. This piece of information alone could be the one thing that makes your case and breaks the states case against you.
The easiest way to sum up what I learned from this independent survey was to just use my own police department as an example. Many of you are well aware that I am a retired police officer from the State of Connecticut with over 14 years of loyal and faithful service. I was forced to retire in 1996 due to a line of duty injury, which caused me a permanent disability. My own department had about 6 radar units in our inventory. We would send out 1 or 2 of those 6 radar units to be inspected and certified by an independent laboratory each and every year as required by Connecticut Law, yet we would use all 6 of those radar units all the time. Many of our radar units had not been sent out for inspection in years. If and when we had to appear in court on a speeding ticket matter, my department provided to me paperwork from whatever radar unit had been sent out for calibration and certification that year, even though it may have not been the unit I was using when I stopped the motorist for speeding who was now appealing his ticket in court. Oftentimes I knew I had paperwork from a different unit and other times I did not. As is the case in most states, it takes months and months for a speeding ticket matter to be brought up in court for trial and by that time many officers forget which piece of police radar they were using when they made that traffic stop and issued the speeding ticket. It is this reason most officers are unaware they are going to court with paperwork that may not necessarily be from the unit they were using many months ago. So just using my own department for example, if we only calibrated 2 out of the 6 police radar units in our inventory each and every year as required by law, then every speeding ticket issued with those 4 police radar units that were never sent out for inspection and certification were issued either illegally or unjustly, thus bringing me back to why I believe that 3 out of 5 speeding tickets issued every day in the United States was issued unlawfully. This "bait & switch" practice did not just occur in my own department, based on the survey I conducted it appears as though it takes places in the majority of law enforcement agencies all across the United States and most likely everyday.
How This Helps You Beat Your Ticket
Ok, so now we know the truth, that the majority of law enforcement agencies are unlawfully using police radar every day. What does this mean to you, the motorist or to you, the operator who has received a speeding ticket and wants to fight back? It means that you are know armed with true insider information that you can use to help you beat a speeding ticket that was issued with police radar.
Many of us have long suspected that the police do not play fair or by the rules, and the results of my survey clearly point this fact out. Let me tell you how we use this "bait & switch" against those law enforcement agencies who don't play fair or within the scope of the law. If you find yourself on the receiving end of a speeding ticket where police radar was used, the most important piece of information you need to obtain with your discovery request is a list of all models, makes and serial numbers of each and every police radar unit the arresting department has in its inventory along with the calibration and certification paperwork from each unit. You may be met with some resistance but you must be determined to obtain this important list. Seek the assistance of the trial court if you are having difficulty with the arresting law enforcement agency. The obvious reason you want this list is to check and be sure that this department has calibration and certification paperwork for each and every radar unit they have in the inventory. If you discover they have 20 pieces of police radar and only have calibration and certification paperwork for say 15 of those units, that means 5 of their radar units may or are being used in violation of state law guidelines. You want to bring this to the attention of the court. The point you want to make is to get the court to believe this law enforcement agency may have used a radar unit to stop and ticket you that had not been sent out for calibration and certification. You want the court to suspect the department may have used one of those 5 units unlawfully. This creates reasonable doubt in your case and you could easily win a complete dismissal of your speeding ticket.
As I have explained to you in my other three articles as well as in my book entitled "An Educated Guide to Speeding Tickets - How to Beat & Avoid Them!", if you are unfortunate to find yourself on the receiving end of a speeding ticket you must remember to remain calm, be polite to the officer, cooperate without admitting any guilt, and do not be afraid to use a good excuse or ask for a written or oral warning from the officer. And always appeal each and every speeding ticket because the odds are in your favor if you fight back and go to court. Over 50% of those who appeal their speeding ticket win in some fashion, be it a compete dismissal or at least a reduction in either the fine or points on their driving record.
For those of you who received a speeding ticket and police radar was used, you must follow my advice and first, appeal your ticket in court, and then request all calibration and certification records from each and every piece of police radar the arresting department has in its inventory. If you follow my advice as discussed in this article, you should be able to raise doubt if you have uncovered a department has not conformed to the calibration and certification laws in your state. You should also follow all of the tips, tactics and strategies I talk about In my book the "Educated Guide to Speeding Tickets." You should do your homework and prepare for your day in court. Feel free to contact me if you have any questions or need advice. You can contact me via my website or telephone number as found in the "Educated Guide to Speeding Tickets" book again which is available for purchase right here.
I hope you found this article both revealing and easy to understand. Thank you for taking the time and interest in the reading of my articles. May God bless us all and keep us safe upon the highways and byways.
Richard Wallace II is a former police officer and author of the book An Educated Guide to Speeding Tickets - How to Beat & Avoid Them! To read more articles from this series, or to find out more about speeding tickets or radar detectors, visit http://www.BuyRadarDetectors.com.

Radar Detector Reviews - Some Useful Information

As the debate on whether radar detectors should be made illegal or not rages on, the fact is that radar detectors are needed, and so, they sell.
Who buys radar detectors?
Although most people would immediately say "people who speed", speeding is not the only reason given for buying a radar detector. People also buy radar detectors to protect themselves against radar gun error. The fact is that radar guns are fallible; this has been proven time and time again. So, by having a detector alerting you to the presence of a radar gun, you become aware of exactly what speed you're really doing. And that can be valuable if the gun misreads.
How does a radar detector work?
Depending upon its design and quality, a radar detector can alert you to devices being aimed at your vehicle to calculate speed. This includes:
Scanning the approved-for-use frequencies (X, K, Ka, and, in Europe, Ku) used by police radar guns. Presence of LIDAR (light detection and ranging) aimed at your license plate, headlights, or fog lamps. Because radar is more frequently used than LIDAR, while most good-quality detectors will alert you to radar signals in time to slow down, only higher-end detectors come with laser detection. Even then, they detect the laser about the same time it detects you-and at that point, slowing down isn't an option.
So why bother with laser detection at all?
On its own, LIDAR detection isn't enough to prevent you from being clocked by laser if you're speeding. However, by having a radar detector that alerts you to laser presence, you become open to a few options. Add on products like anti-laser license plate covers and anti-reflective coating for headlights can be used to reduce the effective range of a laser gun and give you a few extra seconds to slow down. For the serious-minded, there are also laser jamming and laser shifting devices available to block laser signals before they hit your car.
What are the best radar detectors?
Features to look for include advanced radar detection, 360-degree laser protection, auto-scan for eliminating false alarms, and stealth to render your detector invisible to police radar detector detectors.
The Radar Detector Test
Because no two radar detectors are created equal and no two drivers travel the same roads, there are a series of radar detector tests that can be performed to determine which is the right detector for you. This includes testing how well it detects radar and laser; how it performs long range, over hills, and in POP mode; and even how well it disguises itself from radar detector detectors.
While the debate as to the real reason why people buy radar detectors and even whether they should be made illegal continues, at least for today, radar detectors are out there and available for anyone who wants one. From basic models to self-learning ones; the radar detector is getting smarter by the day.
In our website, Escort Radar Detector Review we aim to review all Escort radar detector products. Each item is thoroughly analyzed using various criteria. Why Escort Radar Detectors? We believe they are the best and most popular type of radar detector, so we chose to focus on their products.
The best radar detector in our opinion is the Escort Passport 9500ix. Not only it does well on all categories, but it is also affordable so it won't cut a hole through your pocket. Highly recommended!
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Radar Detectors: What Features Do You Need?

When you've decided to invest in a new radar detector, either for the daily commute or just day-to-day errands, buying a radar detector can seem a bit daunting. There's a whole host of scientific breakthrough specs and technical industry jargon to weed through. Do you need a laser detector or a radar detector? What sort of bandwidth should you look for? Visual or audio alerts? Vg2 shielding mechanisms? Mounted or concealed? More than likely, you are just the average consumer, looking for an effective and reliable radar detecting unit to alert yourself to your own speed, as well as who and where you are being monitored for it. After having done a lot of research on the subject for my own interests, I have broken down all the tech specs and necessary features here, to save you the trouble of both unearthing unnecessary consumer headache, as well as buying the wrong radar detector for your individual travels.
· First off, there are basically three types of radar detectors as far as form is concerned: corded, cordless, and remote mount; each with its own set of pros vs. cons depending on your needs and lifestyle. The corded typically mounts to your windshield, and because of its location offers an aerial less-obstructed detection. Cordless is just that, and offers portable convenience. Lastly, the remote mount variety of radar detectors are mounted permanently to your vehicle, hidden from sight.
· What is the difference in laser vs. radar detection? Though radar detection has long been the chosen method of both drivers and traffic patrol, laser radar detection technology has been adopted by the latter. Police patrol will use laser radar for more accurate detection of closer-range vehicles, and standard radar detection for longer distance detection. Though it is more expensive to find a detection unit with both, it lessens your chance of being ill-prepared on the road. Moreover, you should only buy a laser radar model with 360 degree laser detection; otherwise you will only have the unit detecting in one direction, not from every angle of the vehicle, as is needed.
· City modes? They are basically, the blanket term for precise radar and laser detection in heavy radar frequency zones. The city mode will turn down the range of detection on your unit and perceive less interference or false alerts from external electrical mechanisms as well as other radar detectors in your immediate area. There's much more of this technical buzz in the city...hence the term. So, if you live or drive in more metropolitan areas vs. rural ones, this would be a good choice for you.
· VG2, Spectre, and Invisible shielding technology. The VG2 alert is the basic technology that allows you to know when the police in your vehicle's vicinity are using radar detector detectors or VG2 systems, to discern whether you are using a radar detector or not. Police officials adopted the Spectre system for detecting radar detectors on a broader and more precise playing field, and so the Spectre alert on your new radar detector will let you know when it is in fact being used. This allows you time to shut off your own radar detector, when alerted. The Invisible technology you may want to look for in a higher-end radar detector will be virtually undetectable to the above mentioned police-controlled devices, so you will never have to worry about shutting it down. All of these mechanisms are fairly new and will add expense to your radar detector, but again, it depends on how effective and reliable you need the radar detector to be.
· Bandwidths. Really, the only bandwidth you should have in your radar detector is the X bandwidth. Most frequencies operate on the X, and to incorporate any of the others (K, Ka, Ku), will just be asking for interference from unrelated mechanisms and external electrical stimuli. The result: less focus on what radar detection you should be picking up, such as police radar.
These are the basic necessary components in any reliable and accurate radar detector. You will find many more features available in these systems, but they are cosmetic in relation to the significant ones listed here. Start with these terms/tips for form and function, and then move on to whether you'd like luxury components such as voice alerts and enhanced LED displays.
Alexis Gibrault has written a number of articles on the hi-tech industry and it's many products and innovations. For more information on radar detectors and examples of, click here: Radar Detectors.
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Radar Guns: How Do They Work?

We've all heard of the evolving technologies that police patrol use to determine a vehicle's speed on highways, secondary roads, and downtown congested byways... Basically, anywhere you drive, you are subject to the laws' supervision and enforcement of speed limits in the name of common safety. But how does patrol effectively and accurately determine the speed of your car? Radar guns... The point and shoot technology of these trusty devices becomes more and more foolproof every day; so that if you're speeding in a monitored zone, you will be caught. In this article, we'll discuss what sort of mechanisms make the radar guns' results practically indisputable in a court of law, and what steps you can take to avoid being whacked with a hefty fine and/or arbitration.
The basics of radar gun technology is this: radio waves are transmitted from the radar gun to the speeding object, and then reflected back to the radar gun on a different frequency (in mph). Most radar guns automatically go through this process a number of times for one point and click...to ensure precision and accuracy. Beyond this definition, there are also two types of speed gun detection on the roads: radar and laser gun technology. Whereas radar guns pick up the converted frequency of your moving speed, laser guns use the time the light pulsing beams take to get back to its source, to evaluate your speed. So which one is more effective, and what sort of patrol uses which? Radar gun accuracy is dependent on the source being in transit, so you will find that state highway police use radar. And the converse is true: laser guns are used in the city, as the laser's accuracy is dependent upon a non-moving source. Laser guns are able to pinpoint single vehicles, whereas a radar gun has more room for error in hitting the vehicle in front or behind you. In short, laser guns are better for shorter range detection, and radar guns are better for wider range detection.
Typically, a radar gun's accuracy is +/-1 mph at +/-2 degrees angle behind or in front of the moving object. The more obtuse the angle, the less accurate the reading becomes. So, if you are being radared from an officer from the side of the road as you pass him/her, your chances for disputing the ticket due to improper technique are very good. That's why when you pass an officer, he/she will get behind you for awhile before flashing the blues, to get a better angle in relation to your vehicle, and to therefore better their chances of an accurate speeding readout. Most radar guns have an approximate range of 6mph to 200mph...anything below or above this, the device cannot handle. Luckily for patrol, most of our vehicles will stay safely within this range. Police also sometimes have a continuous mode radar or laser gun, which will automatically take readings of moving targets without the patrol having to point and click every time.
Of course, as is true of most technology, there is still a window of opportunity for error. In this case, inaccuracy might arise mostly due to improper use. If you are the patrol, it is imperative to turn down the sensitivity of the radar in certain congested zones to avoid interference; make sure not to angle the radar gun unless in a stationary mode, and also be aware of general external interference, such as surrounding topography and other radar-transmitted devices. If you are the target of one of these devices, you should be aware of these influences, as a possible misdiagnosis of your speed.
So if you are a civilian, how can you combat radar and laser gun detection? Most would answer radar detectors. Radar detectors will pick up most radar guns' frequencies. In all cases, if you decide to invest in a radar detector, do not skimp or opt for a lesser version to save a couple bucks. The higher end radar detectors will give you better range which will alert you sooner to a patrol's presence and give you more time to slow down. They also have features like 360 range detection, so you will be able to pick up radar presence from every angle. Moreover, more and more patrol are using laser detection guns to register traffic speed, and as the light beam transmitted is only 1.5 feet wide, it is much harder for your device to pick up it's use; so if you can afford to have a laser radar detector, I would strongly recommend it.
Alexis Gibrault has written a number of articles on the hi-tech industry and it's many products and innovations. For more information on radar guns and examples of, click here: Radar Guns.
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Radar, Laser, Police Detectors - What Is It, What To Look For, And How To Buy Quality Radar Detector

What is it?

To first of all answer your question, radar, laser, and other police frequency detectors are not illegal outside of Virginia and the District of Columbia (D.C.) Radar detectors are only illegal in commercial vehicles or passenger transport vehicles. Basically if you drive anything bigger than a standard pickup truck, you should not use a radar or laser detector in your vehicle.
You could probably imagine why anyone would want a radar detector. It's primarily for all of you speeders out there who would like to avoid a fat traffic ticket. Even if you're not an excessive speeder, you may even find laser or radar detectors to be useful. There are some areas where police or highway patrol officers are more tolerant of minor speeding, yet there are also those areas where they seem to pull over anyone going 1 mile per hour over the speed limit. If you drive in Los Angeles, 10 to even about 20 miles above the posted speed limit signs may be tolerated as long as it's with the flow of traffic, however, going 80 in a 65 MPH zone in the middle of Utah may not be so tolerated by the highway patrol. Whether or not you're an intentional speeder or a faster-than-most type of driver, a radar or laser detector could save you hundreds if not thousands of dollars.
Another much less-popular usage for a radar detector is for the detection of emergency vehicles. This helps a lot if you're listening to loud music in your car and can't hear audible sirens outside. Some Cobra radar detectors are capable of detecting emergency vehicles approaching your location so that you may safely move aside for them.
Let's go over some of the most important features that you'll want to look for in an effective radar detector.
Radar Detectors Features:
First, figure out how much you want to spend. You're more likely to find high quality brands and products within the $120 to $200 price range. Cobra radar detectors are some of the best quality ones you'll find in this price range, as well as Beltronics detectors in the lower end of the price range.
Next, find the most comprehensive detection available in each of the products. Simple radar detectors will not detect laser or the most high-tech police speed readers out there. Police speed readers have progressed as fast, if not faster than the commercial radar detectors. Laser detection was developed after radar for much more accurate and longer range detection; and they have also implement KU-band hard-to-detect radar speed gun. In addition, the police have also used VG-2 radar detector-detectors to find suspected speeders.
Scary huh? Well don't worry because Cobra digital radar and laser detectors have you covered. Cobra detectors are capable of reading simultaneous signals with multiple channel detectors. This means that if there are more than one cop out there, some Cobra laser/radar detectors could track up to 12 signals. It could detect radar, laser, and even KU-band signals with Spectre or VG-2 detector-detector coverage. Some Cobra radar detectors also have voice alert feature that announces the detection of nearby signals. Most units, even Beltronics radar detectors, also feature a city/highway mode switch that reduces the amount of false signals that could be detected or triggered from other wireless radio transmissions such as wireless internet, handheld devices, etc.
There are also bells-and-whistles features in some of the more expensive models. For instance, the higher-end cobra radar detectors feature battery voltage meter and an 8-point compass that indicates where the detected signal is coming from. My best advice to you is to find a radar detector that functions effectively with all detection and "stealth" coverage with as little bells-and-whistles as possible to reduce the price. Don't just settle for the cheapest radar detector because they're likely to fail you and more likely to waste your money... not to mention a hefty traffic ticket! I suggest looking for Cobra radar detectors or BEL radar detectors as they seem to have more effective features than most generic brands.
Info: For more information about radar detectors, please visit: Cobra Radar Detectors
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The Reason Why Reading Radar Detector Reviews is Important If You Consider Buying One

Since the very first radar gun and the very first radar detector have been invented, an arms race of sorts has began. Wielders of the radar gun, members of the police force, attempt to catch drivers who drive over the speed limit. On the other side, the average Joe, owner of a radar detector, does not wish to be caught speeding nor does he wish to be falsely blamed for speeding because of a faulty gun.
This arms race causes manufacturers of radar guns to find way of overcoming the ability of radar detectors' ability to detect them, and vice versa: manufacturers of radar detectors find ways of outsmarting radar guns - and even jamming their signal altogether.
Consequently, new models are occasionally released that are specifically aimed to deal with the new features of the 'nemesis' (for lack of a better word). Just like an old radar gun is almost certainly going to be useless against modern radar detectors, an old radar detector will not be effective against modern police guns.
The 'arms race' from a technical perspective
Radar detectors detect EM emissions from radar guns and trigger an alarm to the driver that a radar detector is used in the area. In order to outsmart radar detectors, radar guns change frequencies to those that radar guns are insensitive to and so, are effectively blind to them. However, once detector manufacturers figure this out, they enable their devices to be sensitive to these frequencies as well.
Furthermore, some devices passively absorb the radar signal, and consequently, render the car invisible to the radar gun. Note that this can look suspicious to a police officer with a radar gun.

New radar guns use laser light (called LIDAR) instead of EM emissions. Older radar detectors would be completely ineffective against this type of radar gun. However, radar detector manufacturers have a way to circumvent that as well.
In addition, technology has been improving in other ways. By incorporating GPS technology into radar detectors (as some model do, for example, the Escort Passport 9500ci) radar detectors do not always have to detect the presence of radar guns - all they need to do is connect to a database of people who have reported the presence of radar guns in certain locations, and simply drive slowly in these regions. This is an impressive feat, though personally I believe the other side is already working on a way of circumventing that as well - perhaps by creating numerous false alerts in order to make this database useless? We shall have to wait and see.
From an academic perspective, it is an interesting topic to follow. However, in practice, if you want to use a radar detector, you must be sure it can deal with modern radar guns, otherwise, you may be setting yourself up for a very unpleasant surprise as you might find yourself overconfident because of your radar detector device.
In conclusion: only by reading up-to-date reviews of radar detectors you can be certain that you pick the best radar detector for your needs, and that it will be effective in this day and age. One last point: it goes without saying that before buying a radar detector, you need to make sure that using and owning a radar detector is legal in your state and country.
In my website, Escort Radar Detector Review, I thoroughly analyze a variety of a radar detectors and radar jammes using several criteria (specifically, Price, Bands, False Alerts, Features, GPS capability and Detectability), and offer for each a radar detector review. In addition, I provide useful and helpful articles, including this one, The Reason Why Reading Radar Detector Reviews Is Important If You Consider Buying One.
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