Pocket radar gun: Pocket Radar Classic Model/Speed Radar for Industrial and Traffic Uses : Electronics

Pocket Radar Classic Model/Speed Radar for Industrial and Traffic Uses : Electronics

Having seen the NHL skills competition each year, our group was curious how our shots compared.

The unit comes in its’ own felt lines hard plastic case, which has proven durable.
It uses a pair of triple A batteries, and those have lasted more than a year, or sporadic use.

If the Red Radar button is pushed in conjunction with the smaller black Recall button, the mode can be changed.
Select between: Miles per Hour (mph), Kilometers per Hour (kph), Meters per second (mps) and Feet per Second (fps).
Advance the selection with the Red Button, and lock it in with the Black Button.

This works best if you’re lined up behind (or in front of) whatever you’re measuring.
You don’t want to be perpendicular (sideways to) your target, as it is in your field of view for a short period of time.

We found it worked best to kneel behind the player, about ten feet behind them.
Time the pressing of the Red Radar button, with a rapid press and release action, such that the middle of the pressure was at about the time that the stick made contact with the hockey ball.
With only a little trial and error, this became pretty easy.

Our group ranged from 30 mph to 90 mph, on the slapshot… and from 20 mph to 70 mph on the wrist shot.
We had a lot of fun with this, and a friend (the hard shot amongst our group) took this to his all-star game for the Fraser Valley ball hockey league to see what others had.

You can also use this for a constant speed, for example if you’re measuring how fast something is… such as a car, while you’re on the side of the road and it is approaching you.
Just press and hold the Red Radar button.
You can also test how fast the driver is going, while you’re in the car, by aiming at something which you’re approaching.

The Recall button will cycle through (ten or so) previous readings, and has a memory of previous readings from several months ago.

Once you’re done playing with it, the unit auto shuts off.

My roommate is heavily into radio control vehicles, including Airplanes, Boats, Cars and Helicopters.
After seeing us play with this, he immediately needed one for his group and their hobby.
He bought the unit off of me, on the spot.
And I liked it enough to purchase another one that evening.

5 Best Radar Guns – Nov. 2021

Shopping guide for best radar guns

If the first thing you think about when you hear the term “radar gun” is speeding tickets, think again. Police certainly use them regularly for traffic control and monitoring, but radar guns also have uses in areas that are a bit more fun.

Radar guns have the ability to measure the speed of various objects, not just cars. Athletes and coaches use radar guns to measure the speed of a thrown ball, a struck ball, a racket, or a club head. Measuring these speeds can help athletes figure out if they’re using proper technique. A loss in speed of a ball or club can provide an early indication of injury, too.

If you’re thinking about purchasing a radar gun, continue reading to learn more about these tools and how you can use one. We’ve included some of our favorite radar guns, too, if you’re ready to buy.

Key considerations

Technology

Radar guns are frequently used by police to measure vehicle speeds for traffic enforcement. Radar guns are also used in sports. There are two technologies used to measure speed: the Doppler effect and laser.

• Doppler effect: A radar gun that relies on the Doppler effect sends radio waves toward the target. The radio waves strike the target and bounce back to the radar gun, which measures the change in frequency of the sent and received waves. That change is the Doppler effect. The frequency change enables the radar gun’s software to determine the speed at which the target is traveling compared to the radar gun. All of this happens within a fraction of a second, making it appear instantaneous.

• Laser: Instead of radio waves, some radar guns use a laser light to measure speed. This type measures the time it takes for the light to reflect off the target and return to the radar gun. The police use laser radar guns to track traffic speeds. You won’t see these radar guns in use at baseball stadiums.

When measuring the speed of a baseball or softball pitch, the location of the measurement affects the reading. A ball is moving more slowly when it crosses home plate than when it leaves the pitcher’s hand.

STAFF

BestReviews

UsesWhile using radar guns to measure vehicle speeds is common, you’ll also find these tools used in sports. Radar guns are regularly used to measure the speed of pitches during a baseball or softball game. Statisticians measure the speed of the ball off the bat (exit speed velocity). Radar guns are also used to measure the speed of the puck in ice hockey or serves in tennis. Golfers use radar guns to measure ball speed or the speed of the swing of the club.

When selecting a radar gun, it is important to consider what you’ll be using it for so you find one that meets your needs. We consider a variety of options suited for baseball, softball, tennis, golf, motor sports, and more.

We consider any unique design and functionality features included in a radar gun, such as hands-free setup.

Some radar guns use radio waves to measure speed. Others use laser technology. When recommending radar guns, we research both types.

When researching and evaluating radar guns, we consider how intuitive and user-friendly they are.

To assess value, we consider the accessories a radar gun comes with and whether additional accessories or add-ons are available for purchase.

When researching radar guns for recommendation, we consider the number of features offered. Features such as memory and continuous speed readings can be very useful.

Basic radar guns cost anywhere from $100 to $200 and provide a reasonable level of accuracy. We evaluate a number of top models in this category.

Advanced radar guns between $1,000 and $2,000 provide highly accurate readings and are made with strong, durable materials. We research and compare many of these models to find the top performers.

Each radar gun has benefits and drawbacks. In our evaluation process, we consider any functionality limitations a model may have, such as topping out at certain speeds.

Some models are designed specifically for baseball and softball and provide unique readings, such as exit velocity and the speed of a ball at the point of release. We evaluate and compare many options in this category.

Radar gun features

Radar guns made for home use have some interesting designs and feature sets.

Design

A common radar gun design is a shape that resembles a handheld drill, with the trigger on the handle. The front of the radar gun has the radar mechanism, while the back has the display screen and control buttons.

Some newer radar guns look more like smartphones in shape and size. You hold this style of radar gun with the screen facing toward you and press a button to activate the radar. You can also attach this type of radar gun to a tripod to make it easier to use.

Controls

You activate a radar gun with a button or trigger. Many also provide a continuous mode in which the radar gun can be set up to work hands-free and automatically measure speed.

Some units offer a mode that displays only the maximum speed of the target during the testing period. Others store a range of speeds during the time of the test.

Radar gun prices

Radar guns are not cheap. While it might seem like fun to grab a radar gun to find out how fast your eight-year-old can throw a baseball, it’s going to cost you.

Basic

Even basic radar guns cost $100 to $200. They provide a reasonable level of accuracy to within a couple of miles per hour. These radar guns are easy to use, but they usually don’t offer much in the way of advanced features, such as memory to store readings.

Advanced

Advanced radar guns cost $200 to $500, but you can find some units that cost $1,000 to $2,000 or more. These expensive radar guns are very accurate to within one mile per hour, and usually less. They consist of high-quality, durable materials and can be used in any weather. These models may also fit on a tripod.

Did you know?

Radar guns used to measure traffic speed may work over a distance as short as 100 yards or as long as a mile.

STAFF

BestReviews

Tips

• Use a radar gun for baseball or softball. Pitchers want a measurement of the maximum speed of a pitched ball. Many radar guns made specifically for baseball and softball automatically display the top speed, and some units can measure both the speed of the ball at the point of release and the speed as it crosses the plate. Additionally, most baseball and softball radar guns can measure the throwing speed of fielders and the exit velocity of the ball off the bat.

• Use a radar gun for tennis. You can use a radar gun to measure the speed of a served ball, which is similar to measuring the speed of the ball out of a pitcher’s hand in baseball or softball. You can often use the same type of radar gun for both sports.

• Use a radar gun for golf or hockey. Measuring the speed of a golf club head or a hockey stick gives coaches data about the efficiency of a shot. Some of these radar guns sit on the ground, aimed at the point of impact. Having a radar gun that can store 25 to 50 readings is especially nice in this case because you don’t have to stop a practice session to write down each reading.

• Use a radar gun with motor sports. Look for a radar gun that continuously measures speed, which will tell you when the vehicle slows down unexpectedly. Or you might want a radar gun that only displays the top speed, such as for a straightaway or for drag racing. The gun must have a speed measurement range that can match your vehicle. Some radar guns top out at 150 miles per hour, while others measure up to 200 or 250 miles per hour.

FAQ

Q. Are police radar guns really all that accurate?

A. They are extremely accurate, usually to within one mile per hour (and often significantly better). However, to maintain that accuracy, they must be calibrated and tested on a regular basis. If you’re questioning the accuracy of a particular radar gun, verify that it has been calibrated recently. The calibration needs to follow the manufacturer’s recommendations.

Q. I notice baseball radar guns sometimes list the pitch speed to tenths of a mile per hour. Can they actually be that accurate?

A. The answer is yes, but it depends on the model. Most models you buy for use at home are only accurate to within one to three miles per hour. More expensive professional radar guns, such as those used by Major League Baseball teams, are accurate to 0.1 mile per hour.

Q. Where should I place the radar gun to measure speed?

A. For a radar gun using the Doppler effect, the gun must be pointed in the same direction the object is moving. This style of radar gun only measures the speed of an object moving toward the gun or away from it. Place the radar gun in front of or behind the object being measured.

Q. Does precipitation affect a radar gun’s performance?

A. No. Radar guns continue to work accurately even in rain or snow. However, you will want to be sure the radar gun is weatherproof and waterproof before you use it in poor weather.

Pocket Radar Guns SALE Pocket Radar Radar Gun BUY Pocket Radar Speed Radar Gun Handheld Sport Radar Gun

Pocket Radar Radar Guns redefine the world of sports radar! The ultra-slim, compact Pocket Radar sport radar stands up to the accuracy and quality of police radar guns, but with a fraction of the cost and size. The Pocket Radar Gun fits right in your shirt pocket. Simply push the button of the Pocket Radar radar gun to obtain fast, accurate radar speed measurements of a moving car, baseball, runner, or anything else! The Pocket Radar Speed Gun runs on standard AAA batteries and can make thousands of speed measurements on a single set of batteries. With a velocity detection range from 7 to 375 miles per hour, the Pocket Radar velocity speed gun is great for athletes, racers and coaches looking to chart progress and hone performance. Pocket Radar Radar Guns are an incredible tool for anyone interested in how fast something is moving.

Read more about our Pocket Radar Sports Radar Guns…

The top radar brands can be found here! We are the biggest source on the Internet to buy radar gun brands like Pocket Radar and many more! We have a huge selection of traffic radar guns and sport radar guns from the best radar gun manufacturers. Get speed radars from us, and you’ll get more than just your purchase – you will also get our top-notch customer service. Every radar gun we sell is covered by our 100% guarantee of customer satisfaction. If you need help selecting the right handheld radar gun, just get in touch with our experienced product experts, who can help you pick the right handheld speed radar for you.

Introduction to Pocket Radar – Baseball Equipment Guide

If you are still new to baseball yet, you may probably have no idea about the Pocket Radar and its role to the sport.

The Pocket Radar is a radar gun or a speed gun, a device used to measure the speed of moving objects  – in this case, the speed of a pitched baseball.

A little history about the Pocket Radar: It was developed and manufactured by Pocket Radar Inc. which is based in Santa Rosa, California. The company’s founders were developers in wireless and communication technology who once worked for separate companies (which include Hewlett-Packard and Cisco Systems) before they met and eventually formed Pocket Radar together.

Pocket Radar utilizes microwave signal emission and detection methods, technologies which are similar in Doppler radar speed guns that law enforcement uses primarily to measure moving vehicles. Like many radar guns, the Pocket Radar is a hand-held device.

And because it is handy, the Pocket Radar is also widely used by athletes, trainers and coaches, as well as sports fans. It only fits in the palm of your hand, but it can measure speeds from 7 to 375 miles per hour (mph), with an accuracy of ±1 mph (±1.6 km/h). The Pocket radar can also measure feet per second or meters per second.

The Pocket Radar is a valuable tool in baseball especially during training. Using the Pocket Radar in measuring the pitching speed, it helps in improving pitching stats – to keep the hitters off-balance and to develop pitching arm strength and performance.

Pocket Radar aims to offer high performance at a reasonable price – radar units that will provide accurate and reliable readings without breaking the bank. Here are a couple of the most popular Pocket Radar models:

1) Ball Coach

The “Ball Coach” is one of the most popular Pocket Radar models out there. It is designed to be small (it just fits in the palm of an average male’s hand), lightweight (weighing just a few ounces) and user-friendly. And it’s also easy on the pocket as well. It runs by batteries instead of charging, so no worries about low battery issues caused by insufficient charging. Through this model, Pocket Radar wanted to change the way that coaches and trainers use the radar by making it work like a stopwatch. Because of its size, it can be easily put into your pocket, and it can be easily pulled out of it as well whenever you need it on the spot.

The “Ball Coach” has proven to be so accurate that you can compare its performance to that of the bigger, more expensive radar guns – both of them deliver similar results. Pocket Radar is so confident of this product that they even offer a full 30-day money-back guarantee.

2) “Smart Coach”

The “Smart Coach” is actually Pocket Radar’s first complete speed and video training tool that features an affordable price tag. By providing the most important and valuable data and metrics such as hitting exit velocity, pitch speed and serve speed, the “Smart Coach” enables coaches and trainers to work on, improve and optimize their techniques to get better results. It comes with a companion app to help you keep track on your progress.

Pocket Radar continues to design, develop, engineer and revolutionize speed tracking technology for a vast range of applications, but in a price that everyone can afford.

10 Best Radar Guns For Baseball In 2021 [Accuracy]

Whether you’re a coach or a parent looking for the best radar gun for baseball or softball, you’ll want a device that is both accurate and easy to use, and when it comes to playing baseball, having a good quality radar gun can really improve speed and technique.

The main purpose of a radar gun is to measure the speed of the ball and some of the best radar guns on the market will record down the results so you can keep an accurate overview of a player’s performance.

In this article, we’ll cover everything you need to know about radar guns – from the best on the market to what features and qualities to look out for before you make your purchase.

Summary: Our Top 10 Picks for the Best Baseball Radar Guns

10 of the Best Radar Guns for Pitching in 2021

So, when it comes to finding the best baseball radar gun, you’ll want one that fits all your requirements. Do you need it to be hands-free? Are you looking for the best radar gun for youth athletes or older baseball players?

Other factors include the design of the radar gun, how accurate it is, and the brands – we’ve included popular choices below such as Bushnell Velocity Radar Gun, Stalker Sport Radar Gun, and the Radar Ball Coach.

Bushnell Velocity Radar Gun

TOP PICK

First up is the Bushnell Velocity Radar gun, which features a large, easy-to-read display that can measure the speed of 10-110 MPH up to 90 feet distance, and can be set to show speed in KPH as well as MPH. The Bushnell Velocity Radar is ideal for little league or high school athletes.

Additionally, the Bushnell Velocity speed gun is simple to use with a trigger-style design and uses alkaline C batteries to operate, plus the size means it’s easy to carry around or take to different locations.

An affordably priced radar gun

Easy point and shoot design

Suitable for a range of athletes

The radar gun isn’t always accurate in readings

Pocket Radar Ball Coach

The next in our line-up is the Pocket Radar Ball Coach. It’s easy to use and features a clear display. This speed gun includes hands-free, automatic triggering, built-in memory, and constant-on mode, everything you need.

In addition, the Radar Ball Coach has a speed range of 25 – 130 MPH, and a range of 120 feet when it comes to tracking a baseball. The accuracy of the speed gun is between +/- 1 mph and the small size means it can easily be transported around and is lightweight to hold and use.

Radar Ball Coach has a high-speed range

Various settings including continuous mode

No Bluetooth option for transfer data

Stalker Sport 2 Radar Gun

BEST RATED

The Stalker Sport is one of the best radar guns on the market thanks to its easy to use design yet precise accuracy, so much so that it rivals much more expensive radar guns on the market.

Stalker Sport includes AA batteries (although they aren’t rechargeable) and parents and coaches can measure pitching and running speeds using the two-speed functions. In addition, a sturdy, solid carry case is included for easy transportation of the Stalker Sport speed gun.

Stalker Sport is officially used by MLB

Speed measure of 5-150 MPH

Instructions are not very clear

Bushnell 101911 Velocity Speed Gun, 10-110 mph

The Bushnell velocity speed gun for pitching uses the traditional point and shoot pistol style with a comfortable grip on the handle, whilst the LCD display is large and easy to read. With a speed range of 10-110 MPH, it’s one of the best choices for all baseball athletes as well as other ball sports.

The Bushnell Speedster requires 1 C batteries and can measure speed from 90 feet away, making it easy to track athletes and keep a record of their progress. In addition, this speed gun uses DSP (digital signal processing) for accurate results.

Large screen display speed radar gun

Bushnell Velocity supports both KPH and MPH

Measures speed from 90 ft away

Some users find it detects slower speeds better than fast speed

Sports Sensors Glove Radar Gun

These sensors swing radar gloves attach to the back of a baseball glove and record the speed of the incoming ball, which means that there isn’t a need for a long-range capability making it the best radar gun for distance and positioning.

Designed to reduce the chances of arm strain, this radar gun for pitching can help improve consistency and in addition, can process a speed range of 12-120 MPH and uses a 3-volt lithium camera battery. Finally, this radar gun is made from extremely durable, weather-resistant materials so you can use it in any type of weather.

Works to improve speed and technique

Weather-resistant and durable design

Ideal speed radar gun for hands-free readings

Not as consistent as stand-alone speed radar guns

Jugs Gun Sports Radar

Featuring a continuous mode for non-stop results, this speed gun featuring Digital Signal Processing technology which provides accurate readings and has a speed range of 5 -140 MPH – ideal for baseball players of all ages and abilities.

This pitching speed gun operates using rechargeable batteries, and six batteries will last a week of regular, standard usage. In addition, the Jugs Gun features two modes – trigger and continuous mode and can measure in both MPH and KPH.

Accuracy index of +0.5 MPH

Can measure velocity speed in both KPH and MPH

Results can be transferred to PC using the data port

Speed radar gun uses rechargeable batteries

Pricey – but high quality

Bushnell Speedster III Radar Gun

The Bushnell Speedster III radar guns are designed to be comfortable and easy to use thanks to a textured pistol grip and easy to read fast speed display. Whether you’re a parent or coach, the continuous mode on the Speedster III speed gun will make it easy to collect readings and can pick up ranges from 10-200 MPH.

Requiring 2 C batteries, these speed radar guns accurately measure velocity speed per hour and wireless data can be transferred to your device so you can use it hands-free.

Easy and simple to use – clear display

Speed results are not always consistent

SKLZ Bullet Ball Speed Detection Training Ball

This innovative yet stylish design offers the chance to measure the speed without using radar guns. The ball itself is a radar ball, so as athletes hit it, the radar ball will record the velocity speed per hour, and can measure the speed up to 120 MPH.

The distances on this speed gun can be adjusted from 46″ to 60.6″, and requires a replaceable LR-41 mercury battery (which is included). This design stands out from the rest due to the radar being incorporated within the ball itself, which makes it super extremely easy to use – all you have to do is throw it.

Extremely budget-friendly radar ball

Can measure speed up to 120 MPH

The speed-accuracy isn’t always consistent

Pocket Radar Smart Coach/Bluetooth App

For the ultimate easy to use best radar gun, the Pocket Radar Smart Coach covers everything a parent or coach needs – plus being able to view, record, and store readings on your mobile phone mean it’s never been easier to integrate technology into basketball practice. There’s even a setting to announce recordings via speaker so results are always accessible.

The Smart Coach Radar speed gun uses AAA batteries but also accepts rechargeable batteries, and offers accurate speed readings whilst also being small and convenient to carry around. In addition, this radar gun can be used to record auto-edited videos that can be shared with others (via text or social media) with just the tap of a button.

Speed readings can be stored on your smartphone

Affordably priced speed gun

Smart Coach Radar uses a durable design

Connectivity with the app can be intermittent so it’s advised to connect before practice

Stalker Radar Pro II Baseball Radar Speed Gun

The Stalker Radar Pro II is the ideal baseball radar gun, with an impressive speed range of 1-890 MPH. Wireless connectivity makes this radar gun for sports easy to use for baseball coaches and parents alike.

In addition, this speed radar gun uses rechargeable Li-Ion batteries and comes with a battery charger as well as a solid, protective carrying case. The materials used are durable and long-lasting, so this speed gun can be used in all weather conditions.

Speed gun works with rechargeable batteries

Factors to Consider Before Purchasing a Radar Gun

Being clear on what specifically you need from a speed gun for baseball will save you time and money, and you’ll be able to look for the best radar gun to suit your needs.

There are plenty of factors to think about, such as the price, portability, and accuracy. Here are some tips to get you started:

Your Present Level

If you’re a coach, the level of your players will be a big factor when choosing a radar gun for softball or baseball. Factors like the velocity speed range and distance will vary on whether you coach high school level or little league baseball.

One of the main benefits of using a speed gun is being able to give feedback in the moment – the more you can do this with young or older athletes, the quicker they’ll be able to improve their speed velocity.

Budget

How much is a radar gun? The price varies massively, but if you want to buy the best baseball radar gun, you should be prepared at least $100-$200. A cheap radar gun for baseball will still offer some benefits but might lack in accuracy and durability.

For those on a very tight budget, you might prefer to opt for a used radar gun, but be aware of any wear or tear that comes from an overused cheap baseball radar gun.

Read Reviews About a Baseball Radar Gun

When it comes to buying the best baseball radar gun, you don’t want to waste time testing out lots of different brands until you find the right speed gun, and that’s where reading baseball radar gun reviews can save you a lot of time.

In addition, a baseball radar gun review will break down all the features and requirements of each speed gun so you can clearly make a choice based on your budget and needs.

Check This Out!

Tips for Using a Baseball Radar Gun

To make sure you get the most out of your radar gun for baseball, follow these tips below.

Some, like using a stand for your radar gun is optional and come down to personal preference and budget, whereas knowing how to position yourself correctly will make using the radar gun much easier.

Position Yourself in an Open Space

To achieve the best results from your radar gun, it’s essential to have direct contact with the pitcher. Removing any obstacles that could slow down the accuracy is also a good idea to put any bags or extra equipment out of the way.

You should point the gun so that it’s directly facing the oncoming ball, or is placed directly behind the outgoing ball for the most accurate readings – to make it easier to imagine, draw an invisible straight line from the pitcher to the gun.

Buy a Stand or a Gorilla-stand

Using your radar gun by hand is still an effective option if you don’t have a stand, but investing in one will make your life much easier, plus you can buy a decent stand or gorilla stand for your radar gun for less than $50.

Record all the Results

There’s little point in using a baseball radar gun unless you actually record all the results down. The aim is for you to then be able to monitor and make improvements to the player’s performance and their velocity speed when hitting the ball (which can be hard to mentally keep count of).

On the other hand, though, it’s always useful to provide instant feedback to players so they can make improvements there and then instead of implementing new techniques or styles later once the results have all been recorded.

Compare Results

Once you’ve got a series of readings from your radar gun, it’s a good idea to sit down and go over the results. This is the best way to highlight any strengths and to work on any weaknesses the athlete has when it comes to technique and speed.

Trying Baseball Radar Gun

FAQs

How accurate are baseball radar guns?

Overall, baseball radar guns are very accurate when measuring velocity speed per hour, with the most expensive being able to measure up to 1 mph. Even less expensive radar guns will offer high accuracy levels, but they may vary +/- 1 mph.

Do baseball radar guns work on cars?

Yes, most baseball radar guns will work for other purposes, such as measuring the speed of a vehicle or any other moving object. The key is to be able to place the gun facing parallel to the vehicle, so positioning is essential for an accurate reading.

What does a radar gun measure?

In baseball, a radar gun will measure the speed of the ball, and this allows coaches and parents to monitor their athletes’ performance and their velocity speed and make improvements to technique or speed where needed.

Can radar guns be used at night?

Although a police radar gun is equipped to function at night and in very low light, baseball radar guns don’t yet have this function. It’s hoped that this function will be incorporated soon so athletes can practice whenever it suits them.

Conclusion

Baseball athletes can benefit massively from having their speed recorded and reviewed regularly, so don’t overlook a speed gun as an essential training tool.

The best radar gun for baseball needs to be easy to use, precise in measurements, and consistent in readings – so ensure that your radar for baseball includes these key elements.

Finally, it will come down to your budget, personal preference, and whether you need extra features like hands-free or Bluetooth included in your radar gun.

Updated on 07-21-21

Pocket Radar – Ball Coach Review

The ability of a speed radar to capture an exact ball speed reading is critical in sport.

In baseball, it can be “make or break”.

Pitching speed is one of the most desirable aspects in baseball, so it’s essential that aspiring players keep accurate data of their progress if they’re serious about improving.

In the context of tennis, serve speed is extremely important and having an accurate speed radar will allow recreational and professional players alike to measure their improvements.

I’m actually very excited to bring you this review. When searching for a speed radar for my own game I had to go through an awful lot of junk before I found “the one”, not to mention my burnt wallet!

Not to sound big-headed or anything, but I wish I had had access to the information in this article at the start of my research process.

But hey! I hope you benefit from it!

What Does the Pocket Radar Ball Coach Promise?

Contrary to many cheap, popular speed radars out there, the Ball Coach promises an accurate reading of actual ball exit speed.

The reason this promise is so meaningful is that capturing ball exit speed is extremely difficult.

Most speed radars like the SpeedTrac X or the even cheaper Supido sports radar can only pick up the ball speed as it approaches the device.

Due to air resistance, the ball has already slowed down and has lost a lot of its initial velocity.

Therefore, the speed these devices display are consistently slow, inaccurate readings of the true velocity.

At Wimbledon, the Hawk Eye System uses cameras to track ball speed right off the racket head.

Unfortunately, the rest of us don’t have access to a million-dollar radar system!

What’s interesting though, is the Ball Coach device promises the same quality of reading that a professional radar gun would give, but for a fraction of the price…

That’s not to say the Ball Coach isn’t a professional-level radar gun – it is!

It’s just the best value for money we’ve ever seen for one of these radars so it’s easy to forget that it’s also in this upper level of class.

The Pocket Radar Ball Coach is extremely well priced and affordable. It’s also extremely easy to use.

A surprisingly small device, (the company’s name, Pocket Radar, really is fitting!) it is extremely portable and adaptable for a variety of situations.

To clock the serve speed in tennis, the Ball Coach can be used in hands on (partner holding the device) or hands-free (mounted on tripod) environments.

The device should be positioned behind or in front of the server and at the height and angle of ball contact to get the most accurate readings.

It measures speed ranging from 25-130mph in either mph or kph, has an automatic and manual mode, and has a memory recall feature so you can review your last collection of 25 serves.

Additionally, it works within a 120 feet range, is powered by 2 AAA Batteries and comes with a 2-year warranty, such is the quality of the product.

Did the Ball Coach Deliver on its Promise? How Accurate Was It?

I still remember my first experience with the Ball Coach extremely vividly.

I was quite simply blown away…

Having tested some of the seriously expensive speed radars out there, like PlaySight and an ATP level Radar at a Challenger Tour event, I found it difficult to believe that Pocket Radar’s Ball Coach lined up almost exactly with these readings!

In order to get these results without camera tracking, the technology must be extremely sophisticated.

I actually spoke to the product owner a little while ago and he informed me that the device is able to differentiate between ball exit speed and racket head speed.

Too often, speed radars frustratingly pick up the speed of the swinging racket (which is always slower) as opposed to the ball speed.

If we looked at that example in baseball, a cheap radar might pick up your body movements before you release the ball. Imagine how frustrating this is – or maybe you’ve experienced it first-hand!

You have no need to worry with the Ball Coach.

The only reading you will receive is that of the actual ball exit speed.

I say “actual” as you will receive the true reading before the ball has started to slow due to air resistance, as we previously discussed.

I hope you’re excited!

You can get access to this product for just the price of a birthday present or Christmas gift.

It represents enormous value for money and is at the absolute pinnacle of affordable professional speed radars out there right now.

On some of the ATP level radars I have tested, I’m normally over 120mph for my fastest serves for the day and I was delighted to experience the same readings with the Ball Coach.

The only downside is that you must get the radar to line up exactly with the flightpath or direction of your shot in order to get the most accurate reading, so it’s important to find a target and stick to it.

In tennis, this is sometimes a little tricky, as aiming that precisely is quite difficult.

In baseball this is much less of an issue, however. I hate to use the word “issue” as someone people may misinterpret that as a problem.

It definitely isn’t! It’s just something to be aware of during your experience when using the device.

All radars that aren’t camera-based use a laser beam, so always try to keep everything as lined up as possible to get the best results.

Pocket Radar – Ball Coach Conclusion

In our opinion at TheTennisBros. com, Pocket Radar’s Ball Coach is one of the best speed radars out there.

When you consider how cheaply priced the product is for the incredible quality you receive, I’d even go as far to say that it offers the best combination of price and quality out of any sports radar in the world.

I don’t often give 9/10s in my reviews.

In fact, a 9/10 would probably be more like 9.5/10 or a 10/10 for some of the other reviewers (Will and Lawrence) on this site.

I tend to mark a little harder! In this case, I had no hesitation rating the Ball Coach so high as it is a superb product in all aspects.

You may want to check out some of our other speed radar reviews, so you can see how the ball coach compares.

We’ve reviewed pretty much all the mainstream brand radars and the Ball Coach absolutely came out on top.

It can incredibly frustrating and honestly, a little depressive to see such a low, inaccurately slow reading come up on some of the cheaper, less sensitive and quite frankly, inferior radars out there.

As I touched upon earlier, the ball slows down a lot after its initial exit from the racket in tennis or the bat in baseball due to air resistance.

In tennis, a “Pistol” Pete Sampras serve that left the racket at 130mph would only be travelling around 70 mph by the time it reached the opposite baseline.

Even in the initial couple of feet from the racket, the ball would have already slowed an awful lot!

However, the Ball Coach does have that ability to read the initial exit speed and fastest, true velocity.

It made me feel elated and excited about the prospect of measuring my improvement.

Knowing I was getting a true reading of my ball speed really motivated me to get out there and practice to try and better my mph.

You really must get out there and try this one!

Get the Pocket Radar – Ball Coach on Amazon Today!

Buy Now!

Pocket Radar’s speed-tracking devices help athletes track pitching and hitting velocity

Pocket Radar co-founders Chris Stewart, Steve Goody and Grant Moulton wax nostalgic when they recall their early days as young Hewlett Packard engineers.

It’s like they’re speaking of a long-forgotten era when everyone had their own workbenches with unlimited access to electronics testing equipment and resources. Budding inventors could consult with technology gurus.

It was a culture they said was fueled by creativity first and rewarded by money later. That was before the dominance of venture capital and exit strategies. And that’s exactly the business environment the three veteran tech inventors sought to foster when they started their Santa Rosa tech company.

“This is all about building the right environment, where creative people can thrive,” said Stewart, Pocket Radar’s president and chief operating officer.

The company, which celebrates its ?10th anniversary this year, designs and makes small and affordable radar devices primarily for athletes and coaches who want to capture the real-time speed of baseball pitches and hits, tennis serves, race cars, remote-controlled cars – anything that moves fast.

The company’s newest model, the Smart Coach, syncs with smartphones via Bluetooth, allowing the user to embed speed readings directly onto mobile videos taken of a baseball pitch or bat swing.

A simple search of #pocketradar on Instagram, Facebook and Twitter brings up athletes of all ages, from backyard hopefuls to professionals, sharing their speed results.

In late June, New England Patriots quarterback Tom Brady used Pocket Radar’s Ball Coach to send a message to ESPN commentator Max Kellerman, who had notoriously claimed the 6-time Super Bowl champion was “falling off a cliff.”

Brady posted to Instagram a screenshot of the Ball Coach with the radar display showing 61 mph, for the speed he can still throw a football.

While speed-tracking devices like the popular Stalker Pro 2 radar gun still are widely used by Major League Baseball scouts, Pocket Radar has become a smaller, more discreet alternative. It’s a favorite of high school and little league sports coaches who use the speed readings as training reinforcement and feedback, a way to show young athletes that proper physical adjustments can yield positive results.

“Every extra 1 mile per hour is equal to approximately 5 feet of distance on a well-launched ball,” said Goody, the company’s CEO.

Though Stewart has been an inventor since his youth, he honed his business skills at Agilent Technologies, where he was business manager of the company’s radio test business. He also held a series of leadership roles in research and development at Hewlett Packard and its Agilent spinoff in Santa Rosa.

Stewart is now a volunteer instructor at Sonoma State University and last year became the entrepreneur in residence for SSU’s school of economics. Stewart said his work with Sonoma State is his way of giving back and nurturing young inventors.

“We’re looking to build a culture of long-term innovation for the local area,” Stewart said.

Moulton, Pocket Radar’s chief technical officer, joined Hewlett Packard right out of college and several years later hired Stewart and brought him into his engineering group. Moulton later left HP and joined Next Level Communications, where he worked on high-speed optical and digital communications leading a team of several engineers.

It was at Next Level when Moulton met Goody. When the latter went to work for Cerent, Moulton followed but kept in touch with Stewart.

The three remained Sonoma County friends, meeting weekly for several years, plotting their next move. During that time, they toyed with a number of inventions and designs before they decided to innovate the radar gun. The primary consideration, they said, was choosing a product that could not be easily copied by global tech companies with far more resources.

“We intentionally chose the radar (gun) because it was much harder to build,” Moulton said.

The conventional radar gun’s technology is based on the doppler effect, bouncing microwaves radiation off moving objects to calculate speed. Moulton, who designed all of Pocket Radar’s electronics boards, said making the radar gun smaller was the first big task.

The design team ultimately reduced the devices main circuitry to the size and thickness of a credit card.

The end result was the Pocket Radar Classic model, a multiple purpose speed tracker launched in 2010 for $199. At the time, most radar guns cost up to $1,000.

After the Classic model was launched and its technology refined, the team spent more than a year researching specific needs of college and professional baseball coaches to determine their specific needs.

They did the same with traffic engineering professionals, developing a Pocket Radar iteration for those focused on road safety.

All the recent research has led them to exploring myriad ways their product can be used. One that is of particular interest is helping to reduce sports-related injuries.

For a pitcher, fatigue is often an early indicator of injury, while a drop in speed is often an early indicator of fatigue, Goody said. Coaches can closely monitor pitching speed with an eye on noticeable declines.

Going forward, the Pocket Radar team says they are focused on continuing to build their brand in the sports arena.

“The overall sports tech industry is growing like crazy right now and we are focused on making high value technology available to the broad market at an affordable cost,” Stewart said.

Stewart declined to discuss specific products being planned for the future, but he said the company has big plans for expanding its software capabilities.

It’s been a rapid pace of growth for the enterprise. The company has launched eight products in 8 years, all the while growing the customer base. A decade after the firm’s launch, many local schools now have one of its radar guns for use by sports coaches.

“In the last 10 years, we’ve rapidly democratized the radar gun, we made it accessible to the masses,” Stewart said.

You can reach Staff Writer Martin Espinoza at 707-521-5213 or [email protected] On Twitter @pressreno.

90,000 Be smart & amp; Install a pocket radar for added security Inspiring Driving Experience

Product & Supplier Information:

 Unlike previous use.  Pocket Radar  has increased these days and people always find it necessary to install it in their car. Taking a safety risk is never the best option, and it is more dangerous when data is not available after an incident.  There are several types you can choose from on Alibaba.com.  pocket radar that helps you meet your security standards and makes data available whenever you need it.  Pocket Radar  equips your vehicle with its own data processing system, making it smarter. The 
 pocket radar and its benefits cannot be overstated and it will always be wise for you to research the various products available to find out what works best for your vehicle.  Pocket Radar  is a smart device that can work over Wi-Fi and can also work with GPS.You can come up.  pocket radar  anywhere in your car, although best on the dashboard. Choose from a variety of options that work best. 
 
 pocket radars are available in several sizes and each one has its own characteristics. A category of devices such as.   pocket radar broadcasts all the activities in the car live, and can also help you in such cases as parking, cruising the car and, most importantly, provide you with all the data about what happened during the accident.  Pocket Radar  can also track anything with its GPS system. 
 
 Worries about price are gone as you can choose from a wide range.  pocket radar . meets your requirements and availability. Buy them while you can for some interesting deals. Get them now 
 

radar – from Russian to all languages ​​

RADAR – Pour les articles homonymes, voir Radar (homonymie). Cette antenne radar longue portée, connue sous le nom ALTAIR, est utilisée pour détecter et pister les objets spatiaux … Wikipédia en Français

RADAR – On désigne sous le nom de radar (RAdio Detection And Ranging) un système qui illumine une portion de l’espace avec une onde électromagnétique et reçoit les ondes réfléchies par les objets qui s’y troumet de détecter leur…… Encyclopédie Universelle

RADAR – ist die Abkürzung für Radio Detection and Ranging (frei übersetzt: “Funkortung und abstandsmessung”), ursprünglich Radio Aircraft Detection and Ranging (frei übersetzt: “Funkbas und Deutsch” Flux.

RaDAR – ist die Abkürzung für Radio Detection and Ranging (frei übersetzt: “Funkortung und abstandsmessung”), ursprünglich Radio Aircraft Detection and Ranging (frei übersetzt: “Funkbas und Deutsch” Fluxesmessung… und Bendik ist ungsortung)

Radar – ist die Abkürzung für Radio Detection and Ranging (frei übersetzt: “Funkortung und abstandsmessung”), ursprünglich Radio Aircraft Detection and Ranging (frei übersetzt: “funkbasierte Deutschme …

Radar – “Radar” Britney Spears’ single from Circus Released … Wikipedia

radar – RADÁR, radare, s.n. Aparat care emite unde electromagnetice şi apoi le recepţionează, după ce au fost reflectate de un obiect, folosit pentru a detecta şi a localiza un obiect prin măsurarea timpului trecut între emisia şi recepţia undelor. ♦…… Dicționar Român

radar – ra‧dar [ˈreɪdɑ ǁ dɑːr] noun [uncountable] 1. be off / below the radar (screen) used when saying that people do not know about or are not thinking about something, especially something that will later become important: • Many of these technologies … Financial and business terms

Radar – Smn erw.fach. (20. Jh.) Entlehnung. Entlehnt aus ne. radar, einem Initialwort aus ne. Radio Detecting And Ranging. Ebenso nndl. radar, ne. radar, nfrz. radar, nschw. radar, nisl. radar; Radius. ✎ DF 3 (1977), 109; Rey Debove / Gagnon (1988),…… Etymologisches Wörterbuch der deutschen sprache

Radar 3D – Saltar a navegación, búsqueda Un radar 3D es un radar que proporciona cobertura en las tres dimensiones. La mayor parte de los radares son bidimensionales, es decir, funcionan en distancia y acimut.Los radares tridimensionales proporcionan…… Wikipedia Español

radar – rȁdār m DEFINICIJA 1.tehn. sprava koja odašilje i prima elektromagnetske valove i omogućuje da se odredi smjer i udaljenost nekog objekta na zemlji, u zraku ili u vodi [navigacijski radar; meteorološki radar; nišanski radar] 2. sport bilješke o…… Hrvatski jezični portal

90,000 Program where traffic cops are

Where is the traffic police

Where is the traffic police is a useful software tool for drivers.The software is a special radar that determines the current location of traffic police posts and patrol cars in real time. The program is an irreplaceable assistant for any motorist. Thanks to Where traffic police, you can avoid unpleasant situations and less often receive fines from traffic police officers.

Pocket radar and great functionality

The software base of the application is equipped with a large filing cabinet. Built-in maps take into account and mark on the screen the current traffic police posts, radars. Also, the program can record and show the accidents that have occurred.This allows the driver to view the application map and avoid potential hazards in advance. The only drawback of the database is that the map does not record the locations of road works and speed bumps. And the radar does not detect speed cameras. Library Where the traffic police are constantly filled with users. The driver has the right to enter his information on the map and report a real danger. The entered data is checked for compliance with reality.

There is a useful alert feature in the settings.The program will automatically warn you about approaching the danger zone. To do this, you need to set the area scan coverage in the parameters. Too large a radius will intensively spend mobile traffic to work. It is advisable to set the optimal test range to save money and battery of the device.

Additional information

Where the traffic police is a mobile analogue of modern navigators and has similar functionality. Installing the software makes sense only in the absence of a navigator.

Features

• Regularly updated database;
• Large filing cabinet;
• Radar determines on the map the current traffic police posts, radars and road accidents, taking into account the location of the driver;
• Scanner does not include speed cameras, road works and speed bumps;
• Ability to independently enter information about real dangers and threats on the road;
• The entered data is being verified;
• Smart early warning system for approaching dangerous areas;
• Personal configuration of software and scanner coverage radius;
• Nice and accessible application interface;
• Compatible with old and new versions of the Android operating system;
• Where the GAI contains software purchases inside;
• The application is available completely free of charge.

Comments (0)

Where is the traffic police – online map of traffic police and radars (antiradar)

Our application shows in real time where traffic police posts and radars are! It’s completely free. This is a kind of free radar detector (antiradar in the common people). We do not call to violate traffic rules, but on the contrary, we want to reduce such violations and save you from unnecessary traffic police fines. After all, if the driver knows that there is a traffic police post in front, he will not violate traffic rules on this site.

The program works thanks to information from ordinary people who mark traffic police posts and radars on the map.Therefore, if you suddenly pass or pass by such a checkpoint, mark them on the map and help other drivers avoid traffic violations.

– Bug fixed on Android 9

• Police Speed ​​& Traffic Camera Radar & Detector

  to detect threats on the road. Such as speed police, camera, Speed, working etc.

• Police Detector (Speed ​​Camera Radar)

  Police Detector – mark the location of speed cameras and police on the map

• Waze – GPS, Maps, Traffic Alerts & Live Navigation

  Save time on every drive.Waze tells you about traffic, police, crashes & more

• Speed ​​Camera Detector – Police Radar Alerts App

  Speed ​​Camera Detector is free & accurate speed trap, Police Radar detector app.

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  Inform and find out about objects on road – Police, heavy traffic, raids, etc …

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  Free Speed ​​Camera Detector …100% Legal and Reliable. Never pay another fine!

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  Enjoy relaxed driving with timely alerts for all types of Traffic jams & Cameras

• Speed ​​Cameras & Traffic Sygic

  Speed ​​Cameras by Sygic with speed camera alerts, traffic, and speed limits.

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  Detect speed cameras, police radar & cops while driving with speed camera radar

• Police Radar Speed ​​Camera Detector: All countries

  Speed ​​Radar Camera Detector Pro USA All countries Free Without net

• Police Roadblock Radar – Simulator

  Speed ​​Camera Detector est un détecteur de radars Simple et GRATUIT

• Traffic police officer traffic cop simulator 2018

  Play the best traffic police officer cop game of 2018

Where is the traffic police – online map of traffic police, Radars and Cameras app app for android: where to download, description, rating and reviews 90 100

Developer: GKeyCategory: Maps and navigationApplication average rating: 4.5Number of ratings: 5,987Price: 0Application site:

Where traffic police application is an online map of traffic police, radars and cameras from GKey on Android from the developer GKey.

Loading. User reviews. More than 5,987 downloads

Download on Google Play

Application description

Loading …

• Step 1. You need to create a Google account
• Step 2. You need to log in to your new account
• Step 3. Go to the page Google Play applications for Android phones
• Step 4. Read the terms and press “Install”.

Content For Sale: None Updated: October 4, 2017Age limit: 3+ Number of installations: 500,000–1,000,000 Current version: 3.0 Required Android version: 4.0 or later Interactive elements: no Ad presence: yes

Download on Google Play

What’s new in latest versions

– Fixed bugs

Author: Maria Makarova User Rating: 4 out of 5 Feedback: Guys, I can’t add information. I don’t know what the reason is. I installed the application a couple of days ago. A post was formed in my area, everyone is being slowed down, I wanted to warn the others who drive the same way as I do without insurance, but it didn’t work. I press the button and nothing.How to do it? It would also be cool if the app could mark the patrol. That is, not the place where the inspectors stand, but the area where they roam. Author: User Rating: 5 out of 5 Review: Frankly !!! Class application !!! Well done !!!! There is one drawback (but this is not your fault) – there are not many users yet))) but I will advise my friends to increase the number of people. Everything is simple and convenient !!!! It is easy to add a mark – untie the map from its position and by pressing and holding on the screen literally 2 seconds – a menu will pop up for marking.Thanks to those who came up with it !! Well done !!! And the fact that someone does not show … I don’t know, guys. Belarus, highways, small towns – everything shows well !! Author: User rating: 3 out of 5 There is little information from this. It is still not worth storing information about temporary ambushes for more than a day. The app has been showing for as long as a week. Author: Roman Khomenko User Rating: 5 out of 5 Review: An excellent application, but uninformative from its own obscurity. In this regard, I use another very famous service (they also have a search engine and taxi)))))Z2 Ekaterinburg application does not work. The point can hang for several hours of gayts there is no longer I can not remove the point))) why does it hang for how many hours there? Author: Aleksandr Sygakov It all worked. After the update, the button stopped working. Top right corner ‘go to location’ The program has all permissions. But it doesn’t scale or move behind my location. And so the necessary application.

Download on Google Play

Contacts

E-mail: [email protected] Address: Republic of Belarus

No comments

The application will show all traffic police ambushes online

Every action sooner or later comes up against.Currently, a smartphone application is being tested, using it correctly, you can see all the “ambushes” of the traffic police. Is this really possible? After all, the traffic cops hiding somewhere around the bend, and even in the bushes, are invisible to us for the time being. We usually find out about them when it’s too late. We’re driving – everything is fine, and suddenly they materialize. And our radar detectors do not always help, because they recognize “invisibles” only if they have a radar that determines the speed.

Still, long range ambush detection is no longer a fantasy.Technology is developing, and in general, the twenty-first century is in the yard. More recently, mobile phones resembled irons, and now they are comparable in shape and intelligence to the smartest devices on the planet. What are the applications alone, of which there are no longer counting. And then another one comes out – from Google and Russian developers. Its principle of operation is such that it can detect almost any patrol car.

So-called neural networks have been created specifically for this application.Artificial “brains” interact with smartphone cameras, which begin to work as video recorders, recording everything that enters the lens. DPS vehicles will be recognized, and their location and license plate will immediately appear in Google Navigator.

More details about the principles of the system will probably become known at the end of 2018, when the application will be available to everyone.

Text: Alexander Valentinov Photo: Internet resources

90,000 Radars.Hitler’s secret weapon. 1933-1945

Radars

Freya

By 1940 Germany had eight operational Freya early warning radar stations. They were significantly outnumbered by the technically less advanced British radars, and more importantly, they never formed a single and truly effective early detection system. However, the Freya radars laid the foundation for the development and construction of the much larger and more powerful early warning radars Mammut (Mammoth) and Wasserman (Water), which entered service in 1942.The effective range of the “Mammut” was about 320 kilometers, while the “Wasserman” was able to detect the formation of allied bombers at a distance of up to 240 kilometers.

Würzburg and Giant Würzburg “Würzburg” and its variants were improved guidance radars, which began to enter service in 1941, often along with anti-aircraft installations. From 1940 to 1945, nearly four thousand Würzburgs of various models were produced.

Jagdschloss (Hunting Lodge)

Although Freya and its variations were quite effective radars, the Allies quickly learned to jam them with the Windows (Window) system.It was just a bundle of strips of aluminum foil that Allied bombers dropped at regular intervals. These strips were cut to match the operating frequencies of known German radars, causing them to cause powerful and repetitive radio echoes on the radar screens that drowned out weaker aircraft returns. This principle is still used in modern military aviation, but is now known by the term “dipole reflector”.The Jagdschloss, which entered service in 1944, operated at a frequency immune to Windou’s interference and was an effective early warning radar with an operating range of up to 120 kilometers.

Liechtenstein B / S

This was the first active German radar, which was equipped with night fighters (mainly “Me 110” and “Ju 88”) since the spring of 1942. Its maximum range was 4 kilometers, but it was vulnerable to the Windou jamming system.

Liechtenstein SN-2

Fortunately for the Luftwaffe night fighters, as soon as Allied bombers began using the Windo system in the summer of 1943, German designers proposed an improved version of the radar, the Liechtenstein SN-2.This device operated at a different frequency and was able to break through the interference created by the Windo, to which in mid-1944 the Allies responded with the new Rope (Kanat) system, which replaced the Windo.

new generation pocket dosimeter Atom Fast / Habr

Hello geektimes. As a person who is fond of all sorts of gadgets, I certainly have a dosimeter at home. Not for reasons of radiophobia, but solely as an interesting physical device that can measure something.For a long time there was an idea to try new dosimeters – scintillation, but the main thing that stopped was the price. Finally, on New Year’s Eve, the time, the availability of money and free time coincided, and as a result, Santa Claus, represented by a postal employee, brought me a small souvenir and an Atom Fast dosimeter.

How it works, see details under cat.

Theory

Conventional dosimeters, known in everyday life as

Geiger counters

, have the same counter inside – a tube with a rarefied gas.Gas breaks through during the flight of a particle, the electronic circuit records a single pulse. How it looks can be seen in the

review of the SOEKS

dosimeter, where 2 Geiger counters installed on the board are clearly visible:

By counting the number of pulses per minute, you can calculate the background radiation.

Everything would be fine, but such meters have a problem: not very high efficiency. They register not so many pulses, so the counting time is rather long (about a minute).That is why, by the way, in the photo above you can see 2 detectors, and some dosimeters are equipped with 4.

And now we come to the point – scintillation detectors. Unlike a Geiger counter, a scintillator is a crystal that can glow when a particle passes through (more on Wikipedia). By connecting such a crystal with a sensitive photodetector, you can get the same dosimeter, only much more compact and sensitive. According to the manufacturer, the sensitivity of the scintillation detector is 20 times higher than that of the Geiger counter.This means that if an ordinary dosimeter takes about a minute to count the background, the scintillation dosimeter will record it in just 3 seconds. The difference is really colossal, which makes it possible to use such detectors for searching, such as the classic Lidlum in the photo:

Such dosimeters used photomultipliers to amplify the signal from the crystal, which determined both the price and the size. Modern technologies make it possible to reduce the size so that the scintillation dosimeter can be placed even in a wristwatch case.Alas, this is still too expensive (the issue price is about $ 1000), so the hero of our review is a little larger, although it is still very compact – the Atom Fast pocket bluetooth dosimeter.

Practice

Hard

The Atom Fast dosimeter is shaped like a pocket flashlight – but without any buttons or screens. Data is transmitted via Bluetooth LE, judging by the instructions, the operating time in this mode is about 2 months, which is more than enough. However, in addition to Bluetooth, the dosimeter also has a built-in “buzzer”, which makes it possible to use it autonomously (thresholds are set via a smartphone).You can turn off the wireless connection and just carry the dosimeter in your pocket as an alarm, the operating time will be up to 4 months.

The “heart” of the dosimeter is a scintillation crystal:

It is sealed in an opaque foil and connected to a solid-state photomultiplier, in the case it is placed like this:

(photo courtesy of the developers of the device)

The dosimeter itself, with used with Sony Z3 Compact smartphone:

Soft

The main window of the program is the measurement mode. The dosimeter counts really quickly – it was enough to attach it to the kitchen sink, a slight excess of the background is immediately visible on the screen.

A second useful function is the archiving of all measurements. For example, a graph for a day – the dosimeter was just in my pocket.

It is clearly seen that in the office (from 9 to 17) the average radiation level is noticeably lower than at home in the apartment. The reason is probably in various building materials, however, the excess is insignificant.

Finally, a very interesting mode is a map with overlaid readings. The fast measurement time of the dosimeter, together with the presence of gps in the smartphone, allows you to display data in the form of a map, which can be very interesting.

On the map below, you can clearly see a slight local background elevation where the street intersects with the expressway.

Probably, sand for sprinkling roads has a slightly increased background, and part of it spills out from the road. Moreover, the dosimeter was simply in my pocket, no special “measures” were taken to search, the measurement speed is sufficient even to record changes in the background just while walking.A conventional dosimeter with a Geiger counter would simply not notice such a small excess.

Warning mode

Of course, no one will constantly look at the smartphone screen. The dosimeter has a built-in piezodynamic speaker and a vibration motor to warn about an increase in background. Through the software, you can set the trigger thresholds, and a sound and vibration signal can also be triggered in the smartphone itself.

It is worth repeating that in the signaling mode Atom Fast works autonomously, it is not necessary to have a smartphone with you.

Conclusions

The device can certainly be attributed to the top class of dosimeters, both in terms of functions and, alas, in terms of price. At the time of this writing, the cost of Atom Fast from the version with the most sensitive crystal is 16500r. The version with a smaller crystal will cost 12,500 rubles.

Advantages of the device:

– compactness
– long battery life
– invisible appearance and communication range via Bluetooth up to 5-6 meters
– background recording of all readings with the possibility of further analysis

Now about the cons.It makes no sense to talk about the price, it is clear that good equipment cannot be cheap. The main disadvantage is rather the absence of at least some kind of screen. It is not very convenient to constantly take out a smartphone, and a small LCD indicator, like in a watch, would not greatly increase the cost, but it would significantly increase the usability of the device. Perhaps, if we slightly modify the device in terms of usability – add a screen, an on-off button (nevertheless, a dosimeter is not needed every day) and change the non-standard charging connector to a regular micro usb – it would be a hit in its price category, well and so, the device gets a solid and well-deserved mark “4+”.

PS: Instead of completion, the answer to the question “why is this necessary.” Fortunately, the average person does not need a dosimeter every day. At the same time, the device can definitely be of interest to those who travel a lot, who live in places with possible pollution (as a relatively recent case, you can recall the city of Elektrostal), who come across old electronic equipment (scales with SPD are not uncommon). The device can be useful for quick analysis of building materials, rare commission items, and so on.And finally, for those who are simply interested in something new and unusual – the sensitive radiation sensor allows you to look at the world around you from a different angle. Almost everywhere – at home, on the street, in the subway, radiation levels are very different, and it is very interesting to find a physical explanation for this.

Pocket oscilloscope up to 1 MHz

Replacing the PIC16F873A microcontroller with the PIC18F4550 [2, 3] in the pocket oscilloscope described in [1], and the K140UD608 operational amplifier with the TDA8708A analog video interface microcircuit [4], the sweep duration was reduced by a factor , up to 21 μs on the entire screen width, and increase the maximum input signal frequency to 1 MHz. This has greatly expanded the scope of the oscilloscope.

Main technical characteristics

Beam deflection voltage across the entire screen height, V ……………. 0.2; 1; 3; ten; thirty; 100

Maximum frequency of the investigated signal, MHz …….. 1

Duration of horizontal sweep, μs ……. 21, 170, 1000, 10-103, 30-103, 100-103, 300-103, 106

Screen resolution, pixels …… 128×64

Supply voltage, V ………… 5

Current consumption, mA……….. 115

Dimensions, mm ………….. 80x62x30

Weight, g ………….. ………. 110

The oscilloscope circuit is shown in Fig. 1. The input signal goes to pin 20 (ADCIN – ADC input) of the DA1 chip (TDA8708A). To start its ADC, the DD1 microcontroller generates clock pulses at pin 17. Binary codes of signal readings are fed to port B of the microcontroller DD1, which, according to the program, writes them into the RAM, and then displays them on the graphic LCD HG1 in the form of an oscillogram. General description of LCD MT-12864J-2FLA can be found in [5], and about its use read in [6].

Fig. 1. Schematic of the oscilloscope

In fig. 2 shows an oscillogram of a signal with a frequency of 100 kHz. The variable resistor R6 is used to shift the vertical sweep line, setting it to the most convenient position for observing the oscillogram. The selection of resistor R12 achieves the best contrast of the image on the LCD screen.

Fig. 2. Oscillogram of a signal with a frequency of 100 kHz

The oscilloscope sweep operates in a single trigger mode by pressing the SB1 button.Pressing the SB2 button, change the duration of the sweep. After each pressing of this button, the value of the new sweep duration is displayed on the screen for a while (Fig. 3).

Fig. 3. The value of the new sweep duration

The microcontroller program can be downloaded here.

Literature

1. Pichugov A. Pocket oscillograph.- Radio, 2013, No. 10, p. 20, 21.

2.PIC18F2455 / 2550/4455/4550 Data Sheet. – URL: http: //ww1.microchip.com / downloads / en / DeviceDoc / 39632e.pdf (04.22.15).

3. Yatsenkov V. S. Microchip microcontrollers with hardware support for USB. – M .: Radio and communication, 2008.

4. TDA8708A. Video analog input interface. – URL: http://doc.chipfind.ru/pdf/philips/tda 8708a.pdf (05/21/15).

5. Liquid crystal module MT-12864J. – URL: http://www.melt.com.ru/ files / file2150172.5.pdf (22.04.15).

6. Milevsky A. Using the MT-12864A graphic LCD with a Microchip microcontroller.- Radio, 2009, No. 6, p. 28-31.

Author: A. PICHUGOV, p. the village of Vargashi, Kurgan region

Call of Duty Warzone Personal Radar: Why You Hear \

(Image Credit: Activision)

You are probably wondering what Call of Duty Warzone Personal Radar is if you came to this guide because the Personal Airborne Radar voice line has been popping up a lot since the recent update. The point is, you cannot get personal radars in the Call of Duty combat zone.Personal radar kill streak is exclusive to Call of Duty Modern Warfare multiplayer, so when you hear there is a personal radar in the war zone, what does that mean? Here’s a weird personal radar issue in Call of Duty Warzone.

What is Call of Duty Warzone Personal Radar?

(Image credit: Activision)

If the radar’s personal kill strip is not really in the combat zone, what does that mean? There is no official announcement from Activision or Infinity Ward yet, but the general consensus is that the Personal Radar voice line actually refers to the Recon Drone.The Recon Drone is a gear that you can find in caches all over the map, and it is remotely controlled by the player to spot enemies and tag them for your teammates.

Some players have speculated that the personal airborne radar line actually refers to enemy drones, but this does not seem to be the case. UAVs have a completely different dialogue and you can test this theory if one of your teammates is using the Recon Drone. When they do this, it should say “friendly personal airborne radar” and not “enemy personal radar” when the other team deploys it….

Case settled! This is all there is in this secret. Perhaps Infinity Ward accidentally mixed up the voice lines somewhere and this will be fixed soon, or perhaps it is deliberately misleading people. In any case, Personal Radar simply refers to the Recon Drone.

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