DIY radar detector repair

In detail: do-it-yourself repair of a radar detector from a real master for the site my.housecope.com.

ANTI-RADAR SCHEME

Probably every driver at least once had the idea to acquire a radar detector, especially after another racket of a traffic policeman on the road. So get down to business! But let's clarify right away: a radar detector is a device that suppresses police radar, and its assembly is a very difficult task. Here we will consider a simpler anti-radar scheme - the so-called radar - a detector that signals that an inspector is scanning your car.

To measure the speed of a car, the traffic police radar receives radiation reflected from the car, and the radar detector - direct, therefore the radar detector is always able to detect the radar earlier than it measures the speed of the car! So, if a traffic cop scans from his radar 500 m from the car, this is the range of the Vizir device, then before the car approaches a visible distance of 100 m you have the opportunity to slow down.

This anti-radar scheme is quite common on the network, and although I personally did not assemble it, I had to repair such a homemade device. There, a microwave diode - the detector stood in a small funnel made of tin and the whole structure fit into a body soldered from foil PCB, the size of a pack of cigarettes. Under microwave irradiation, it blinked and peaked. Here is another version of the anti-radar circuit from the Radio magazine:

All radars in service with the traffic police operate at frequencies of 10525 MHz, 24150 MHz and 34700 MHz. These radar detectors are capable of detecting all of them.

Setting up the anti-radar circuit can be done while standing close to the person with the radar;

Or so as not to light up, near the stationary radar - camera:

Video (click to play).

Sometimes they are placed a couple of kilometers in front of the traffic police post:

Recently, the authorities have adopted: The VIZIR radar video recording speed meter consists of two independent units - a speed meter and a digital photo and video camera. The camera turns on both automatically when the driving car exceeds the preset speed limit, and manually - by an auto inspector. Surveillance cameras with built-in radar. The device works constantly, and when the speed is exceeded, the sensor is activated, which activates the camera.

The market also offers radar detectors. This device is not prohibited: nowhere in the law is it written that you cannot use radar detectors. Here are some examples of branded foreign products:

Cobra XRS-9445 Radar Detector. Price: $ 109.99

Cobra XRS-R9G with GPS Speed & Red Light Camera Detector. Price: $ 229.98

Cobra XRS-9970G Radar Detector. Our Price: $ 319.99

Questions about radar circuitry? FORUM

The largest companies producing radar detectors offer devices in three price categories, and in some cases, prices in relation to the declared characteristics are not comparable. Affected by the influence of the brand, the popularity of the company, the materials used and the introduction of the latest technologies.

How do radar detectors work? The following requirements are imposed on radar detectors:

The detection range of a signal by a radar detector is one of the most important characteristics of the device, since the amount of time to make a decision depends on it. In the "city" mode, the detection distance of the radar radiation fluctuates within 700-850 meters, outside the city the distance can reach 3 km.

Working range of waves - the wider the range of waves received by the device, the more models of DPS radars it can take direction finding. Today, without fail, radar detectors must operate at the following frequencies:

X-band (10.525 GHz) - obsolete frequency, models on it are not produced, but still found on the roads.
K-band (24.15 GHz) - this frequency is used in most radars in service with the traffic police.
Ultra X - short pulse range, introduced since 2002, used in modern Sokol radars.
Ultra K - the K range of short pulse frequencies, introduced since 2004, is used in Iskra and Berkut radars, as well as in video recorders.
VG-2 - radar detector blocker when detecting direction finding equipment from traffic police officers.
POP TM is the frequency range of radars used in the USA.

Most modern models have a multiband matrix for determining the incoming signals.

One more antiradar characteristic - the ratio of false signals to real ones. It is known that the radar detector takes only part of the signals, in each specific situation there are conditions for false alarms (electric door locks with photocells, high-frequency emitters, terrain features, radar impulse).

Important characteristic radar detectora is the processing time of the incoming signal. Modern models of radars in service with the traffic police operate in a pulsed mode, with a short period of the emitted signal, operational reception and its processing increase the efficiency of the radar detector.

Reliability of the result - in addition to the coefficient of false signals, an important role is played by the reliability of the data, the correspondence of the received data on the distance to the radar.

Appliance functionality - Premium models are equipped with additional features to make the appliance easier to use. For example, a local oscillator built into the anti-radar circuit has a blocking system in the presence of a DPS radar. Local oscillator sensor without phonit protection with amplification of the signal from the radar.

Reliability - the radar detector is used in a dynamic mode, since it is rather rigidly fixed on the front window of the car (the rubber suction cup weakly dampens shock loads), therefore, all potholes and irregularities in the road turn into vibration. Continuous exposure to vibration when the instrument is poorly executed can result in poor readings.

In addition to the listed characteristics, radar detectors can take direction finding of laser signals, however, the determination of laser exposure does not have accurate statistical data due to the specifics of the application of such radars.

Radar detectors are manufactured in a monolithic case, so most breakdowns can only be repaired at a service center. Among the frequent breakdowns - the radar detector constantly beeps, the radar detector does not work, the radar detector does not catch. Some of these faults may not be such. If your anti-radar does not catch any one type of radar, it may turn out that it is simply not capable of this constructively. There is also an uninterrupted supply of signals in the city, but, as a rule, this is not a defect, since the device must be switched to the “city” mode. Any repair of radar detectors is best done in a service center or at authorized dealers, if the warranty is valid. Self-repair can finally "finish off" your radar detector.

Currently, devices such as radar detectors are gaining more and more popularity among our compatriots. Such devices are designed to fix cameras, as well as police radars, which are used to determine the speed of a car and warn the driver about their presence. Like any other gadget, the detector can fail over time. In what cases it is necessary to repair radar detectors and what malfunctions are typical for such devices - we will talk about this below.

How to check such a device at home?

If we are talking about diagnostics of functionality, then the gadget is checked in the car, the diagnostic procedure is as follows:

What malfunctions are most often manifested in the operation of detectors:

As for the repair, it is far from always possible to do it yourself. If you have the appropriate knowledge and skills, you can try to repair the detector yourself.

How can you restore the device to work:

Is your TV, radio, mobile phone or kettle broken? And you want to create a new topic about this in this forum?

First of all, think about this: imagine that your father / son / brother has an appendicitis pain and you know from the symptoms that it is just appendicitis, but there is no experience of cutting it out, as well as the tool. And you turn on your computer, access the Internet on a medical site with the question: "Help to cut out appendicitis." Do you understand the absurdity of the whole situation? Even if they answer you, it is worth considering factors such as the patient's diabetes, allergies to anesthesia and other medical nuances. I think no one does this in real life and will risk trusting the life of their loved ones with advice from the Internet.

The same is in the repair of radio equipment, although of course these are all the material benefits of modern civilization and in case of unsuccessful repairs, you can always buy a new LCD TV, cell phone, iPAD or computer. And for the repair of such equipment, at least it is necessary to have the appropriate measuring (oscilloscope, multimeter, generator, etc.) and soldering equipment (hairdryer, SMD-hot tweezers, etc.), a schematic diagram, not to mention the necessary knowledge and repair experience.

Let's consider the situation if you are a beginner / advanced radio amateur who solders all sorts of electronic gizmos and has some of the necessary tools. You create an appropriate thread on the repair forum with a short description of “patient symptoms”, ie. for example “Samsung LE40R81B TV does not turn on”. So what? Yes, there can be a lot of reasons for not switching on - from malfunctions in the power system, problems with the processor or flashing firmware in the EEPROM memory.
More advanced users can find the blackened element on the board and attach a photo to the post. However, keep in mind that you replace this radio element with the same one - it is not a fact that your equipment will work. As a rule, something caused the combustion of this element and it could “pull” a couple of other elements along with it, not to mention the fact that it is quite difficult for a non-professional to find a burned-out m / s. Plus, in modern equipment, SMD radio elements are almost universally used, soldering which with an ESPN-40 soldering iron or a Chinese 60-Watt soldering iron you risk overheating the board, peeling tracks, etc. The subsequent restoration of which will be very, very problematic.

The purpose of this post is not any PR of repair shops, but I want to convey to you that sometimes self-repair can be more expensive than taking it to a professional workshop. Although, of course, this is your money and what is better or more risky is up to you.

If you nevertheless decide that you are able to independently repair the radio equipment, then when creating a post, be sure to indicate the full name of the device, modification, year of manufacture, country of origin and other detailed information. If there is a diagram, then attach it to the post or give a link to the source. Write down how long the symptoms have been manifesting, whether there were surges in the supply voltage network, whether there was a repair before that, what was done, what was checked, voltage measurements, oscillograms, etc. From a photo of a motherboard, as a rule, there is little sense, from a photo of a motherboard taken on a mobile phone there is no sense at all. Telepaths live in other forums.
Before creating a post, be sure to use the search on the forum and on the Internet. Read the relevant topics in the subsections, perhaps your problem is typical and has already been discussed. Be sure to read the article Repair strategy

The format of your post should be as follows:

Topics with the title “Help fix the Sony TV” with the content “broken” and a couple of blurred photos of the unscrewed back cover, taken with the 7th iPhone, at night, with a resolution of 8000x6000 pixels are immediately deleted. The more information you post about the breakdown, the more chances you will get a competent answer. Understand that the forum is a system of gratuitous mutual assistance in solving problems and if you are dismissive of writing your post and do not follow the above tips, then the answers to it will be appropriate, if anyone wants to answer at all. Also keep in mind that no one should answer instantly or during, say, a day, no need to write after 2 hours “That no one can help”, etc. In this case, the topic will be deleted immediately.
You should make every effort to find a breakdown on your own before you get stumped and decide to go to the forum. If you outline the entire process of finding a breakdown in your topic, then the chance of getting help from a highly qualified specialist will be very great.

If you decide to take your broken equipment to the nearest workshop, but do not know where, then perhaps our online cartographic service will help you: workshops on the map (on the left, press all buttons except “Workshops”). You can leave and view user reviews for workshops.

For repairmen and workshops: you can add your services to the map. Find your object on the map from the satellite and click on it with the left mouse button. In the field “Object type:” do not forget to change to “Equipment repair”. Adding is absolutely free! All objects are checked and moderated. A discussion of the service is here.

and where does the VF trade wind?
only a turret machine gun can be placed there. a
Whistler 138 Ru is a radar detector, not a radar detector

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Moderator Sep 25 2012

Well, what about the irradiation you turned it down. Despite the fact that everywhere there are mobile networks, wi-fi and the like, your radar detector will not do anything wrong. It just might be a problem due to its illegal use. Install a radar detector)

and which model is more reasonable to choose?

about antiradar - it is a source of strong electromagnetic radiation .. is it pleasant to be irradiated yourself? well, for the time being it.
a couple of times you will drive .. then the facts will be compared. This time ..Well, and secondly, it is not a fact that this anti-radar will effectively drown out the entire frequency band, so it can be useless, especially since different radars work in different ranges - and everything must be muffled, it is necessary to carry a cart with an additional generator

I hear about it for the first time.

difference in terminology
a radar detector is essentially a special device that disables the radar. it's illegal everywhere.

thanks, now I will know. I'll think about it.

Cyril, where does infa come from?
for example, to normally mute the phone, you think the phone has enough power. you need many times more! And this is not taking into account that it is necessary to jam the entire potential band and not a couple of frequencies at which the signal is actually transmitted (!)

And where does the infa come from that the radar detector is harmful to health? If the rays are directed, then all the more there is nothing to be afraid of. Maybe you don't use a microwave either? There, too, the radiation is good

It's just that there is powerful radiation in the antiradar, that's all. If a person is irradiated like that, then nothing good will happen. But this is all theory

something in the news slipped the idea of the traffic police to ban these things.
who thinks about this?

Yes, this idea is not the first time jumping, but has not yet been banned. If they are banned, they will come up with something new.

And what can you think of new here?

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Don't drink while driving! 11 oct. 2012

And what can you think of new here?

But you never know what. Once upon a time, there were no anti-radars, and there were no detectors. Then they came up with it. Well, that's the same and something else will come up with. Progress.

As for me, all these anti-radars and radar detectors are illegal, or at least go against their conscience. It would be better for something to come up with a device so that drivers observe traffic rules

Why is it against your conscience? What's so terrible about that?

It is hard to imagine a car enthusiast who would not have heard anything about such a device as a radar detector, in the common people called antiradar... It helps to capture the radio signals emitted by radars, which are usually used by traffic police officers in order to identify violators of the speed limit on the road.

At the same time, many can say, they say, they heard something, but they just never thought to use this device, because the speed limits have never been violated and we are not going to violate.

But in fact, any experienced driver will say that there are situations when you really lose control over the speed of the car, and even if this is expressed even in a slight excess, this is enough to be fined or even deprived of a driver's license.

In this regard, antiradar it is recommended to purchase and install a car for everyone, at least as a reminder that the speed limit on the road must be observed. But if you plan to use this device, pay attention to two important nuances. First, your car should not have an athermal windshield. Such glasses are now in vogue, because they allow you to reflect the sun's rays and prevent the heating of the car interior, thanks to the silver oxide contained in their composition.

But the point is that such glass prevents radio signals from entering the car interior, i.e. the radar detector, in this case, becomes incapacitated and does not catch. That is why, if you are not sure which windshield is installed on your car, take a close look at it.

If you notice a metallic sheen on the outside, as well as in the protection area where the rear-view mirror is located, it means that you either have to abandon the purchase of an anti-radar device, or you will need to replace the windshield. However, you can choose a radar detector with a spaced-type installation. For example on some car models Peugeot an athermal windshield is installed through which very badly catches anti-radar.

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alexsarans_k 08/31/2013

Does anyone in Saransk repair radar detectors?

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alexsarans_k 08/31/2013

Radar detector stinger 430. Signal level indication scale from 1 to 9. When the radar was detected, it showed indication from 1 or from 2. Now only from 3. I started to catch worse, from a shorter distance. Check it out. Or tweak if you can.

Definitely leaving the local oscillator setting in the horn. In general, it is the three brands mentioned above that suffer from this. Bring it, I'll return it to him, but as I wrote, some parameters cannot be restored without a debugging stand, and it is not in Saransk. And if there was, the cost would not be appropriate for repair.

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alexsarans_k 08/31/2013

Question after inspection. Maybe I won't be able to restore it.

Heterodyne IMHO has nothing to do with it. The horn is mechanically damaged (fell off, fell apart, etc.), or the vibrator moved away from its place, either in the horn, or do not disappear on the board. Disassemble it yourself and see.

There will be a reception, but the sensitivity will decrease. The receiver in the radar, I think, is quite broadband, and when, when detuning the local oscillator, only the peak of the highest sensitivity shifts along the spectrum, I think it will still be captured by the receiver.

With such malfunctions, there will be no reception at all. For the listed brands, it is the local oscillator settings that float away.Repeatedly tested. Without a source with stable radiation both in frequency and impulse, it is impossible to understand in which direction the adjusting screw to turn.
I usually tune with my Spark.
There will be a reception, but the sensitivity will decrease. The receiver in the radar, I think, is quite broadband, and when, when detuning the local oscillator, only the peak of the highest sensitivity shifts along the spectrum, I think it will still be captured by the receiver. With that shit that stands in crunches, the local oscillator settings just go away from time to time. Have you ever seen what's inside them (I mean crunch / star / stinger)?

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On the roads of almost any country you can find a huge number of radars, and drivers do not always know in advance where they are. This is where an automotive radar detector comes in - a compact device that helps locate speed control equipment. How is it different from antiradar, how to choose, configure or update it?

It acts as a radio receiver for the police radar, which measures the speed of a moving vehicle. You will know in advance that you are near a section of the road where the driving speed is controlled. This not only saves money, but also improves road safety.

You need to understand the difference between a radar detector and a radar detector.

A radar detector is an exclusively passive radio signal receiver.It does not affect the received signal in any way, but only analyzes it. This makes it possible to determine what kind of monitoring equipment is used. Most modern detectors can work with different types of radars, display information on the screen, and emit sound and voice signals. The detector can be used in Russia and many other countries of the world - it is not prohibited by law.

Antiradar has a different principle of operation. He not only receives the signal, but also actively suppresses it! Having detected intense radiation of a certain frequency, the device goes into the "jamming" mode, distorting the signal with special noise. Thanks to this, the police radar cannot track the speed of the vehicle. Conveniently? Yes, but prohibited by law - at least in Russia. The reason is that this technique operates on frequencies that are prohibited from being occupied by individuals.
The punishment for using a radar detector can be very harsh - from confiscation of a device to a fairly large fine. Therefore, in our country, such equipment is usually not sold. There are almost always only passive receivers on sale, but sellers sometimes mistakenly call them "antiradars".

Attention! Before making a choice, you need to find out two points:

Does your car have an athermal windshield. Athermal glass is coated with silver oxide, due to which it begins to reflect the sun's rays. This is convenient because the interior does not get hot in hot weather, but the protective layer prevents radio signals from entering. This means that the radar detector will not be able to pick up the radiation from the monitoring devices. If you are not aware of the information about the windshield, inspect it - on the outside it will have a metallic sheen of purple, green, orange or another color. If it is still athermal, you will have to choose a radar detector with a spaced-apart installation type or look for an unprotected place next to the rear-view mirror.

Are there adaptive cruise control, blind spot sensors and other sources of strong radio signals in the car? If they are present and cannot be turned off, alas, you will have to do without a radar detector, since it will receive strong interference. There are only a few anti-jamming models available so far, and all are manufactured by Escort, the world leader in radar detectors. We are talking about the Escort Passport 9500ix INTL and the 8500ci Plus INTL variant.

The most important parameter. Determines which radar signal the technician will pick up. The choice depends on the area in which you most often move. For example, the X range is outdated and is no longer used in almost any other place except in the wildest places. But the K-band in the pulsed mode is widespread. There is also a low-power sub-band K-Pulse - it is used in the latest Strelka, Kordon and many others radars.

A separate class of monitoring devices is laser-type meters. They do not use a radio signal, but a laser beam with a certain wavelength. Such models are also often used in Russia, so it's good if your detector can pick them up.

The hardest thing is with the complexes "AvtoUragan", "Avtodoria" and "Odyssey". These are not radars in the usual sense, but cameras that are installed on different sections of the road. First, the car is registered on one, then on the other. Then the technique determines the time for which this section was covered, and from it finds out the driving speed. No standard detector can detect such a device, because it does not emit anything! However, there was also a right for them - modern options are equipped with a built-in database with camera coordinates. It is recommended to pay attention only to detectors that have a database.

The most common class. In our country, you can most often find inexpensive Russian and South Korean models. Their cost usually does not exceed 12,000 rubles. The producers of PlayMe, Neoline, Star Stinger, Supra, Street Storm, Sho-Me deserve trust.Some world famous brands also have budget lines - for example, Whistler and Cobra.

Popular models are Street Storm STR 9540EX and STR 9900EX GL, as well as PlayMe Forever.

Street Storm STR 9540EX. Advantages: Sees an arrow, it is inexpensive, there are many functions + GPS Disadvantages: No serious problems in 2 years Comment: The main advantage is that it works as it should: it does not freeze, does not get too hot, although the load is strong. ... In addition, there is an updated base of cameras and radars, it's cool that his memory is rubber, many times he has already entered his coordinates. The firmware is periodically updated, there is nothing to complain about. Also, the settings system is very convenient, you can configure the taa that will only yell at the arrow. The filter is good here.

Everything is more serious here. The cost varies from 12,000 to about 20,000 rubles. The best known manufacturers in this category are Street Storm, Cobra, Beltronics, Whistler and Escort. In Russia, Street Storms are the most popular, as they are inexpensive and perfectly pick up signals from most local radars.

Top models: STR 9350EX, 9750EX, 7010BT, Whistler PRO-99ST +. Mid-range radar detectors are a great choice for most situations.